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Questions tagged [solar-system]

For questions regarding a star and the area comprising its gravitational dominance. While they are not part of its technical definition, it colloquially refers to the planets, moons, asteroids and other bodies orbiting the star.

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What would be the impact on Titan, Saturn and the Solar system if aliens harvested as much hydrocarbons as possible from Saturn's moon?

The scenario Many science fiction novels are concerned with aliens visiting Earth, but what if aliens have no interest in Earth at all and yet they arrive at the Solar system for the sole purpose of ...
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Plausible reason for Earth not be able to get updates about terraforming on Mars?

I’ve been working on a story where terraforming robots are sent to another world and the colonists come along later. Originally, I had the new world be extrasolar, but for other plot reasons, I’m ...
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How do you non-catastrophically reduce the mass of the Sun by half?

In my previous question, I asked how much mass the Sun would have to lose in order for Saturn's orbital velocity to be its escape velocity. The answer proved to be somewhat unexpected - when the Sun ...
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Would turning the planet Mercury into a giant mirror be a good way to heat the outer solar system?

If you could deflect most of the light off planet Mercury and to a focused point in the sky, for example, could you heat up a planet like Neptune? You could also start this process at the poles where ...
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Effects of Hot Jupiters on habitable planets

Essentially, I'm designing a solar system for form of alien life. For the sake of ease, the star is roughly similar to the Sun, and the habitable planet follows an orbit anywhere between Earth and ...
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Is it possible for a naturally occuring star system to have 120 planets?

In my book series (link here), there is a star system at the northern edge of the galaxy called the Ryu system. I am planning for this star system to be huge, encompassing 120 planets. The vast ...
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1answer
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Radiation Levels and Effects on Planet with 27 Suns

Other posts from this thread will be posted here: How to make an Earth with 27 suns work (Closed as a duplicate of the follow up, Attempt Two) How To Make an Earth with 27 Suns Work, Attempt Two: ...
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Which side of a tidally locked moon experiences higher radiation?

Looking most specifically regarding the moons around Saturn, Jupiter, and Uranus. I've been unable to get a concrete answer on this through various sources. I've actually read several articles briefly ...
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Tiny galaxies with exoplanets

Segue 2 is a galaxy with only about 1000 stars and is 111 light years in radius. It has a light output only 900 times that of our sun. (This is a real galaxy in our universe) However, I want my ...
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How big of a coronal mass ejection from the sun do I need to destroy all the electrical equipment on earth

So the background is simple: in the modern day a CME (coronal mass ejection, a solar flare that has escaped the sun) hits the Earth and destroyed all the electrical equipment causing planes to crash ...
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2answers
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How many planets should I have in my planetary system?

I am building a planetary system, but I always thought how many planets should I have in this system. When you look at our solar system there are 8 planets. Other exoplanetary systems can have up to ...
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The Nightfall / Kalgash System

"Nightfall" by Isaac Asimov (you can hear the story here on escapepod, if you need it) postulates a planet in a multi-sun system. The orbital mechanics of the 6 suns result in all of the sides of the ...
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Stationary trinary system

I am creating a world in which a civilization has achieved advanced spaceflight and has begone colonizing other planets in their solar system that is similar to ours, but with more planets. However, ...
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Can two stars orbit each other but each have their own planets in stable orbits?

I'm aware that 'tatooine' worlds don't make good habits for planets, normally. From what I've read, either a planet has to orbit one star really closely, or orbit both stars from a really long ...
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Silly orbits - can an orbit be both stable and interplanetary?

In our story's universe, a solar system is hand-crafted by a deity with seven smallish bodies working in a way that I can only describe as Lagrangian Points, where all planets have the same orbital ...
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1answer
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Can I see my secondary star?

I have a binary star system and have come up with some stats for it. My primary star is an F-type, with a mass of 1.3 sols and a luminosity of 2.197 sols. My secondary star is a K-type, with a mass ...
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Artificial water planet and shell world combo

I’ve been trying to create a water planet with certain aspects. I wanted it to have a breathable atmosphere and to be a microgravity environment. I’m developing humanoid characters that can breathe ...
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2answers
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How to keep this artificial water planet from evaporating or freezing?

Piggybacking on this question: Could soft matter infused with nano or pico sized magnets be used to clump together so that we could create environments with it? ...So we have a planet that has lower ...
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4answers
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Is there a habitability zone between the primary and secondary stars of a binary star system?

Is there a habitability zone between the primary and secondary stars in a binary star system for a planet orbiting only the primary star at a distance less than that of the secondary star and, if so, ...
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2answers
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How do I design the solar transit of a hot Jupiter?

BACKGROUND The world I'm designing currently has a gas giant of the type known as a hot Jupiter orbiting close to the sun and causing solar flares. I would like the inhabitants of my Earth-like world ...
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4answers
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How Many Earth-Like Worlds Could Be Made Using Only Material From The Solar System?

Assuming that some future civilization of hyper-advanced humans, or aliens for that matter, had the technology to reshape the solar system so that there were several habitable planets the rough size ...
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1answer
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How Many Planets Can Safely Share A Single Orbit?

Bryan Konietzko (you know, one of the guys being Avatar The Last Airbender and The Legend of Korra), is working on a new project called Threadworlds, which takes place in a solar system that has 5 ...
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4answers
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Could a solar flare create terrestrial areas of background radiation?

Inspired by this question from yesterday. Solar flares can give off a large amount of radiation, but on Earth this is typically absorbed before it reaches anywhere but the poles, and even then only ...
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2answers
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Can a Large Planet Orbit a Smaller Planet?

Let me clarify on the title, because this is important. In recent years, people have been feeling less comfortable calling the only natural satellite orbiting Earth a moon. It may not be the largest ...
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10answers
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This sword is forged from meteorite iron - but how is that any good?

You know the common trope in fantasy. Meteorite iron is amazing. My armor is made of sky iron, made for me. A bear's armor is his soul, just as your daemon is your soul. You might as well take him ...
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Could two planets follow the same orbit and never “see” each other?

Imagine two identical planets planet A and planet B, orbiting the same star. Is it possible that these two planets follow the exact same "route" as they orbit their sun, but are just distant enough ...
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1answer
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Solar flare prevention

Would it be possible to prevent or divert a massive solar flare (0.035 watts per meter^2 1-8 Angstrom Wavelength or approximately X30 on the solar flare scale https://www.spaceweatherlive.com/en/help/...
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1answer
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How would a colliding binary affect its planetary system?

The scenario is based on the fact that a tight binary of two neutron stars does not hold for long: The two bodies lose energy in the form of gravitational waves and they spiral towards each other and ...
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3answers
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Is my Solar System scientifcally possible?

I'm heavily ignorant when it comes to mathematics and just science in general, but I have thought of four habitable planets, all of them revolving around a K-type sun. They're all colonized by humans, ...
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4answers
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Could more Earth-like planets exist in our Sun's “goldilocks” zone?

These planets would be similar in size to Earth. Mars and Venus don't need to exist in this scenario. So how many Earth-like worlds can be squeezed into the sun's "goldilocks" zone? Mars and Venus ...
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7answers
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How short can Milankovitch Cycles be on a world with a stable orbit?

Okay so there's a project I've been thinking about for a long time wherein humans colonise a world where the climate appears warm and benign only to discover that the local climate oscillates from ...
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1answer
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Need help / advice building a habitable body for a book

Information and Context I'm working on a story, based 220 or so years in the future in a hard-science universe (where a quantum jump drive has been invented). I was wondering if anyone could give me ...
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3answers
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How could Earth be propelled into a further orbit?

In my story, technologically advanced aliens create a "white hole" at the center of the sun that constantly spits out matter (hydrogen) from a parallel universe, increasing the star's mass quickly. ...
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2answers
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Viability of ballistically propelled “traveling salesman” space stations

I'm interested in the viability of the following scheme for (relatively) fast space commerce within the Solar System: have a fleet of space stations essentially built around a long linear accelerator....
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2answers
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Do stars in a binary star system fall along the ecliptic?

I am wondering about Tatooine, and was reading about binary systems here, which provided a lot of good basic food for thought. My specific question is not addressed at that link, and so I pose it here....
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Device close to sun to focus energy to satellite in Earth Orbit for energy generation

The light from the sun is dissipated in a sphere, so there is a squared relationship between the distance from the sun. Would it be possible to place either a lens or solar collectors with a laser to ...
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Why might a valued mineral be only found on one planet?

According to an answer to a previous question, it would be comparatively impractical to conduct mining on a rocky planet when there are moons, asteroids, comets, etc. that have smaller mass, so much ...
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4answers
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Is my solar system even remotely plausible?

I've sketched out a solar system for my science-fantasy setting. In the interest of hand-waving only when necessary, I'm reality checking my idea to see what needs to be tweaked or changed outright, ...
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1answer
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Surface temperature when outside solar system

Suppose Earth has drifted away from solar system for some reason. It has been 320 years since drifting started. For almost 250 years, it is farther away from Neptune. - How cold would the surface ...
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4answers
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Where would the Sun and Moon be within a flat Earth world?

Where would the Sun and Moon be on a flat Earth? Imagine a world similar to the flat domed depiction of the Earth with a Biblical Firmament all around it. If you don't know what that is, let me ...
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2answers
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How to calculate the light received by a planet during a binary star eclipse?

I'm building up a spreadsheet on worldbuilding (Stars, Planets, Moons etc.) and i'm struggling to find an equation, or a group of equations to help me figure out the light received by a planet ...
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1answer
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Calculating the orbits of binary stars around their barycentre

I've been building a world, partly for test reasons (making sure my spreadsheet works, and so i know what i need to add to it) and partly for fun, but for calender reasons i need to know the orbital ...
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Orbital configuration for a stellar beacon

Some research papers, such as Arnold 2005, has investigated the possibility of using artificial megastructures transit signatures as long-range, long-lived and low-maintenance signals of unambiguously ...
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Propulsion for destinations within the solar system that only takes hours (or less), not days, or months? [closed]

I'm looking for a pseudoscience, hand waving answer. I don't need fast travel to other stars, I just need something that can zip around within solar systems (even ones larger than our own). This would ...
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2answers
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How long is a solar-solar eclipse in a Binary Star System?

Preamble: I have read this thread on single gravity well binary system eclipses. And this one on binary system views. And this one on a gas giant's moon's solar eclipse. And (now) this one on seasons ...
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Can our orbit support a second planetary mass

If for a 'magic' Reason a second planetary mass of roughly equal proportions to earth appeared in the same orbit as earth. Is there any way that both masses could continue to orbit and remain in the ...
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How much available matter in the solar system?

Assuming all the energy in our solar system (solar energy, heat, etc) was converted into matter, and then using all the matter in the solar system, how big of a city sphere could be built? What I ...
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1answer
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How big a population can the solar system support considering only power and living space?

The average power utilization per person is 1 Megawatt. The average living space is 1000 cubic meters per person. The average total mass in use by a person is 1000 tons. Assumptions Solar power ...
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What's the largest body in the solar system that you could destroy without endangering humanity?

You're an alien that really likes pyrotechnics. Nothing that goes boom on your home planet (in a safe and responsible manner) satisfies you any more. Why not blow up a planet and see what that's ...
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Initial conditions for a fluorine hellscape

I'm curious what it would take to get a planet with so much free fluorine that you can have an atmosphere of predominantly or purely fluorine. I realize how improbable a planet like this is, so I'm ...