Dark side of an exoplanet - if it was earth-like would its surface light be detectable?What stage of development are meteorology models of Venus?What causes the costs of operating an existing planetary mission?Is there a map or list of all the lava tube skylights the LRO has detected on the Moon?When did Kepler roll over and how does it match the anomalies of KIC 8462852?Where do ice giants contain ice?Why do (did) they think WT1190F is low density?Recommended source for familiarizing oneself with the applications of spectroscopy in planetary science
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Dark side of an exoplanet - if it was earth-like would its surface light be detectable?
What stage of development are meteorology models of Venus?What causes the costs of operating an existing planetary mission?Is there a map or list of all the lava tube skylights the LRO has detected on the Moon?When did Kepler roll over and how does it match the anomalies of KIC 8462852?Where do ice giants contain ice?Why do (did) they think WT1190F is low density?Recommended source for familiarizing oneself with the applications of spectroscopy in planetary science
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
$begingroup$
The Kepler telescope looks at dark sides of exoplanets.
If the exoplanet was earth-like would it not have emitted light? Would those lights be detectable, or what technological advances would be required to see them?
planetary-science
edited 6 hours ago
CourageousPotato
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asked 8 hours ago
Robert m GilmoreRobert m Gilmore
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Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
The Kepler telescope looks at dark sides of exoplanets.
If the exoplanet was earth-like would it not have emitted light? Would those lights be detectable, or what technological advances would be required to see them?
planetary-science
edited 6 hours ago
CourageousPotato
1,2431 silver badge10 bronze badges
asked 8 hours ago
Robert m GilmoreRobert m Gilmore
191 bronze badge
New contributor
Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
1
$begingroup$
The Earth is dark on the dark side, except where there is human activity. We’ve never seen a planet with any life on it at all, much less life that’s in the business of creating powerful illumination.
$endgroup$
– Jacob Krall
8 hours ago
$begingroup$
Do you mean "if it was like Earth" in that it was inhabited, or "Earth-like"? We can see light pollution from space, but that will also depend on how much light is being emitted
$endgroup$
– Punintended
8 hours ago
4
$begingroup$
Are you asking about artificial lights on an extrasolar planet?
$endgroup$
– Organic Marble
8 hours ago
1
$begingroup$
We have difficulty enough seeing exoplanets to begin with. Asking for the dark side where artificial lighting would be far dimmer than what gets reflected in the daytime seems a bit much for me. And if Earth were any indication, radio detection would be an excellent alternative for detecting an advanced civilization.
$endgroup$
– Oscar Lanzi
7 hours ago
add a comment |
$begingroup$
The Kepler telescope looks at dark sides of exoplanets.
If the exoplanet was earth-like would it not have emitted light? Would those lights be detectable, or what technological advances would be required to see them?
planetary-science
edited 6 hours ago
CourageousPotato
1,2431 silver badge10 bronze badges
asked 8 hours ago
Robert m GilmoreRobert m Gilmore
191 bronze badge
New contributor
Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
The Kepler telescope looks at dark sides of exoplanets.
If the exoplanet was earth-like would it not have emitted light? Would those lights be detectable, or what technological advances would be required to see them?
planetary-science
planetary-science
edited 6 hours ago
CourageousPotato
1,2431 silver badge10 bronze badges
asked 8 hours ago
Robert m GilmoreRobert m Gilmore
191 bronze badge
New contributor
Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 6 hours ago
CourageousPotato
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asked 8 hours ago
Robert m GilmoreRobert m Gilmore
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New contributor
Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 6 hours ago
CourageousPotato
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edited 6 hours ago
CourageousPotato
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edited 6 hours ago
CourageousPotato
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1,2431 silver badge10 bronze badges
asked 8 hours ago
Robert m GilmoreRobert m Gilmore
191 bronze badge
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Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 8 hours ago
Robert m GilmoreRobert m Gilmore
191 bronze badge
asked 8 hours ago
Robert m GilmoreRobert m Gilmore
191 bronze badge
191 bronze badge
New contributor
Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Robert m Gilmore is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
$begingroup$
The Earth is dark on the dark side, except where there is human activity. We’ve never seen a planet with any life on it at all, much less life that’s in the business of creating powerful illumination.
$endgroup$
– Jacob Krall
8 hours ago
$begingroup$
Do you mean "if it was like Earth" in that it was inhabited, or "Earth-like"? We can see light pollution from space, but that will also depend on how much light is being emitted
$endgroup$
– Punintended
8 hours ago
4
$begingroup$
Are you asking about artificial lights on an extrasolar planet?
$endgroup$
– Organic Marble
8 hours ago
1
$begingroup$
We have difficulty enough seeing exoplanets to begin with. Asking for the dark side where artificial lighting would be far dimmer than what gets reflected in the daytime seems a bit much for me. And if Earth were any indication, radio detection would be an excellent alternative for detecting an advanced civilization.
$endgroup$
– Oscar Lanzi
7 hours ago
add a comment |
1
$begingroup$
The Earth is dark on the dark side, except where there is human activity. We’ve never seen a planet with any life on it at all, much less life that’s in the business of creating powerful illumination.
$endgroup$
– Jacob Krall
8 hours ago
$begingroup$
Do you mean "if it was like Earth" in that it was inhabited, or "Earth-like"? We can see light pollution from space, but that will also depend on how much light is being emitted
$endgroup$
– Punintended
8 hours ago
4
$begingroup$
Are you asking about artificial lights on an extrasolar planet?
$endgroup$
– Organic Marble
8 hours ago
1
$begingroup$
We have difficulty enough seeing exoplanets to begin with. Asking for the dark side where artificial lighting would be far dimmer than what gets reflected in the daytime seems a bit much for me. And if Earth were any indication, radio detection would be an excellent alternative for detecting an advanced civilization.
$endgroup$
– Oscar Lanzi
7 hours ago
1
1
$begingroup$
The Earth is dark on the dark side, except where there is human activity. We’ve never seen a planet with any life on it at all, much less life that’s in the business of creating powerful illumination.
$endgroup$
– Jacob Krall
8 hours ago
$begingroup$
The Earth is dark on the dark side, except where there is human activity. We’ve never seen a planet with any life on it at all, much less life that’s in the business of creating powerful illumination.
$endgroup$
– Jacob Krall
8 hours ago
$begingroup$
Do you mean "if it was like Earth" in that it was inhabited, or "Earth-like"? We can see light pollution from space, but that will also depend on how much light is being emitted
$endgroup$
– Punintended
8 hours ago
$begingroup$
Do you mean "if it was like Earth" in that it was inhabited, or "Earth-like"? We can see light pollution from space, but that will also depend on how much light is being emitted
$endgroup$
– Punintended
8 hours ago
4
4
$begingroup$
Are you asking about artificial lights on an extrasolar planet?
$endgroup$
– Organic Marble
8 hours ago
$begingroup$
Are you asking about artificial lights on an extrasolar planet?
$endgroup$
– Organic Marble
8 hours ago
1
1
$begingroup$
We have difficulty enough seeing exoplanets to begin with. Asking for the dark side where artificial lighting would be far dimmer than what gets reflected in the daytime seems a bit much for me. And if Earth were any indication, radio detection would be an excellent alternative for detecting an advanced civilization.
$endgroup$
– Oscar Lanzi
7 hours ago
$begingroup$
We have difficulty enough seeing exoplanets to begin with. Asking for the dark side where artificial lighting would be far dimmer than what gets reflected in the daytime seems a bit much for me. And if Earth were any indication, radio detection would be an excellent alternative for detecting an advanced civilization.
$endgroup$
– Oscar Lanzi
7 hours ago
add a comment |
3 Answers
3
active
oldest
votes
$begingroup$
Keep in mind that earth like exoplanets are mostly found as they cross in front of their sun.
If you hold a flashlight between you and the sun, you would not be able to tell if it was on or off, because the sun is so bright. The same would apply to city lights on an exoplanet.
Even if the explanet is partly around the sun, it is so far away from us, that it's sun would make city lights on the exoplanet not visible to us.
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
$endgroup$
add a comment |
$begingroup$
Exoplanets are found in a variety of ways. Two rather common ways are star transits and radial velocity changes.
Star transits are found by continuously measuring the brightness of the Star, and looking for dips that resemble a planet blocking out a portion of the solid angle.
Radial Velocity Changes detection works by finding small redshift/blueshifts in the star’s color. These are from planet(s) gravity pulling the star as they orbit, which changes its radial velocity relative to earth in a predictable manner.
From the precise magnitudes and timings of these events, many parameters like planet radius, orbital period, and (inferred) mass are known. If both transits and radial velocity changes are detected for the same star system, there may be enough data to tell if there is a significant light emission coming from the “dark side” of the planet. This would likely need to be much brighter than Earth city lights to be detectable. Think Death Star lazer in terms of necessary power.
Resources:
Exoplanet Archive
Detection Types
answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
$endgroup$
add a comment |
$begingroup$
City lights are not detectable today, but it is possible in the future. It would require:
future generations of telescopes on the ground and in space that would have the capacity to detect phase modulation due to very strong artificial illumination on the nightside of planets as they orbit their parent stars.
-- "Detection Technique for Artificially Illuminated Objects in the Outer Solar System and Beyond" - A. Loeb, E. Turner
See also: My answer to "How would we detect an Earth doppelganger planet?" at Astronomy Stack Exchange
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
$endgroup$
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
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active
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$begingroup$
Keep in mind that earth like exoplanets are mostly found as they cross in front of their sun.
If you hold a flashlight between you and the sun, you would not be able to tell if it was on or off, because the sun is so bright. The same would apply to city lights on an exoplanet.
Even if the explanet is partly around the sun, it is so far away from us, that it's sun would make city lights on the exoplanet not visible to us.
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
$endgroup$
add a comment |
$begingroup$
Keep in mind that earth like exoplanets are mostly found as they cross in front of their sun.
If you hold a flashlight between you and the sun, you would not be able to tell if it was on or off, because the sun is so bright. The same would apply to city lights on an exoplanet.
Even if the explanet is partly around the sun, it is so far away from us, that it's sun would make city lights on the exoplanet not visible to us.
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
$endgroup$
add a comment |
$begingroup$
Keep in mind that earth like exoplanets are mostly found as they cross in front of their sun.
If you hold a flashlight between you and the sun, you would not be able to tell if it was on or off, because the sun is so bright. The same would apply to city lights on an exoplanet.
Even if the explanet is partly around the sun, it is so far away from us, that it's sun would make city lights on the exoplanet not visible to us.
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
$endgroup$
Keep in mind that earth like exoplanets are mostly found as they cross in front of their sun.
If you hold a flashlight between you and the sun, you would not be able to tell if it was on or off, because the sun is so bright. The same would apply to city lights on an exoplanet.
Even if the explanet is partly around the sun, it is so far away from us, that it's sun would make city lights on the exoplanet not visible to us.
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
answered 7 hours ago
James JenkinsJames Jenkins
12.9k15 gold badges78 silver badges203 bronze badges
12.9k15 gold badges78 silver badges203 bronze badges
add a comment |
add a comment |
$begingroup$
Exoplanets are found in a variety of ways. Two rather common ways are star transits and radial velocity changes.
Star transits are found by continuously measuring the brightness of the Star, and looking for dips that resemble a planet blocking out a portion of the solid angle.
Radial Velocity Changes detection works by finding small redshift/blueshifts in the star’s color. These are from planet(s) gravity pulling the star as they orbit, which changes its radial velocity relative to earth in a predictable manner.
From the precise magnitudes and timings of these events, many parameters like planet radius, orbital period, and (inferred) mass are known. If both transits and radial velocity changes are detected for the same star system, there may be enough data to tell if there is a significant light emission coming from the “dark side” of the planet. This would likely need to be much brighter than Earth city lights to be detectable. Think Death Star lazer in terms of necessary power.
Resources:
Exoplanet Archive
Detection Types
answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
$endgroup$
add a comment |
$begingroup$
Exoplanets are found in a variety of ways. Two rather common ways are star transits and radial velocity changes.
Star transits are found by continuously measuring the brightness of the Star, and looking for dips that resemble a planet blocking out a portion of the solid angle.
Radial Velocity Changes detection works by finding small redshift/blueshifts in the star’s color. These are from planet(s) gravity pulling the star as they orbit, which changes its radial velocity relative to earth in a predictable manner.
From the precise magnitudes and timings of these events, many parameters like planet radius, orbital period, and (inferred) mass are known. If both transits and radial velocity changes are detected for the same star system, there may be enough data to tell if there is a significant light emission coming from the “dark side” of the planet. This would likely need to be much brighter than Earth city lights to be detectable. Think Death Star lazer in terms of necessary power.
Resources:
Exoplanet Archive
Detection Types
answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
$endgroup$
add a comment |
$begingroup$
Exoplanets are found in a variety of ways. Two rather common ways are star transits and radial velocity changes.
Star transits are found by continuously measuring the brightness of the Star, and looking for dips that resemble a planet blocking out a portion of the solid angle.
Radial Velocity Changes detection works by finding small redshift/blueshifts in the star’s color. These are from planet(s) gravity pulling the star as they orbit, which changes its radial velocity relative to earth in a predictable manner.
From the precise magnitudes and timings of these events, many parameters like planet radius, orbital period, and (inferred) mass are known. If both transits and radial velocity changes are detected for the same star system, there may be enough data to tell if there is a significant light emission coming from the “dark side” of the planet. This would likely need to be much brighter than Earth city lights to be detectable. Think Death Star lazer in terms of necessary power.
Resources:
Exoplanet Archive
Detection Types
answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
$endgroup$
Exoplanets are found in a variety of ways. Two rather common ways are star transits and radial velocity changes.
Star transits are found by continuously measuring the brightness of the Star, and looking for dips that resemble a planet blocking out a portion of the solid angle.
Radial Velocity Changes detection works by finding small redshift/blueshifts in the star’s color. These are from planet(s) gravity pulling the star as they orbit, which changes its radial velocity relative to earth in a predictable manner.
From the precise magnitudes and timings of these events, many parameters like planet radius, orbital period, and (inferred) mass are known. If both transits and radial velocity changes are detected for the same star system, there may be enough data to tell if there is a significant light emission coming from the “dark side” of the planet. This would likely need to be much brighter than Earth city lights to be detectable. Think Death Star lazer in terms of necessary power.
Resources:
Exoplanet Archive
Detection Types
answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
edited 6 hours ago
answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
answered 6 hours ago
CourageousPotatoCourageousPotato
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answered 6 hours ago
CourageousPotatoCourageousPotato
1,2431 silver badge10 bronze badges
1,2431 silver badge10 bronze badges
add a comment |
add a comment |
$begingroup$
City lights are not detectable today, but it is possible in the future. It would require:
future generations of telescopes on the ground and in space that would have the capacity to detect phase modulation due to very strong artificial illumination on the nightside of planets as they orbit their parent stars.
-- "Detection Technique for Artificially Illuminated Objects in the Outer Solar System and Beyond" - A. Loeb, E. Turner
See also: My answer to "How would we detect an Earth doppelganger planet?" at Astronomy Stack Exchange
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
$endgroup$
add a comment |
$begingroup$
City lights are not detectable today, but it is possible in the future. It would require:
future generations of telescopes on the ground and in space that would have the capacity to detect phase modulation due to very strong artificial illumination on the nightside of planets as they orbit their parent stars.
-- "Detection Technique for Artificially Illuminated Objects in the Outer Solar System and Beyond" - A. Loeb, E. Turner
See also: My answer to "How would we detect an Earth doppelganger planet?" at Astronomy Stack Exchange
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
$endgroup$
add a comment |
$begingroup$
City lights are not detectable today, but it is possible in the future. It would require:
future generations of telescopes on the ground and in space that would have the capacity to detect phase modulation due to very strong artificial illumination on the nightside of planets as they orbit their parent stars.
-- "Detection Technique for Artificially Illuminated Objects in the Outer Solar System and Beyond" - A. Loeb, E. Turner
See also: My answer to "How would we detect an Earth doppelganger planet?" at Astronomy Stack Exchange
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
$endgroup$
City lights are not detectable today, but it is possible in the future. It would require:
future generations of telescopes on the ground and in space that would have the capacity to detect phase modulation due to very strong artificial illumination on the nightside of planets as they orbit their parent stars.
-- "Detection Technique for Artificially Illuminated Objects in the Outer Solar System and Beyond" - A. Loeb, E. Turner
See also: My answer to "How would we detect an Earth doppelganger planet?" at Astronomy Stack Exchange
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
answered 4 hours ago
called2voyage♦called2voyage
17.7k8 gold badges83 silver badges133 bronze badges
17.7k8 gold badges83 silver badges133 bronze badges
add a comment |
add a comment |
Robert m Gilmore is a new contributor. Be nice, and check out our Code of Conduct.
Robert m Gilmore is a new contributor. Be nice, and check out our Code of Conduct.
Robert m Gilmore is a new contributor. Be nice, and check out our Code of Conduct.
Robert m Gilmore is a new contributor. Be nice, and check out our Code of Conduct.
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1
$begingroup$
The Earth is dark on the dark side, except where there is human activity. We’ve never seen a planet with any life on it at all, much less life that’s in the business of creating powerful illumination.
$endgroup$
– Jacob Krall
8 hours ago
$begingroup$
Do you mean "if it was like Earth" in that it was inhabited, or "Earth-like"? We can see light pollution from space, but that will also depend on how much light is being emitted
$endgroup$
– Punintended
8 hours ago
4
$begingroup$
Are you asking about artificial lights on an extrasolar planet?
$endgroup$
– Organic Marble
8 hours ago
1
$begingroup$
We have difficulty enough seeing exoplanets to begin with. Asking for the dark side where artificial lighting would be far dimmer than what gets reflected in the daytime seems a bit much for me. And if Earth were any indication, radio detection would be an excellent alternative for detecting an advanced civilization.
$endgroup$
– Oscar Lanzi
7 hours ago