this post was submitted on 27 Feb 2025
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Science Memes

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[–] [email protected] 17 points 16 hours ago* (last edited 16 hours ago) (2 children)

Less about size and more about size and relative distance. Think about being on Mercury and the entire sky is blazing sun - and yet it survives.

[–] [email protected] 5 points 14 hours ago (1 children)

on Mercury and the entire sky is blazing sun

I've never thought about this and holy shit

[–] [email protected] 10 points 13 hours ago* (last edited 13 hours ago)

That's not the case though. Sure the sun would seem bigger on mercury but it's not gonna fill the entire sky.

Edit: According to NASA the sun would appear 3 times bigger and 7 times brighter on mercury.

[–] [email protected] 3 points 13 hours ago (2 children)

I mean, nothing on Mercury survives. At night it's -170 degrees Celsius and +430 degrees at day.

[–] [email protected] 1 points 2 hours ago

Those are some mercurial tempera...tures

[–] [email protected] 2 points 6 hours ago

There was a time people thought Mercury would have some "twilight" acreage that was always at habitable temperatures. Then we learned that, while yes it is tidally locked with the Sun, it is locked in a 3:2 resonance so it does rotate with respect to the sun, and everywhere gets both scorched and frozen to uninhabitability.