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11 votes
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What would something as hot as the sun do to its surroundings on Earth?

Scale of the disaster: anectodical Sad. I love a good planet-shattering assumption as much as the next guy, but this won't do. I blame your lack of ambition. Yes, the surface of the sun is hot, but it'...
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8 votes

What if a portal is opened from The Surface of Lake Superior to The Surface of Kraken Mare on Titan?

You will partly drain Lake Superior into Kraken Mare. Until the ice mound plugs the portal. The atmospheric pressure on Titan is 150% that of Earth. https://en.wikipedia.org/wiki/Atmosphere_of_Titan ...
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6 votes
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Maximum size of an Earth-like planet that's as close to reality as possible

You really can't do it The criteria that are incompatible are: Larger Radius Similar Density / Similar elemental composition 1G gravity The volume of your planet will be given by the radius $\Large \...
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5 votes

Maximum size of an Earth-like planet that's as close to reality as possible

A Ring World Since naturally occurring is not on the list of requirements, I'm going to go ahead and say that a ring world is your maximum size. A ring world is a megastructure built around a star (...
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3 votes

Maximum size of an Earth-like planet that's as close to reality as possible

As you increase the size of Earth as it is, you increase its mass, thereby increasing its surface gravity. You would need to have a core less massive than current Earth's to allow for a larger Earth ...
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