Worldbuilding
Sean Raymond's user avatar
Sean Raymond's user avatar
Sean Raymond's user avatar
Sean Raymond
  • Member for 6 years, 10 months
  • Last seen more than a week ago
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About

American astrophysicist living in France. I also blog at planetplanet.net.

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All Questions Answers
Score Newest
answer
83
Can two adjacent, life-sustaining planets orbit a star such that they are rarely near each other?
Dec 12, 2017
answer
24
How critical is it for life that a planet remains within the habitable zone at all times?
Dec 14, 2017
answer
24
Why didn't we detect that exoplanet before?
Dec 5, 2017
answer
15
What would the effect be on Earth if Mars disappeared?
Aug 3, 2016
answer
14
What would the effect be on Earth if Mars disappeared?
Aug 3, 2016
answer
12
Can 3 planets rotate around each other like this?
Sep 1, 2016
answer
11
Is my Solar System scientifcally possible?
Dec 19, 2017
answer
10
An Eden-like moon orbits a barren terrestrial planet. Why is the planet barren while its moon is earthlike?
Aug 30, 2018
answer
10
Would life still be possible on Earth if its atmosphere suddenly became as dense as the Venusian?
Jul 5, 2016
answer
9
What would block a planet from seeing the stars?
Jun 27, 2016

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