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6 votes
1 answer
609 views

Is it possible to have a planet with earth-like mass but double the atmospheric pressure?

I'm no scientist and my poor brain box is on its last legs; I was wondering if any of you smart beans out there would be able to help me figure this out? Here are the specs of my system; Kereiol is a ...
MissMermaid's user avatar
23 votes
6 answers
2k views

Scientific explanation for a exceptionally bright night sky

On an alternative Earth live the people of Tcelonia. One of their founding myths goes that, in the dawn of times, when they were under the menace of being attacked by an enemy population, for an ...
L.Dutch's user avatar
  • 292k
5 votes
2 answers
205 views

Naturally maintaining an atmosphere being stripped by a brown dwarf‘s magnetosphere

In this scenario we have a brown dwarf with a powerful magnetic dynamo from metallic hydrogen. The magnetic field is modeled after Jupiter’s but just three orders of magnitude more powerful. ...
Hippeus_Lancer's user avatar
3 votes
3 answers
266 views

Could a comet cool down global tempatures? [duplicate]

In warlords I wanted Terrans to have a fad of big (synthetic) fur jackets, but I didn't want too have everyone running around in winter clothing for no good reason so the solution my mind instantly ...
Celestial Dragon Emperor's user avatar
1 vote
2 answers
234 views

What atmospheric composition do I need to sustain Earth-like temperatures at my planet's orbital distance; how close should my asteroid belt be?

I need to heat my planet and I've decided that the two most plausible and controllable ways to do so are by increasing the amount of bombardment by meteoroids from a nearby asteroid belt, and by ...
Rúnatál Davino's user avatar
5 votes
3 answers
826 views

Proxima Centauri and tidally locked planets

Proxima Centauri may have a rocky, earth like planet close to its dim sun. Tidally locked, the sun facing side may have a temperature up to 30 degrees Celsius and a dark side of -30 C. This would make ...
Isaac Kotlicky's user avatar
11 votes
4 answers
2k views

Would living underground during an impact winter be ideal?

I was looking at these two questions: Expanding Occupied Underground Habitations Safely Does Living without access to Sunlight have known Physical/Psychological effects? And in a story I'm writing, ...
KaguraRap's user avatar
  • 1,325