3 ms·
Depending on the spectrum of the star, I would be concerned about non-visible radiation doses when in close proximity to the star. IANA astrophysicist, though.
by verandaguy 10y ago
Depending on the spectrum of the star, I would be concerned about non-visible radiation doses when in close proximity to the star.
IANA astrophysicist, though.
Actually, adding onto that, I'm wondering whether orbits this tight would result in a noticeable centripetal force -- that is, that you'd feel lighter on the night side of the planet than on the day side.
- mturmon 10y agoGood point, this is in TFA: "Although at least some fraction of each planet could harbor liquid water, it doesn't necessarily follow that they are habitable. TRAPPIST-1 emits about the same amount of X-ray and ultraviolet radiation as the Sun does, which could chew away at any protective atmospheres the planets might have." But it's complicated. For example, apparently the energetic radiation can help by stripping away the H/He atmosphere. For more, see: https://academic.oup.com/mnrasl/article-lookup/doi/10.1093/mnrasl/slw192 https://academic.oup.com/mnrasl/article-lookup/doi/10.1093/m...