Questions tagged [astronomy]
For questions related to planets, moons, stars and other celestial objects, and their motion on the sky.
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Astrology while living on Mars [closed]
Astrology has been done on Earth for centuries, based on the position of the planets with respect to the constellations.
Has anyone given thought to what astrology (whether you believe in it or not) ...
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Can a planet have a warm, tropical climate both at the poles and at the equator?
I am trying to create the perfect planet for life. It will mainly consist of shallow seas/oceans with archipelagos spread throughout the globe. The islands are the same size as New Guinea on average. ...
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How do you tell if you're in a nebula?
Specifically, how does a civilization tell if their home planet - on which they have always resided - is orbiting a star that is inside a nebula? The way we know that we're not in a nebula is because ...
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Would an industrial level society be able to visually identify orbital debris from a destroyed mega structure?
My world is a very distant post apocalyptic society on earth after the destruction of some orbital mega structure around the planet - like an orbital ring or something. The current civilization(s) on ...
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What would happen to the sky colour if SO2 made up 95% of the atmosphere? [duplicate]
Because of the Rayleigh scattering phenomenon, I'm interested in how the G2V-type star light would interact with this composition, especially how it would change the colour of the sky. What kinds of ...
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Given the following planetary conditions, what would be the exact length of a year?
List of conditions:
it's an earth-size planet
it's located in a binary star system, where both suns have the same size and mass
the summed up mass of both suns is equivalent to that of our sun
yes, ...
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Help calculating the apparent size of moons in orbit [duplicate]
I have three moons I am contending with for this planet. There exact size and mass I am still working out. Right now, I am trying to find an equation that will let me know how big a moon would appear ...
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How could you have a Super Saturn (J1407b) like planet with rings in a system with life?
I would like my world's solar system to have a super saturn (J1407b) like planet with ring system for astrological reasons. How could I have this during a "contemporary age" (Cenozoic ...
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Could Jupiter-like planet be able to radiate energy to sustain life on satellite?
I remember being taught about Jupiter being believed to be a failed Sun. I also am aware that Jupiter releases energy like the Sun. I am sure some of this is in relation to the sun as well. But due to ...
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Why wouldn't the world have advanced warning of a significant asteroid/comet strike?
Suddenly, the news warn of a civilization-resetting asteroid/comet about to hit the earth in hours. No-one knew a thing.
Why? Well, my research shows that such an event is extremely unlikely in any ...
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Soft-Science-Fiction: How could i make the radiation of this star be less lethal to life?
Im working on a project which is based on several worlds orbiting around a white star like Sirius.
Sure life won't form there like we know it on earth because these stars are too short lived and ...
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Climate on a Moon orbiting a primary in the habitable zone of a sunlike star
I created the following system (including a simulation in universe sandbox which seems stable):
Sun-like G-type star with same mass, density, radiation profile, diameter and luminosity as the Sun.
...
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Where would aurora borealis be visible if the earth was rotated to move its axis?
The magnetic north pole, geographic north pole (centre of the axis of rotation), and solar-system-north are all approximately aligned, and aurora borealis is visible at the north and south poles ...
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What are the climatic consequences of existing on a planet with a dense and fairly cold atmosphere?
I am making a non-habitable planet (Name: Xoo-akedar) for my solar system. Despite being close to the star (see characteristics below), it has a dense atmosphere that prevents the heat from the star ...
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Where can I find data on typical size and temperature of a star given mass and age? [duplicate]
I am building a solar system and need to investigate my options. I need data to answer questions like "if a star was X solar masses and Y million years old, how large and hot would it be?" ...
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