Has anyone in space seen or photographed a simple laser pointer from Earth?Can Astronauts really see firework displays from space?What is the highest frequency at which Earth is, or has been, observed from space?Why doesn't Rayleigh Scattering obstruct Earth from space?Are there ANY verified satellite images of visible light coherent backscattering from Earth?Has anyone seen an actual spectrum of a satellite made by an amateur photographer?Is this the only eclipse where Moon's shadow on the Earth (umbra) has been photographed by a person in space?Has the Moon's shadow on the Earth (solar eclipse umbra) ever been photographed from beyond Earth orbit?What caused this bright light from the ground at night seen from the ISS?Has a lander/rover ever examined or photographed another mission?What is this huge, red, blinking light structure on Earth seen from the ISS in this video?Why does the Earth's atmosphere as seen from space have the colors that it does?

What specific instant in time in the MCU has been depicted the most times?

Integer Lists of Noah

Why is the air gap between the stator and rotor on a motor kept as small as it is?

Fast validation of time windows in a routing problem

Is there any reason why MCU changed the Snap to Blip

How to trigger Authentification of Named Credential created via Apex

How can I truly shut down ssh server?

Swapping "Good" and "Bad"

Are there any sports for which the world's best player is female?

Why was hardware diversification an asset for the IBM PC ecosystem?

Indesign - how to change the style of the page numbers?

Managing and organizing the massively increased number of classes after switching to SOLID?

OR-backed serious games

How can characters/players identify that a polymorphed dragon is a dragon?

Why would non-kinetic weapons be used for orbital bombardment?

Why is the ladder of the LM always in the dark side of the LM?

Is it OK to leave real names & info visible in business card portfolio?

Civic overheating and hoses popping

Why doesn't sea level show seasonality?

How do native German speakers usually express skepticism (using even) about a premise?

When an electron changes its spin, or any other intrinsic property, is it still the same electron?

Optimization terminology: "Exact" v. "Approximate"

Is "De qui parles-tu" (for example) as formal as it is in English, or is it normal for the French to casually say that

Why are they 'nude photos'?



Has anyone in space seen or photographed a simple laser pointer from Earth?


Can Astronauts really see firework displays from space?What is the highest frequency at which Earth is, or has been, observed from space?Why doesn't Rayleigh Scattering obstruct Earth from space?Are there ANY verified satellite images of visible light coherent backscattering from Earth?Has anyone seen an actual spectrum of a satellite made by an amateur photographer?Is this the only eclipse where Moon's shadow on the Earth (umbra) has been photographed by a person in space?Has the Moon's shadow on the Earth (solar eclipse umbra) ever been photographed from beyond Earth orbit?What caused this bright light from the ground at night seen from the ISS?Has a lander/rover ever examined or photographed another mission?What is this huge, red, blinking light structure on Earth seen from the ISS in this video?Why does the Earth's atmosphere as seen from space have the colors that it does?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








6












$begingroup$


In the question How to make a green LED as visually bright as a 0 magnitude star? I worked out that a 100 mA green LED with a 10° half-angle 18 kilometers away would be as bright as a 0th magnitude star. So a 5 mW laser pointer with a miliradian divergence could potentially be seen even farther away, or at least photographed.



Question: Has anyone in space seen or photographed a laser pointer from Earth?



Note I'm asking about a laser pointer, not some high-powered laser used to bounce off of the Moon, or a powerful searchlight. Something that you can hold in your hand.










share|improve this question











$endgroup$







  • 1




    $begingroup$
    pbs.twimg.com/media/AocWtTtCMAEjFpt.jpg:large was the one I was talking about he mentioned in his talk, they also pointed a searchlight at the ISS. I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not. This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend himself. Here's the tweet: twitter.com/astro_Pettit/status/182139277566685184
    $endgroup$
    – Magic Octopus Urn
    8 hours ago







  • 1




    $begingroup$
    Also, the one Tristan mentioned, here's the tweet for that one yes, the blue dot is the light-source :).
    $endgroup$
    – Magic Octopus Urn
    8 hours ago










  • $begingroup$
    @MagicOctopusUrn These would be great posted in an answer, just copy/paste!
    $endgroup$
    – uhoh
    8 hours ago

















6












$begingroup$


In the question How to make a green LED as visually bright as a 0 magnitude star? I worked out that a 100 mA green LED with a 10° half-angle 18 kilometers away would be as bright as a 0th magnitude star. So a 5 mW laser pointer with a miliradian divergence could potentially be seen even farther away, or at least photographed.



Question: Has anyone in space seen or photographed a laser pointer from Earth?



Note I'm asking about a laser pointer, not some high-powered laser used to bounce off of the Moon, or a powerful searchlight. Something that you can hold in your hand.










share|improve this question











$endgroup$







  • 1




    $begingroup$
    pbs.twimg.com/media/AocWtTtCMAEjFpt.jpg:large was the one I was talking about he mentioned in his talk, they also pointed a searchlight at the ISS. I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not. This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend himself. Here's the tweet: twitter.com/astro_Pettit/status/182139277566685184
    $endgroup$
    – Magic Octopus Urn
    8 hours ago







  • 1




    $begingroup$
    Also, the one Tristan mentioned, here's the tweet for that one yes, the blue dot is the light-source :).
    $endgroup$
    – Magic Octopus Urn
    8 hours ago










  • $begingroup$
    @MagicOctopusUrn These would be great posted in an answer, just copy/paste!
    $endgroup$
    – uhoh
    8 hours ago













6












6








6


1



$begingroup$


In the question How to make a green LED as visually bright as a 0 magnitude star? I worked out that a 100 mA green LED with a 10° half-angle 18 kilometers away would be as bright as a 0th magnitude star. So a 5 mW laser pointer with a miliradian divergence could potentially be seen even farther away, or at least photographed.



Question: Has anyone in space seen or photographed a laser pointer from Earth?



Note I'm asking about a laser pointer, not some high-powered laser used to bounce off of the Moon, or a powerful searchlight. Something that you can hold in your hand.










share|improve this question











$endgroup$




In the question How to make a green LED as visually bright as a 0 magnitude star? I worked out that a 100 mA green LED with a 10° half-angle 18 kilometers away would be as bright as a 0th magnitude star. So a 5 mW laser pointer with a miliradian divergence could potentially be seen even farther away, or at least photographed.



Question: Has anyone in space seen or photographed a laser pointer from Earth?



Note I'm asking about a laser pointer, not some high-powered laser used to bounce off of the Moon, or a powerful searchlight. Something that you can hold in your hand.







photography earth-observation






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 1 hour ago







uhoh

















asked 9 hours ago









uhohuhoh

45.8k22 gold badges182 silver badges601 bronze badges




45.8k22 gold badges182 silver badges601 bronze badges







  • 1




    $begingroup$
    pbs.twimg.com/media/AocWtTtCMAEjFpt.jpg:large was the one I was talking about he mentioned in his talk, they also pointed a searchlight at the ISS. I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not. This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend himself. Here's the tweet: twitter.com/astro_Pettit/status/182139277566685184
    $endgroup$
    – Magic Octopus Urn
    8 hours ago







  • 1




    $begingroup$
    Also, the one Tristan mentioned, here's the tweet for that one yes, the blue dot is the light-source :).
    $endgroup$
    – Magic Octopus Urn
    8 hours ago










  • $begingroup$
    @MagicOctopusUrn These would be great posted in an answer, just copy/paste!
    $endgroup$
    – uhoh
    8 hours ago












  • 1




    $begingroup$
    pbs.twimg.com/media/AocWtTtCMAEjFpt.jpg:large was the one I was talking about he mentioned in his talk, they also pointed a searchlight at the ISS. I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not. This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend himself. Here's the tweet: twitter.com/astro_Pettit/status/182139277566685184
    $endgroup$
    – Magic Octopus Urn
    8 hours ago







  • 1




    $begingroup$
    Also, the one Tristan mentioned, here's the tweet for that one yes, the blue dot is the light-source :).
    $endgroup$
    – Magic Octopus Urn
    8 hours ago










  • $begingroup$
    @MagicOctopusUrn These would be great posted in an answer, just copy/paste!
    $endgroup$
    – uhoh
    8 hours ago







1




1




$begingroup$
pbs.twimg.com/media/AocWtTtCMAEjFpt.jpg:large was the one I was talking about he mentioned in his talk, they also pointed a searchlight at the ISS. I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not. This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend himself. Here's the tweet: twitter.com/astro_Pettit/status/182139277566685184
$endgroup$
– Magic Octopus Urn
8 hours ago





$begingroup$
pbs.twimg.com/media/AocWtTtCMAEjFpt.jpg:large was the one I was talking about he mentioned in his talk, they also pointed a searchlight at the ISS. I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not. This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend himself. Here's the tweet: twitter.com/astro_Pettit/status/182139277566685184
$endgroup$
– Magic Octopus Urn
8 hours ago





1




1




$begingroup$
Also, the one Tristan mentioned, here's the tweet for that one yes, the blue dot is the light-source :).
$endgroup$
– Magic Octopus Urn
8 hours ago




$begingroup$
Also, the one Tristan mentioned, here's the tweet for that one yes, the blue dot is the light-source :).
$endgroup$
– Magic Octopus Urn
8 hours ago












$begingroup$
@MagicOctopusUrn These would be great posted in an answer, just copy/paste!
$endgroup$
– uhoh
8 hours ago




$begingroup$
@MagicOctopusUrn These would be great posted in an answer, just copy/paste!
$endgroup$
– uhoh
8 hours ago










2 Answers
2






active

oldest

votes


















7












$begingroup$

Don Pettit mentioned a an experiment set up with the San Antonio Astronomical Scociety who pointed both spotlights and a blue laser pointer at the ISS, pictured below in a 5-10 second exposure:



enter image description here



I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not (with the aperture used). This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend who wanted to test a theory.




In addition to this, a picture of what the laser from the incident on March 4, 2012 can be seen in this tweet, also by Don Pettit, as Tristan previously mentioned, and would look approximately like this:



enter image description here



If you like cool, seemingly odd, but ultimately insightful experiments I highly suggest looking through his tweets and clicking into his blogs. He does many random experiments which have garnered him scientific patents and entries in research papers.




Quotes from an airspace article:




Early Sunday morning, at 01:27 our time, the San Antonio Astronomical Association, an amateur astronomy group, succeeded in flashing the space station with a one-watt blue laser and a white spotlight as we passed overhead. This took a number of engineering calculations. Projected beam diameters (assuming the propagation of a Gaussian wave for the laser) and intensity at the target had to be calculated. Tracking space station’s path as it streaked across the sky was another challenge. I used email to communicate with Robert Reeves, one of the association’s members. Considering that it takes a day, maybe more, for a simple exchange of messages (on space station we receive email drops two to three times a day), the whole event took weeks to plan.




Another photo of the light, from this source (I am unsure if they are the same image):



enter image description here



Note: This is all paraphrased from a talk he gave at NEAIC, so if it's wrong please correct me.






share|improve this answer











$endgroup$








  • 1




    $begingroup$
    This is cool and new to me. Pettit was (is) quite a character.
    $endgroup$
    – Organic Marble
    5 hours ago






  • 1




    $begingroup$
    @OrganicMarble did you see his space-cup ;)?
    $endgroup$
    – Magic Octopus Urn
    5 hours ago






  • 1




    $begingroup$
    When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
    $endgroup$
    – Organic Marble
    5 hours ago










  • $begingroup$
    @organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
    $endgroup$
    – Magic Octopus Urn
    5 hours ago


















4












$begingroup$

This has happened at least once, on March 4, 2012, there was an experiment to do just that.



YouTube: ISS FLASH PROJECT (lower your volume first)






share|improve this answer











$endgroup$












  • $begingroup$
    "This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
    $endgroup$
    – uhoh
    8 hours ago














Your Answer








StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "508"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);













draft saved

draft discarded


















StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fspace.stackexchange.com%2fquestions%2f37213%2fhas-anyone-in-space-seen-or-photographed-a-simple-laser-pointer-from-earth%23new-answer', 'question_page');

);

Post as a guest















Required, but never shown

























2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes









7












$begingroup$

Don Pettit mentioned a an experiment set up with the San Antonio Astronomical Scociety who pointed both spotlights and a blue laser pointer at the ISS, pictured below in a 5-10 second exposure:



enter image description here



I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not (with the aperture used). This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend who wanted to test a theory.




In addition to this, a picture of what the laser from the incident on March 4, 2012 can be seen in this tweet, also by Don Pettit, as Tristan previously mentioned, and would look approximately like this:



enter image description here



If you like cool, seemingly odd, but ultimately insightful experiments I highly suggest looking through his tweets and clicking into his blogs. He does many random experiments which have garnered him scientific patents and entries in research papers.




Quotes from an airspace article:




Early Sunday morning, at 01:27 our time, the San Antonio Astronomical Association, an amateur astronomy group, succeeded in flashing the space station with a one-watt blue laser and a white spotlight as we passed overhead. This took a number of engineering calculations. Projected beam diameters (assuming the propagation of a Gaussian wave for the laser) and intensity at the target had to be calculated. Tracking space station’s path as it streaked across the sky was another challenge. I used email to communicate with Robert Reeves, one of the association’s members. Considering that it takes a day, maybe more, for a simple exchange of messages (on space station we receive email drops two to three times a day), the whole event took weeks to plan.




Another photo of the light, from this source (I am unsure if they are the same image):



enter image description here



Note: This is all paraphrased from a talk he gave at NEAIC, so if it's wrong please correct me.






share|improve this answer











$endgroup$








  • 1




    $begingroup$
    This is cool and new to me. Pettit was (is) quite a character.
    $endgroup$
    – Organic Marble
    5 hours ago






  • 1




    $begingroup$
    @OrganicMarble did you see his space-cup ;)?
    $endgroup$
    – Magic Octopus Urn
    5 hours ago






  • 1




    $begingroup$
    When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
    $endgroup$
    – Organic Marble
    5 hours ago










  • $begingroup$
    @organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
    $endgroup$
    – Magic Octopus Urn
    5 hours ago















7












$begingroup$

Don Pettit mentioned a an experiment set up with the San Antonio Astronomical Scociety who pointed both spotlights and a blue laser pointer at the ISS, pictured below in a 5-10 second exposure:



enter image description here



I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not (with the aperture used). This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend who wanted to test a theory.




In addition to this, a picture of what the laser from the incident on March 4, 2012 can be seen in this tweet, also by Don Pettit, as Tristan previously mentioned, and would look approximately like this:



enter image description here



If you like cool, seemingly odd, but ultimately insightful experiments I highly suggest looking through his tweets and clicking into his blogs. He does many random experiments which have garnered him scientific patents and entries in research papers.




Quotes from an airspace article:




Early Sunday morning, at 01:27 our time, the San Antonio Astronomical Association, an amateur astronomy group, succeeded in flashing the space station with a one-watt blue laser and a white spotlight as we passed overhead. This took a number of engineering calculations. Projected beam diameters (assuming the propagation of a Gaussian wave for the laser) and intensity at the target had to be calculated. Tracking space station’s path as it streaked across the sky was another challenge. I used email to communicate with Robert Reeves, one of the association’s members. Considering that it takes a day, maybe more, for a simple exchange of messages (on space station we receive email drops two to three times a day), the whole event took weeks to plan.




Another photo of the light, from this source (I am unsure if they are the same image):



enter image description here



Note: This is all paraphrased from a talk he gave at NEAIC, so if it's wrong please correct me.






share|improve this answer











$endgroup$








  • 1




    $begingroup$
    This is cool and new to me. Pettit was (is) quite a character.
    $endgroup$
    – Organic Marble
    5 hours ago






  • 1




    $begingroup$
    @OrganicMarble did you see his space-cup ;)?
    $endgroup$
    – Magic Octopus Urn
    5 hours ago






  • 1




    $begingroup$
    When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
    $endgroup$
    – Organic Marble
    5 hours ago










  • $begingroup$
    @organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
    $endgroup$
    – Magic Octopus Urn
    5 hours ago













7












7








7





$begingroup$

Don Pettit mentioned a an experiment set up with the San Antonio Astronomical Scociety who pointed both spotlights and a blue laser pointer at the ISS, pictured below in a 5-10 second exposure:



enter image description here



I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not (with the aperture used). This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend who wanted to test a theory.




In addition to this, a picture of what the laser from the incident on March 4, 2012 can be seen in this tweet, also by Don Pettit, as Tristan previously mentioned, and would look approximately like this:



enter image description here



If you like cool, seemingly odd, but ultimately insightful experiments I highly suggest looking through his tweets and clicking into his blogs. He does many random experiments which have garnered him scientific patents and entries in research papers.




Quotes from an airspace article:




Early Sunday morning, at 01:27 our time, the San Antonio Astronomical Association, an amateur astronomy group, succeeded in flashing the space station with a one-watt blue laser and a white spotlight as we passed overhead. This took a number of engineering calculations. Projected beam diameters (assuming the propagation of a Gaussian wave for the laser) and intensity at the target had to be calculated. Tracking space station’s path as it streaked across the sky was another challenge. I used email to communicate with Robert Reeves, one of the association’s members. Considering that it takes a day, maybe more, for a simple exchange of messages (on space station we receive email drops two to three times a day), the whole event took weeks to plan.




Another photo of the light, from this source (I am unsure if they are the same image):



enter image description here



Note: This is all paraphrased from a talk he gave at NEAIC, so if it's wrong please correct me.






share|improve this answer











$endgroup$



Don Pettit mentioned a an experiment set up with the San Antonio Astronomical Scociety who pointed both spotlights and a blue laser pointer at the ISS, pictured below in a 5-10 second exposure:



enter image description here



I believe, but don't quote me on this, that the laser pointer was seen while the spotlight was not (with the aperture used). This is a picture from the ground, probably a short exposure (seeing the trail on the ISS). This was not an official experiment, rather one he set up with a friend who wanted to test a theory.




In addition to this, a picture of what the laser from the incident on March 4, 2012 can be seen in this tweet, also by Don Pettit, as Tristan previously mentioned, and would look approximately like this:



enter image description here



If you like cool, seemingly odd, but ultimately insightful experiments I highly suggest looking through his tweets and clicking into his blogs. He does many random experiments which have garnered him scientific patents and entries in research papers.




Quotes from an airspace article:




Early Sunday morning, at 01:27 our time, the San Antonio Astronomical Association, an amateur astronomy group, succeeded in flashing the space station with a one-watt blue laser and a white spotlight as we passed overhead. This took a number of engineering calculations. Projected beam diameters (assuming the propagation of a Gaussian wave for the laser) and intensity at the target had to be calculated. Tracking space station’s path as it streaked across the sky was another challenge. I used email to communicate with Robert Reeves, one of the association’s members. Considering that it takes a day, maybe more, for a simple exchange of messages (on space station we receive email drops two to three times a day), the whole event took weeks to plan.




Another photo of the light, from this source (I am unsure if they are the same image):



enter image description here



Note: This is all paraphrased from a talk he gave at NEAIC, so if it's wrong please correct me.







share|improve this answer














share|improve this answer



share|improve this answer








edited 5 hours ago

























answered 8 hours ago









Magic Octopus UrnMagic Octopus Urn

3,7321 gold badge15 silver badges52 bronze badges




3,7321 gold badge15 silver badges52 bronze badges







  • 1




    $begingroup$
    This is cool and new to me. Pettit was (is) quite a character.
    $endgroup$
    – Organic Marble
    5 hours ago






  • 1




    $begingroup$
    @OrganicMarble did you see his space-cup ;)?
    $endgroup$
    – Magic Octopus Urn
    5 hours ago






  • 1




    $begingroup$
    When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
    $endgroup$
    – Organic Marble
    5 hours ago










  • $begingroup$
    @organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
    $endgroup$
    – Magic Octopus Urn
    5 hours ago












  • 1




    $begingroup$
    This is cool and new to me. Pettit was (is) quite a character.
    $endgroup$
    – Organic Marble
    5 hours ago






  • 1




    $begingroup$
    @OrganicMarble did you see his space-cup ;)?
    $endgroup$
    – Magic Octopus Urn
    5 hours ago






  • 1




    $begingroup$
    When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
    $endgroup$
    – Organic Marble
    5 hours ago










  • $begingroup$
    @organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
    $endgroup$
    – Magic Octopus Urn
    5 hours ago







1




1




$begingroup$
This is cool and new to me. Pettit was (is) quite a character.
$endgroup$
– Organic Marble
5 hours ago




$begingroup$
This is cool and new to me. Pettit was (is) quite a character.
$endgroup$
– Organic Marble
5 hours ago




1




1




$begingroup$
@OrganicMarble did you see his space-cup ;)?
$endgroup$
– Magic Octopus Urn
5 hours ago




$begingroup$
@OrganicMarble did you see his space-cup ;)?
$endgroup$
– Magic Octopus Urn
5 hours ago




1




1




$begingroup$
When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
$endgroup$
– Organic Marble
5 hours ago




$begingroup$
When getting briefed on the Orbiter fuel cell system, he told us that liquid oxygen is light blue in color, and he knows because he had some in his garage.
$endgroup$
– Organic Marble
5 hours ago












$begingroup$
@organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
$endgroup$
– Magic Octopus Urn
5 hours ago




$begingroup$
@organicmarble That's hilarious! Did he just keep it on hand? I wonder how much it costs to sustain -300F for periods of time in a garage.
$endgroup$
– Magic Octopus Urn
5 hours ago













4












$begingroup$

This has happened at least once, on March 4, 2012, there was an experiment to do just that.



YouTube: ISS FLASH PROJECT (lower your volume first)






share|improve this answer











$endgroup$












  • $begingroup$
    "This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
    $endgroup$
    – uhoh
    8 hours ago
















4












$begingroup$

This has happened at least once, on March 4, 2012, there was an experiment to do just that.



YouTube: ISS FLASH PROJECT (lower your volume first)






share|improve this answer











$endgroup$












  • $begingroup$
    "This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
    $endgroup$
    – uhoh
    8 hours ago














4












4








4





$begingroup$

This has happened at least once, on March 4, 2012, there was an experiment to do just that.



YouTube: ISS FLASH PROJECT (lower your volume first)






share|improve this answer











$endgroup$



This has happened at least once, on March 4, 2012, there was an experiment to do just that.



YouTube: ISS FLASH PROJECT (lower your volume first)







share|improve this answer














share|improve this answer



share|improve this answer








edited 8 hours ago









uhoh

45.8k22 gold badges182 silver badges601 bronze badges




45.8k22 gold badges182 silver badges601 bronze badges










answered 8 hours ago









TristanTristan

11.7k1 gold badge38 silver badges59 bronze badges




11.7k1 gold badge38 silver badges59 bronze badges











  • $begingroup$
    "This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
    $endgroup$
    – uhoh
    8 hours ago

















  • $begingroup$
    "This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
    $endgroup$
    – uhoh
    8 hours ago
















$begingroup$
"This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
$endgroup$
– uhoh
8 hours ago





$begingroup$
"This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark." Quite the steady hand! update: Annotation in the video says the laser is mounted on a telescope.
$endgroup$
– uhoh
8 hours ago


















draft saved

draft discarded
















































Thanks for contributing an answer to Space Exploration Stack Exchange!


  • Please be sure to answer the question. Provide details and share your research!

But avoid


  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.

Use MathJax to format equations. MathJax reference.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fspace.stackexchange.com%2fquestions%2f37213%2fhas-anyone-in-space-seen-or-photographed-a-simple-laser-pointer-from-earth%23new-answer', 'question_page');

);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Invision Community Contents History See also References External links Navigation menuProprietaryinvisioncommunity.comIPS Community ForumsIPS Community Forumsthis blog entry"License Changes, IP.Board 3.4, and the Future""Interview -- Matt Mecham of Ibforums""CEO Invision Power Board, Matt Mecham Is a Liar, Thief!"IPB License Explanation 1.3, 1.3.1, 2.0, and 2.1ArchivedSecurity Fixes, Updates And Enhancements For IPB 1.3.1Archived"New Demo Accounts - Invision Power Services"the original"New Default Skin"the original"Invision Power Board 3.0.0 and Applications Released"the original"Archived copy"the original"Perpetual licenses being done away with""Release Notes - Invision Power Services""Introducing: IPS Community Suite 4!"Invision Community Release Notes

Canceling a color specificationRandomly assigning color to Graphics3D objects?Default color for Filling in Mathematica 9Coloring specific elements of sets with a prime modified order in an array plotHow to pick a color differing significantly from the colors already in a given color list?Detection of the text colorColor numbers based on their valueCan color schemes for use with ColorData include opacity specification?My dynamic color schemes

Tom Holland Mục lục Đầu đời và giáo dục | Sự nghiệp | Cuộc sống cá nhân | Phim tham gia | Giải thưởng và đề cử | Chú thích | Liên kết ngoài | Trình đơn chuyển hướngProfile“Person Details for Thomas Stanley Holland, "England and Wales Birth Registration Index, 1837-2008" — FamilySearch.org”"Meet Tom Holland... the 16-year-old star of The Impossible""Schoolboy actor Tom Holland finds himself in Oscar contention for role in tsunami drama"“Naomi Watts on the Prince William and Harry's reaction to her film about the late Princess Diana”lưu trữ"Holland and Pflueger Are West End's Two New 'Billy Elliots'""I'm so envious of my son, the movie star! British writer Dominic Holland's spent 20 years trying to crack Hollywood - but he's been beaten to it by a very unlikely rival"“Richard and Margaret Povey of Jersey, Channel Islands, UK: Information about Thomas Stanley Holland”"Tom Holland to play Billy Elliot""New Billy Elliot leaving the garage"Billy Elliot the Musical - Tom Holland - Billy"A Tale of four Billys: Tom Holland""The Feel Good Factor""Thames Christian College schoolboys join Myleene Klass for The Feelgood Factor""Government launches £600,000 arts bursaries pilot""BILLY's Chapman, Holland, Gardner & Jackson-Keen Visit Prime Minister""Elton John 'blown away' by Billy Elliot fifth birthday" (video with John's interview and fragments of Holland's performance)"First News interviews Arrietty's Tom Holland"“33rd Critics' Circle Film Awards winners”“National Board of Review Current Awards”Bản gốc"Ron Howard Whaling Tale 'In The Heart Of The Sea' Casts Tom Holland"“'Spider-Man' Finds Tom Holland to Star as New Web-Slinger”lưu trữ“Captain America: Civil War (2016)”“Film Review: ‘Captain America: Civil War’”lưu trữ“‘Captain America: Civil War’ review: Choose your own avenger”lưu trữ“The Lost City of Z reviews”“Sony Pictures and Marvel Studios Find Their 'Spider-Man' Star and Director”“‘Mary Magdalene’, ‘Current War’ & ‘Wind River’ Get 2017 Release Dates From Weinstein”“Lionsgate Unleashing Daisy Ridley & Tom Holland Starrer ‘Chaos Walking’ In Cannes”“PTA's 'Master' Leads Chicago Film Critics Nominations, UPDATED: Houston and Indiana Critics Nominations”“Nominaciones Goya 2013 Telecinco Cinema – ENG”“Jameson Empire Film Awards: Martin Freeman wins best actor for performance in The Hobbit”“34th Annual Young Artist Awards”Bản gốc“Teen Choice Awards 2016—Captain America: Civil War Leads Second Wave of Nominations”“BAFTA Film Award Nominations: ‘La La Land’ Leads Race”“Saturn Awards Nominations 2017: 'Rogue One,' 'Walking Dead' Lead”Tom HollandTom HollandTom HollandTom Hollandmedia.gettyimages.comWorldCat Identities300279794no20130442900000 0004 0355 42791085670554170004732cb16706349t(data)XX5557367