Questions tagged [goldilocks-zone]

Questions about the region of space around a star where a planet can sustain life.

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Are there any planets or objects orbiting in Goldilocks zone?

I was wondering whether there were any objects that orbit the "goldilocks zone" besides our home planet earth, and how the goldilocks zone of our solar system is defined.
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How much could Earth's orbit shift without causing an ecological catastrophe?

Seeing the news about A/2017 U1 made me wonder what would happen if a similar object, but with a mass close to Earth's, had a close call with Earth. Could it shift Earth's orbit enough to quickly and ...
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What apparent sizes of the sun an Earth like planet can have?

What is the smallest and largest sun an Earth like planet could have in its sky? What kinds of stars are those? I saw this video and thought, yeah, some of those stars are really big in absolute ...
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Would dark energy save the earth for a while as the sun heats up?

Would the expansion of space (e.g. dark energy) move the earth further away from the sun over time, possibly saving us for perhaps a few billion years as the sun heats up? Scientists now tend to ...