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Rigorous Science

Posts tagged planets

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Q&A How would normal colors be affected if a planet's atmosphere was green?

Good day everyone. I've recently finally gotten around to writing a sci fi novel but need help on some of the science of a few concepts I would like to incorporate in the novel. I'll start with ...

3 answers  ·  posted 4y ago by Primordial‭  ·  last activity 4y ago by Primordial‭

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Q&A Best place on Earth to fake being on a distant planet?

Lets say an alien trickster wants to trick a group of human astronauts into thinking they've been transported to another world far away. But in reality, he wants them to stay on good old Earth, thr...

17 answers  ·  posted 4y ago by DT Cooper‭  ·  last activity 4y ago by DT Cooper‭

Question space planets earth
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Q&A How quickly could a rogue Earth return to habitability after a deep freeze?

Background A large star makes a relatively close approach to a solar system like our own and the orbits of many of the planets are badly perturbed. A planet similar to Earth is in the wrong place a...

3 answers  ·  posted 4y ago by Slarty‭  ·  last activity 4y ago by Slarty‭

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Q&A What would happen to a gas giant during a supernova?

Fairly straightforward question. Imagine a gas giant planet, like the size of Jupiter, in orbit around a massive star. The star goes supernova. What happens to the planet? Is the energy of the su...

2 answers  ·  posted 4y ago by Geroditus‭  ·  last activity 4y ago by Geroditus‭

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Q&A Plausible reason not to notice a planet

Imagine a generation ship heading for a distant star. Humanity had means to observe that star up to a point, that it is 99.9% sure the star has a colonizable Earth-like planet (with water and atmos...

9 answers  ·  posted 4y ago by Maxim Zabolotskikh‭  ·  last activity 4y ago by Maxim Zabolotskikh‭

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Q&A An anti matter planet behaving like a star

In your space journey your ship systems have spotted an unusual source of gamma rays: it's the size and the mass of a planet and it has a pulsating behaviour. Further observations shows that you ...

4 answers  ·  posted 7y ago by L.Dutch - Reinstate Monica‭  ·  last activity 4y ago by L.Dutch - Reinstate Monica‭

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Q&A The Earth and Moon resolidify under a bluer star, their outer layers evaporated and burned away. What do they look like now?

(This is the third in a series of questions, starting with Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands? and How soon does the Earth's surf...

1 answer  ·  posted 4y ago by Astrid_Redfern‭  ·  last activity 4y ago by Astrid_Redfern‭

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Q&A Is it possible for a habitable planet to have 7 suns?

So I have a concept for a habitable alien planet that has 7 suns. This planet is supposed to have a surface similar to Earth, it doesn't have to be habitable to humans but should be capable of ho...

3 answers  ·  posted 4y ago by JordanTheCynic‭  ·  last activity 4y ago by JordanTheCynic‭

Question planets
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Q&A Binary planets that are not tidally locked

The story takes place in Alpha Centauri, with this binary orbiting just over 1 AU from Rigil Kentaurus. The star system will tightly packed, but following the 10 Mutual Hill Radii separation setup....

1 answer  ·  posted 4y ago by user72655‭  ·  last activity 4y ago by user72655‭

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Q&A Gravity/Ecosystem on a peanut-shaped planet?

I'm interested about whether or not and how gravity would be affected on deformed planets. You could think of this as whether or not mega-asteroids would be able to sustain life? If so, would diffe...

2 answers  ·  posted 6y ago by DiagonalCorgi‭  ·  last activity 4y ago by DiagonalCorgi‭

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Rigorous Science How to calculate the thickness of the ice layer of a frozen ocean planet/moon?

How do I calculate the thickness of the upper ice layer on cold ocean worlds like Europa, Enceladus, and Ganymede? I'm asking this for a programm I'm currently writing. The given/known quantities ...

4 answers  ·  posted 5y ago by TheDyingOfLight‭  ·  last activity 4y ago by TheDyingOfLight‭

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Q&A Would this type of atmosphere be suitable for human life?

I've been trying to create a Earth-like planet but I'm not sure if my planet's atmosphere is breathable. (It's mostly the amount of helium I'm worried about). I've tried to make it Earth-like whil...

4 answers  ·  posted 6y ago by A good username‭  ·  last activity 4y ago by A good username‭

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Q&A Would naturally occuring room temperature superconductors affect a planet?

Say we have a planet, similar to Earth, which has deposits of a naturally occuring superconductor. Perhaps have it about as common as deposits of gold - Moderately rare, but occurs in veins as oppo...

4 answers  ·  posted 6y ago by Andon‭  ·  last activity 4y ago by Andon‭

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Q&A Would the human body support living on planets with a greater gravity than Earth?

I once read a novel about a prison-planet which was chosen to make the prisoners suffer. One of the different "tortures" was a gravity three times higher than that on Earth. Would the human body s...

14 answers  ·  posted 9y ago by Garoal‭  ·  last activity 4y ago by Garoal‭

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Q&A Could this uniquely shaped planet exist?

Now, I know that planets can't be disc-shaped. However, if a relatively small planet had a very strong magnetical pull, could it have a ring system that could make the planet from afar seem disc-sh...

2 answers  ·  posted 4y ago by Anonymous‭  ·  last activity 4y ago by Anonymous‭

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Q&A How to explain a planet with visible cosmos at daytime?

So I'm working on a fictional planet which would experience a daytime sky similar to this. This particular picture is from the movie Valerian: City of a Thousand Planets. Fictional alien atmosph...

3 answers  ·  posted 4y ago by JordanTheCynic‭  ·  last activity 4y ago by JordanTheCynic‭

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Q&A Inhabiting Mars versus going straight for a Dyson swarm

My question is as follows - let's assume our objective function is to have as many humans as possible living outside the confines of the Earth as soon as possible. For this, we need to provide thos...

6 answers  ·  posted 5y ago by Rohit Pandey‭  ·  last activity 4y ago by Rohit Pandey‭

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Q&A How to Make This Alternate Earth as Black as The Dark Knight

"The Dark Knight" is a nickname given by astronomers to the exoplanet TrES-2b, a gas giant with an albedo of one percent, blacker than paint, blacker than coal"”in fact, blacker than anything on Ea...

2 answers  ·  posted 4y ago by JohnWDailey‭  ·  last activity 4y ago by JohnWDailey‭

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Q&A How do I calculate the hours of daylight on an arbitrary planet for a given day at a given latitude?

I want to be able to graph the change in daylight hours across the year for a given latitude, to get an idea of what kind of cycle in available daylight people at that latitude would live through a...

6 answers  ·  posted 4y ago by The Quivering Frond of Destiny‭  ·  last activity 4y ago by The Quivering Frond of Destiny‭

Question planets day-night
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Q&A Can a planet with blue glowing plants exist?

I have a planet where I want all plants to be blue and glowing. I was thinking that they could use something other than light for energy. I want the plants to always glow. The atmosphere is basical...

3 answers  ·  posted 4y ago by Vexxen‭  ·  last activity 4y ago by Vexxen‭

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Q&A Can an atmosphere be thicker at higher altitudes?

Can a world exist where the atmosphere is actually thicker at some altitude than at sea level? If so, what mechanisms would be involved?

5 answers  ·  posted 4y ago by Renan‭  ·  last activity 4y ago by Renan‭

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Q&A What would the geologic record look like on a planet in the galactic halo?

Imagine an Earth-like planet orbiting a Sun-like star in the inner halo of the Milky Way. As a halo star, it will likely be somewhat metal-poor, having formed early in the life of the galaxy, but o...

3 answers  ·  posted 4y ago by HDE 226868‭  ·  last activity 4y ago by HDE 226868‭

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Q&A Ways to increase temperature and still be habitable by humans

I am designing a planet that humans can live on for a few tens of thousands of years, while they are hiding from some sort of inter-galactic police force (or whatever). Therefore, it's important th...

3 answers  ·  posted 4y ago by Doh‭  ·  last activity 4y ago by Doh‭

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Q&A Feasibility of a massive and nigh-permanent sandstorm?

In my military sci fi story in which a squad of private contractors have to contend with hostile creatures reliant on scent and mechanoreception to hunt, I wanted to keep the sci-fi 'hard' and plau...

2 answers  ·  posted 4y ago by Delirium‭  ·  last activity 4y ago by Delirium‭

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Q&A Could an alien species from lower gravity survive on Earth?

I remember reading this thing somewhere about how humans born in zero gravity environments would likely be taller than Earth-bound humans but also more fragile and unable to handle Earth's gravity ...

1 answer  ·  posted 4y ago by PastelSkulls‭  ·  last activity 4y ago by PastelSkulls‭

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Q&A Planet with only plant life?

Is it possible for there to be a planet where no animals, only plants existed? What evolutionary reasons would cause this, if possible?

12 answers  ·  posted 4y ago by DT Cooper‭  ·  last activity 4y ago by DT Cooper‭

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Q&A What would life (some of it humanoid) be like on a planet with high amounts of silver?

The planet I'm developing has iron in low supply but a high concentration of silver. The planet is habitable for humans and for story reasons the sentient race must be humanoid. Is it feasible for ...

1 answer  ·  posted 4y ago by Samuel Hope‭  ·  last activity 4y ago by Samuel Hope‭

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Q&A How soon does the Earth's surface re-solidify after the red-giant Sun is replaced with a different star?

(Note: This is a follow-up question to my previous one: Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands?) Thanks to clever stellar engineerin...

2 answers  ·  posted 4y ago by Astrid_Redfern‭  ·  last activity 4y ago by Astrid_Redfern‭

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Q&A Is it possible to place a permanent probe on Uranus?

Before anyone points the finger saying this is a tasteless joke, there are some actual good reasons to pick that specific planet for exploration among the giants in our solar system: Smallest mas...

2 answers  ·  posted 5y ago by Renan‭  ·  last activity 4y ago by Renan‭

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Q&A How to calculate the solar day from sidereal day and sidereal orbital period?

I know the orbital period of my planet and the rotational period of my planet. Now how do I calculate the solar day? It would only be a small difference to be sure, but do remember that if we didn'...

1 answer  ·  posted 7y ago by GregroxMun‭  ·  last activity 4y ago by GregroxMun‭

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Q&A How Would These Planets Affect Earth's Eccentricity?

A cleaner, narrower-focused improvement of How This Alternate Solar System Influences the Milankovitch Cycle, so not a duplicate. For further clarification, eccentricity is the shape of a planet's...

1 answer  ·  posted 4y ago by JohnWDailey‭  ·  last activity 4y ago by JohnWDailey‭

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Q&A Asteroid in the asteroid belt suddenly gains the gravity of the earth

An entrepreneur has a dream. He wants to create the most amazing and magical amusement park in the solar system. He goes to investors with the blue prints of the park, and they think it's a good id...

4 answers  ·  posted 5y ago by William Oliver‭  ·  last activity 4y ago by William Oliver‭

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Q&A How could an Earth-like planet support all-metal airships?

When I say all-metal airships, I'm referring to something like the above from Jakub Rozalski's artwork - the design is more akin to a naval destroyer or battleship and less like a zeppelin. We'v...

6 answers  ·  posted 4y ago by Vigilant‭  ·  last activity 4y ago by Vigilant‭

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Q&A Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands?

Short version A far future catastrophe burns/melts away large chunks of the Earth and Moon. For reasons related to my story's fantasy elements, the remains of the Moon have about one fifth their or...

1 answer  ·  posted 4y ago by Astrid_Redfern‭  ·  last activity 4y ago by Astrid_Redfern‭

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Q&A Is it possible to have a greenhouse effect this strong and still have an atmosphere breathable by humans?

An Earth mass terran planet is orbiting a sun-like star at 2AU. I understand the limit for CO2 greenhouse effects is 1.67AU for whatever reason (giving a conventional habitable zone limit), but per...

1 answer  ·  posted 4y ago by Axion‭  ·  last activity 4y ago by Axion‭

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Q&A Possible compositions of a rogue binary system?

I am attempting to construct a world that is primarily lit by light filtered through and reflected off of a crystalline moon so that, at its brightest, the planet receives about the same amount of ...

2 answers  ·  posted 4y ago by RJEsper‭  ·  last activity 4y ago by RJEsper‭

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Q&A What does a gas giant close to a red dwarf look like?

In my setting, there's a gas giant orbiting in the habitable zone of a red dwarf (for specificity, its radius is about half Jupiter's, and it's 0.35 AU from 61 Cygni B. Ignore the effect of the oth...

1 answer  ·  posted 4y ago by Gilad M‭  ·  last activity 4y ago by Gilad M‭

Question astronomy planets
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Q&A After surviving a black hole/wormhole, what are the chances of Earth start orbiting in a new solar system?

In the event of our sun suddenly becoming a black hole or wormhole of sorts. It transports the earth to another solar system similar to ours. Would it be possible for our planet to start circling...

4 answers  ·  posted 4y ago by Dawidek‭  ·  last activity 4y ago by Dawidek‭

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Rigorous Science Factors that determine the geology of a planet (what factors determine the elemental composition of the planet)

This is my first world and I want to build in a way that is physically possible (if this is possible, otherwise make the necessary changes) for my civilization (which is mostly fleshed out) but I d...

1 answer  ·  posted 4y ago by A. Soreq‭  ·  last activity 4y ago by A. Soreq‭

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Q&A What if Jupiter and Mars swapped orbits?

I am wondering how will it affect earth or none at all. Seeing that Jupiter by far is a gas giant and has really strong gravitational pull while Mars is mostly dormant, weak gravity and a terrestr...

2 answers  ·  posted 4y ago by mico villena‭  ·  last activity 4y ago by mico villena‭

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Q&A What would be best way to re-melt Mars' mantle and core to revive its magnetosphere

Missing magnetosphere on Mars keeps popping up. Most likely caused by Mars core being cold, mantle not bubbly enough. Mars mantle is dormant, core does not move. What would be good way to get it g...

24 answers  ·  posted 9y ago by Peter M. - stands for Monica‭  ·  last activity 4y ago by Peter M. - stands for Monica‭

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Q&A How extreme can a habitable tidaly locked world be?

I want to create a tidally locked world with a habitable (broadly Earth like atmosphere and biome that humans could breathe and live in) band stretching around the terminator pole to pole. There wo...

1 answer  ·  posted 4y ago by Slarty‭  ·  last activity 4y ago by Slarty‭

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Q&A Orange Suns and Blue Jupiters

I am developing a fictional planetary system in which a large gas giant planet (slightly less than the mass of Saturn), has migrated into the habitable zone during the formational years of the syst...

1 answer  ·  posted 4y ago by Arkenstein XII‭  ·  last activity 4y ago by Arkenstein XII‭

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Q&A Alien planet concept: could a completely misty, dark atmosphere be possible?

I was thinking of creating an alien planet that orbits a star slightly past the habitable zone, but is kept warm by an extremely dense atmosphere, made primarily of a black gas, but still contains ...

3 answers  ·  posted 4y ago by Double_S‭  ·  last activity 4y ago by Double_S‭

Question atmosphere planets
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Q&A Would it be possilble to light the dark side of a tidally locked planet using fiber optics from the right side?

Assume planetary-scale cables are easily constructed, and subsequently ignored. I am assuming these cables would run just under the surface of the planet from one side to the other for minimal mai...

1 answer  ·  posted 4y ago by Jerry‭  ·  last activity 4y ago by Jerry‭

Question planets physics light
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Q&A 1 Light Year Diameter Planet

Suppose a species has limitless resources and the ability to construct megastructures of an astronomical scale. Would it be possible, given antigravitational technology (hypothetical), to create a...

14 answers  ·  posted 8y ago by Kcronix‭  ·  last activity 4y ago by Kcronix‭

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Q&A Surface temperature of a icy rogue planet

A certain imaginary stellar system had once a water world. But instead of evaporating away under the stellar wind, this lucky (or unlucky?) water world (made of only water and a gaseous atmosphere)...

3 answers  ·  posted 9y ago by Jorge Aldo‭  ·  last activity 4y ago by Jorge Aldo‭

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Q&A What would the problems with / consequences of a torus shaped planet be?

Take a torus planet: It has the structure of a normal planet (ours): The diagram is not to scale. Assume similar proportions of Crust:Mantle:Cores as the Earth. Is has a similar volume (close...

5 answers  ·  posted 9y ago by Tim‭  ·  last activity 4y ago by Tim‭

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Q&A Must all planets have a solid/liquid core?

At the moment it seems we have two different types of planet We have Rocky planets with a solid core that occupies most of the mass of the planet We have Gas Giants that contain a solid core but ...

5 answers  ·  posted 9y ago by Tim B‭  ·  last activity 4y ago by Tim B‭

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Q&A Habitable Planet in the L2 Lagrange Point of a Hot Jupiter

If orbiting in the L2 lagrange point of a large planet (doesn't actually have to be a hot Jupiter, just large enough to fully shadow the smaller planet), how close could you get to the host star be...

1 answer  ·  posted 4y ago by WillRoss1‭  ·  last activity 4y ago by WillRoss1‭