If the Earth was part of an ultimate solar system, what would the sky look like?












7












$begingroup$


I once show a picture depicticting the idea of an ultimate solar system:
enter image description here



Image Copyright Sean Raymond



In this solar system there are 8 planetary orbits, each containing 52 equal-mass, evenly-spaced planets all in the habitable zone.



Now, imagine that in the far far future, humanity has the energy and resources to engineer such a solar system. If we succeded, (assuming that this solar system really is stable and there won't be any catastrophic collisions between the earth and any other planet) how would the sky be different. What I mean is, would the planets that are at the same orbit as Earth or beyond the earth's orbit be visible during the night or the day? And what about the planets that are in front of the Earths orbit, would they be visible during the day? Could they cause minor eclipses when passing in front of the Earth or they wouldn't be visible at all to our eyes.



Also another question about this solar system is, would the Earth be capable of holding it's moon? Would the neighboring planets be too close to the moon when it rotates around the earth, or would there be enough space for the moon's orbit around the earth be unaffected?



Edit:If the planets beyond Earth were visible by night how would they look like to the human eye? Assuming that the Earth was located at the fifth orbit (I'm not exactly sure which of these orbits represents the Earth's orbit, please correct me if it is) how visible would the planets be? Would they seem, like stars like venus or mars, or would they look like smaller versions of the moon?










share|improve this question











$endgroup$








  • 3




    $begingroup$
    Please credit the creator of this work, Sean Raymond, who also showed the stability of this system. His website: planetplanet.net/author/snraymond
    $endgroup$
    – AtmosphericPrisonEscape
    yesterday










  • $begingroup$
    The Ultimate Solar system was designed as a model of what a super advanced civilization might create using science and technology advanced thousands or millions of years beyond ours. Sean Raymond never specified that the ultimate engineered solar system would be built using our solar system as one of the components. You are the source of the idea that our planet Earth might be orbiting in some version of the ultimate engineered solar system. You can put Earth in such a system in your story if you want to, or not if you don't want to.
    $endgroup$
    – M. A. Golding
    yesterday


















7












$begingroup$


I once show a picture depicticting the idea of an ultimate solar system:
enter image description here



Image Copyright Sean Raymond



In this solar system there are 8 planetary orbits, each containing 52 equal-mass, evenly-spaced planets all in the habitable zone.



Now, imagine that in the far far future, humanity has the energy and resources to engineer such a solar system. If we succeded, (assuming that this solar system really is stable and there won't be any catastrophic collisions between the earth and any other planet) how would the sky be different. What I mean is, would the planets that are at the same orbit as Earth or beyond the earth's orbit be visible during the night or the day? And what about the planets that are in front of the Earths orbit, would they be visible during the day? Could they cause minor eclipses when passing in front of the Earth or they wouldn't be visible at all to our eyes.



Also another question about this solar system is, would the Earth be capable of holding it's moon? Would the neighboring planets be too close to the moon when it rotates around the earth, or would there be enough space for the moon's orbit around the earth be unaffected?



Edit:If the planets beyond Earth were visible by night how would they look like to the human eye? Assuming that the Earth was located at the fifth orbit (I'm not exactly sure which of these orbits represents the Earth's orbit, please correct me if it is) how visible would the planets be? Would they seem, like stars like venus or mars, or would they look like smaller versions of the moon?










share|improve this question











$endgroup$








  • 3




    $begingroup$
    Please credit the creator of this work, Sean Raymond, who also showed the stability of this system. His website: planetplanet.net/author/snraymond
    $endgroup$
    – AtmosphericPrisonEscape
    yesterday










  • $begingroup$
    The Ultimate Solar system was designed as a model of what a super advanced civilization might create using science and technology advanced thousands or millions of years beyond ours. Sean Raymond never specified that the ultimate engineered solar system would be built using our solar system as one of the components. You are the source of the idea that our planet Earth might be orbiting in some version of the ultimate engineered solar system. You can put Earth in such a system in your story if you want to, or not if you don't want to.
    $endgroup$
    – M. A. Golding
    yesterday
















7












7








7





$begingroup$


I once show a picture depicticting the idea of an ultimate solar system:
enter image description here



Image Copyright Sean Raymond



In this solar system there are 8 planetary orbits, each containing 52 equal-mass, evenly-spaced planets all in the habitable zone.



Now, imagine that in the far far future, humanity has the energy and resources to engineer such a solar system. If we succeded, (assuming that this solar system really is stable and there won't be any catastrophic collisions between the earth and any other planet) how would the sky be different. What I mean is, would the planets that are at the same orbit as Earth or beyond the earth's orbit be visible during the night or the day? And what about the planets that are in front of the Earths orbit, would they be visible during the day? Could they cause minor eclipses when passing in front of the Earth or they wouldn't be visible at all to our eyes.



Also another question about this solar system is, would the Earth be capable of holding it's moon? Would the neighboring planets be too close to the moon when it rotates around the earth, or would there be enough space for the moon's orbit around the earth be unaffected?



Edit:If the planets beyond Earth were visible by night how would they look like to the human eye? Assuming that the Earth was located at the fifth orbit (I'm not exactly sure which of these orbits represents the Earth's orbit, please correct me if it is) how visible would the planets be? Would they seem, like stars like venus or mars, or would they look like smaller versions of the moon?










share|improve this question











$endgroup$




I once show a picture depicticting the idea of an ultimate solar system:
enter image description here



Image Copyright Sean Raymond



In this solar system there are 8 planetary orbits, each containing 52 equal-mass, evenly-spaced planets all in the habitable zone.



Now, imagine that in the far far future, humanity has the energy and resources to engineer such a solar system. If we succeded, (assuming that this solar system really is stable and there won't be any catastrophic collisions between the earth and any other planet) how would the sky be different. What I mean is, would the planets that are at the same orbit as Earth or beyond the earth's orbit be visible during the night or the day? And what about the planets that are in front of the Earths orbit, would they be visible during the day? Could they cause minor eclipses when passing in front of the Earth or they wouldn't be visible at all to our eyes.



Also another question about this solar system is, would the Earth be capable of holding it's moon? Would the neighboring planets be too close to the moon when it rotates around the earth, or would there be enough space for the moon's orbit around the earth be unaffected?



Edit:If the planets beyond Earth were visible by night how would they look like to the human eye? Assuming that the Earth was located at the fifth orbit (I'm not exactly sure which of these orbits represents the Earth's orbit, please correct me if it is) how visible would the planets be? Would they seem, like stars like venus or mars, or would they look like smaller versions of the moon?







planets earth solar-system day-night






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited yesterday







ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ

















asked yesterday









ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ

37639




37639








  • 3




    $begingroup$
    Please credit the creator of this work, Sean Raymond, who also showed the stability of this system. His website: planetplanet.net/author/snraymond
    $endgroup$
    – AtmosphericPrisonEscape
    yesterday










  • $begingroup$
    The Ultimate Solar system was designed as a model of what a super advanced civilization might create using science and technology advanced thousands or millions of years beyond ours. Sean Raymond never specified that the ultimate engineered solar system would be built using our solar system as one of the components. You are the source of the idea that our planet Earth might be orbiting in some version of the ultimate engineered solar system. You can put Earth in such a system in your story if you want to, or not if you don't want to.
    $endgroup$
    – M. A. Golding
    yesterday
















  • 3




    $begingroup$
    Please credit the creator of this work, Sean Raymond, who also showed the stability of this system. His website: planetplanet.net/author/snraymond
    $endgroup$
    – AtmosphericPrisonEscape
    yesterday










  • $begingroup$
    The Ultimate Solar system was designed as a model of what a super advanced civilization might create using science and technology advanced thousands or millions of years beyond ours. Sean Raymond never specified that the ultimate engineered solar system would be built using our solar system as one of the components. You are the source of the idea that our planet Earth might be orbiting in some version of the ultimate engineered solar system. You can put Earth in such a system in your story if you want to, or not if you don't want to.
    $endgroup$
    – M. A. Golding
    yesterday










3




3




$begingroup$
Please credit the creator of this work, Sean Raymond, who also showed the stability of this system. His website: planetplanet.net/author/snraymond
$endgroup$
– AtmosphericPrisonEscape
yesterday




$begingroup$
Please credit the creator of this work, Sean Raymond, who also showed the stability of this system. His website: planetplanet.net/author/snraymond
$endgroup$
– AtmosphericPrisonEscape
yesterday












$begingroup$
The Ultimate Solar system was designed as a model of what a super advanced civilization might create using science and technology advanced thousands or millions of years beyond ours. Sean Raymond never specified that the ultimate engineered solar system would be built using our solar system as one of the components. You are the source of the idea that our planet Earth might be orbiting in some version of the ultimate engineered solar system. You can put Earth in such a system in your story if you want to, or not if you don't want to.
$endgroup$
– M. A. Golding
yesterday






$begingroup$
The Ultimate Solar system was designed as a model of what a super advanced civilization might create using science and technology advanced thousands or millions of years beyond ours. Sean Raymond never specified that the ultimate engineered solar system would be built using our solar system as one of the components. You are the source of the idea that our planet Earth might be orbiting in some version of the ultimate engineered solar system. You can put Earth in such a system in your story if you want to, or not if you don't want to.
$endgroup$
– M. A. Golding
yesterday












1 Answer
1






active

oldest

votes


















5












$begingroup$

Edit



According to AlexP Venus is visible during the day so This changes my answer about day visibility to yes. Sorry for the mistake.



Visible by Night?



According to Wikipedia the most common estimate for the habitable zone is from 0.95 to 1.37 AU (Astronomical Units: average distance between Earth and sun) so we have $6.283 cdot 10^{10}m$ of room to fit 8 Earths into. This means in most cases the planets will be way closer than even Venus (which is the third most bright object after sun and moon)



So the answer is easily YES (every Planet that is in line of sight).



Visible by Day?



For this we assume the moon is about 1 cm big for the naked human eye. (If you haven't noticed the moon is visible during the day)



So the moon has a diameter of 3 476 000 m and is 384 400 000 m apart from our earth so the size reduction per meter is about 9 times smaller.



To get the distance to Planets are apart from each other (at least) we simply divide our habitable zone length by 8 for each orbit circle. Which we get 7 853 888 175meters for. Multiplied by our shrinking factor we get a size reduction to the eye of $7.068 cdot 10^{10}$ which for a planet the size of the earth means it would be around the size of a dust particle. YES



What about planets in the same orbit?



First we will take a look at the smallest orbit (0.95 AU).



The orbit length can be calculated by this Formula: $Ol = 2pi cdot r$ Ol = Orbit length. With this we get a length of $8.9295 cdot 10^{11}m$ when we divide this by 52 we get the distance between two planets in the same orbit with: $1.717 cdot 10^{10}m$ which is far grater than the distance between two planets in different orbits but still closer than Venus most of the time so YES



Eclipses?



Due to their small size there wouldn't be any noticeable effect. So NO



Could earth keep its moon?



Due to the Planets on other orbits constantly the moons orbit wouldn't be as predictable as it is in our solar system and its orbit would resemble more that of Hyperion than that of our current moon. Basically it would wiggle in its orbit.
So the answer is
YES






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
    $endgroup$
    – AlexP
    yesterday










  • $begingroup$
    @AlexP OK thanks for the info didn't know that.
    $endgroup$
    – Soan
    yesterday










  • $begingroup$
    @AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
    $endgroup$
    – cmaster
    yesterday










  • $begingroup$
    @cmaster Thanks for the info I will include another edit adjusting for this formula.
    $endgroup$
    – Soan
    yesterday











Your Answer





StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
});
});
}, "mathjax-editing");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "579"
};
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%2fworldbuilding.stackexchange.com%2fquestions%2f137794%2fif-the-earth-was-part-of-an-ultimate-solar-system-what-would-the-sky-look-like%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









5












$begingroup$

Edit



According to AlexP Venus is visible during the day so This changes my answer about day visibility to yes. Sorry for the mistake.



Visible by Night?



According to Wikipedia the most common estimate for the habitable zone is from 0.95 to 1.37 AU (Astronomical Units: average distance between Earth and sun) so we have $6.283 cdot 10^{10}m$ of room to fit 8 Earths into. This means in most cases the planets will be way closer than even Venus (which is the third most bright object after sun and moon)



So the answer is easily YES (every Planet that is in line of sight).



Visible by Day?



For this we assume the moon is about 1 cm big for the naked human eye. (If you haven't noticed the moon is visible during the day)



So the moon has a diameter of 3 476 000 m and is 384 400 000 m apart from our earth so the size reduction per meter is about 9 times smaller.



To get the distance to Planets are apart from each other (at least) we simply divide our habitable zone length by 8 for each orbit circle. Which we get 7 853 888 175meters for. Multiplied by our shrinking factor we get a size reduction to the eye of $7.068 cdot 10^{10}$ which for a planet the size of the earth means it would be around the size of a dust particle. YES



What about planets in the same orbit?



First we will take a look at the smallest orbit (0.95 AU).



The orbit length can be calculated by this Formula: $Ol = 2pi cdot r$ Ol = Orbit length. With this we get a length of $8.9295 cdot 10^{11}m$ when we divide this by 52 we get the distance between two planets in the same orbit with: $1.717 cdot 10^{10}m$ which is far grater than the distance between two planets in different orbits but still closer than Venus most of the time so YES



Eclipses?



Due to their small size there wouldn't be any noticeable effect. So NO



Could earth keep its moon?



Due to the Planets on other orbits constantly the moons orbit wouldn't be as predictable as it is in our solar system and its orbit would resemble more that of Hyperion than that of our current moon. Basically it would wiggle in its orbit.
So the answer is
YES






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
    $endgroup$
    – AlexP
    yesterday










  • $begingroup$
    @AlexP OK thanks for the info didn't know that.
    $endgroup$
    – Soan
    yesterday










  • $begingroup$
    @AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
    $endgroup$
    – cmaster
    yesterday










  • $begingroup$
    @cmaster Thanks for the info I will include another edit adjusting for this formula.
    $endgroup$
    – Soan
    yesterday
















5












$begingroup$

Edit



According to AlexP Venus is visible during the day so This changes my answer about day visibility to yes. Sorry for the mistake.



Visible by Night?



According to Wikipedia the most common estimate for the habitable zone is from 0.95 to 1.37 AU (Astronomical Units: average distance between Earth and sun) so we have $6.283 cdot 10^{10}m$ of room to fit 8 Earths into. This means in most cases the planets will be way closer than even Venus (which is the third most bright object after sun and moon)



So the answer is easily YES (every Planet that is in line of sight).



Visible by Day?



For this we assume the moon is about 1 cm big for the naked human eye. (If you haven't noticed the moon is visible during the day)



So the moon has a diameter of 3 476 000 m and is 384 400 000 m apart from our earth so the size reduction per meter is about 9 times smaller.



To get the distance to Planets are apart from each other (at least) we simply divide our habitable zone length by 8 for each orbit circle. Which we get 7 853 888 175meters for. Multiplied by our shrinking factor we get a size reduction to the eye of $7.068 cdot 10^{10}$ which for a planet the size of the earth means it would be around the size of a dust particle. YES



What about planets in the same orbit?



First we will take a look at the smallest orbit (0.95 AU).



The orbit length can be calculated by this Formula: $Ol = 2pi cdot r$ Ol = Orbit length. With this we get a length of $8.9295 cdot 10^{11}m$ when we divide this by 52 we get the distance between two planets in the same orbit with: $1.717 cdot 10^{10}m$ which is far grater than the distance between two planets in different orbits but still closer than Venus most of the time so YES



Eclipses?



Due to their small size there wouldn't be any noticeable effect. So NO



Could earth keep its moon?



Due to the Planets on other orbits constantly the moons orbit wouldn't be as predictable as it is in our solar system and its orbit would resemble more that of Hyperion than that of our current moon. Basically it would wiggle in its orbit.
So the answer is
YES






share|improve this answer











$endgroup$









  • 1




    $begingroup$
    Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
    $endgroup$
    – AlexP
    yesterday










  • $begingroup$
    @AlexP OK thanks for the info didn't know that.
    $endgroup$
    – Soan
    yesterday










  • $begingroup$
    @AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
    $endgroup$
    – cmaster
    yesterday










  • $begingroup$
    @cmaster Thanks for the info I will include another edit adjusting for this formula.
    $endgroup$
    – Soan
    yesterday














5












5








5





$begingroup$

Edit



According to AlexP Venus is visible during the day so This changes my answer about day visibility to yes. Sorry for the mistake.



Visible by Night?



According to Wikipedia the most common estimate for the habitable zone is from 0.95 to 1.37 AU (Astronomical Units: average distance between Earth and sun) so we have $6.283 cdot 10^{10}m$ of room to fit 8 Earths into. This means in most cases the planets will be way closer than even Venus (which is the third most bright object after sun and moon)



So the answer is easily YES (every Planet that is in line of sight).



Visible by Day?



For this we assume the moon is about 1 cm big for the naked human eye. (If you haven't noticed the moon is visible during the day)



So the moon has a diameter of 3 476 000 m and is 384 400 000 m apart from our earth so the size reduction per meter is about 9 times smaller.



To get the distance to Planets are apart from each other (at least) we simply divide our habitable zone length by 8 for each orbit circle. Which we get 7 853 888 175meters for. Multiplied by our shrinking factor we get a size reduction to the eye of $7.068 cdot 10^{10}$ which for a planet the size of the earth means it would be around the size of a dust particle. YES



What about planets in the same orbit?



First we will take a look at the smallest orbit (0.95 AU).



The orbit length can be calculated by this Formula: $Ol = 2pi cdot r$ Ol = Orbit length. With this we get a length of $8.9295 cdot 10^{11}m$ when we divide this by 52 we get the distance between two planets in the same orbit with: $1.717 cdot 10^{10}m$ which is far grater than the distance between two planets in different orbits but still closer than Venus most of the time so YES



Eclipses?



Due to their small size there wouldn't be any noticeable effect. So NO



Could earth keep its moon?



Due to the Planets on other orbits constantly the moons orbit wouldn't be as predictable as it is in our solar system and its orbit would resemble more that of Hyperion than that of our current moon. Basically it would wiggle in its orbit.
So the answer is
YES






share|improve this answer











$endgroup$



Edit



According to AlexP Venus is visible during the day so This changes my answer about day visibility to yes. Sorry for the mistake.



Visible by Night?



According to Wikipedia the most common estimate for the habitable zone is from 0.95 to 1.37 AU (Astronomical Units: average distance between Earth and sun) so we have $6.283 cdot 10^{10}m$ of room to fit 8 Earths into. This means in most cases the planets will be way closer than even Venus (which is the third most bright object after sun and moon)



So the answer is easily YES (every Planet that is in line of sight).



Visible by Day?



For this we assume the moon is about 1 cm big for the naked human eye. (If you haven't noticed the moon is visible during the day)



So the moon has a diameter of 3 476 000 m and is 384 400 000 m apart from our earth so the size reduction per meter is about 9 times smaller.



To get the distance to Planets are apart from each other (at least) we simply divide our habitable zone length by 8 for each orbit circle. Which we get 7 853 888 175meters for. Multiplied by our shrinking factor we get a size reduction to the eye of $7.068 cdot 10^{10}$ which for a planet the size of the earth means it would be around the size of a dust particle. YES



What about planets in the same orbit?



First we will take a look at the smallest orbit (0.95 AU).



The orbit length can be calculated by this Formula: $Ol = 2pi cdot r$ Ol = Orbit length. With this we get a length of $8.9295 cdot 10^{11}m$ when we divide this by 52 we get the distance between two planets in the same orbit with: $1.717 cdot 10^{10}m$ which is far grater than the distance between two planets in different orbits but still closer than Venus most of the time so YES



Eclipses?



Due to their small size there wouldn't be any noticeable effect. So NO



Could earth keep its moon?



Due to the Planets on other orbits constantly the moons orbit wouldn't be as predictable as it is in our solar system and its orbit would resemble more that of Hyperion than that of our current moon. Basically it would wiggle in its orbit.
So the answer is
YES







share|improve this answer














share|improve this answer



share|improve this answer








edited yesterday

























answered yesterday









SoanSoan

2,086419




2,086419








  • 1




    $begingroup$
    Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
    $endgroup$
    – AlexP
    yesterday










  • $begingroup$
    @AlexP OK thanks for the info didn't know that.
    $endgroup$
    – Soan
    yesterday










  • $begingroup$
    @AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
    $endgroup$
    – cmaster
    yesterday










  • $begingroup$
    @cmaster Thanks for the info I will include another edit adjusting for this formula.
    $endgroup$
    – Soan
    yesterday














  • 1




    $begingroup$
    Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
    $endgroup$
    – AlexP
    yesterday










  • $begingroup$
    @AlexP OK thanks for the info didn't know that.
    $endgroup$
    – Soan
    yesterday










  • $begingroup$
    @AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
    $endgroup$
    – cmaster
    yesterday










  • $begingroup$
    @cmaster Thanks for the info I will include another edit adjusting for this formula.
    $endgroup$
    – Soan
    yesterday








1




1




$begingroup$
Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
$endgroup$
– AlexP
yesterday




$begingroup$
Venus is visible with the naked eye in the day sky. A planet the size of Earth closer than Venus would also be visible in the day sky, obviously.
$endgroup$
– AlexP
yesterday












$begingroup$
@AlexP OK thanks for the info didn't know that.
$endgroup$
– Soan
yesterday




$begingroup$
@AlexP OK thanks for the info didn't know that.
$endgroup$
– Soan
yesterday












$begingroup$
@AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
$endgroup$
– cmaster
yesterday




$begingroup$
@AlexP But Venus is only so bright because it's so close to the sun. The brightness of a planet is basically proportional to the inverse square of the both the distances to the sun and the astronomer. Basically $approx frac{1}{d_{sun}^2}cdot r^2cdotfrac{1}{d_{astronomer}^2}$, where $d_{sun}$ is the distance to the sun, $d_{astronomer}$ is the distance to the observer, and $r$ is the radius of the planet (so $r^2$ is proportional to its surface area).
$endgroup$
– cmaster
yesterday












$begingroup$
@cmaster Thanks for the info I will include another edit adjusting for this formula.
$endgroup$
– Soan
yesterday




$begingroup$
@cmaster Thanks for the info I will include another edit adjusting for this formula.
$endgroup$
– Soan
yesterday


















draft saved

draft discarded




















































Thanks for contributing an answer to Worldbuilding 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%2fworldbuilding.stackexchange.com%2fquestions%2f137794%2fif-the-earth-was-part-of-an-ultimate-solar-system-what-would-the-sky-look-like%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

If I really need a card on my start hand, how many mulligans make sense? [duplicate]

Alcedinidae

Can an atomic nucleus contain both particles and antiparticles? [duplicate]