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Questions tagged [hypothetical]

Questions about hypothetical objects or concepts in astronomy (including wormholes, white holes and quasi-stars). This tag is not for counterfactuals or "what-if" questions.

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What will be the temperature on Earth when Sun finishes its main sequence?

We know that presently Sun is 4.5 billion years into its main sequence. It has another 5 billion years before it enters the Red Giant phase. We also know that Sun's luminosity increases by 10% every ...
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Could two planetesimals orbit a dense object and share an atmosphere?

Could two objects be caught into an orbit around some kind of dense object, perhaps a rogue planet. Could they share an atmosphere.
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Hypothetically, would we be able to see the moon from Saturn's North Pole?

Hypothetically speaking, if Saturn had a solid surface that we could stand on, would we be able to see our Moon from the North Pole of Saturn? Would the rings of Saturn obstruct the view?
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1answer
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Interstellar bodies

Could a sun emit a large piece of matter that escapes it's gravity, and might eventually reach another solar system? And what would be the effect if a planet sized object reached our solar system and ...
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1answer
169 views

How could lithium burning take place in a quasi-star?

According to Begelman et al. (2008), one of the most distinguishing features of the hypothetical quasi-star is that it's supported by radiation pressure from the accretion disk of the black hole in ...