What would be Earth if it orbited other stars?

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What would be Earth if it orbited other stars? Empty What would be Earth if it orbited other stars?

Post by Diakonov on 14th October 2016, 10:16 am

I used Space Engine as a base for this topic. How would be the color of the sky and plants on Earth if it orbited other types of stars? I'll show what I found using Space Engine. I also lowered a bit the ocean level on Earth.

Q (pulsar):

What would be Earth if it orbited other stars? Mkx7yb
What would be Earth if it orbited other stars? Xp7xao

O5V stars:

What would be Earth if it orbited other stars? 2gtbw2e
What would be Earth if it orbited other stars? 2609wns

B5V stars:

What would be Earth if it orbited other stars? 20rpz15
What would be Earth if it orbited other stars? 242v41e

A5V stars:

What would be Earth if it orbited other stars? 2q9ib0h
What would be Earth if it orbited other stars? 1zvvdcm

F5V stars:

What would be Earth if it orbited other stars? 316oyv7
What would be Earth if it orbited other stars? 200pusi

G5V stars:

What would be Earth if it orbited other stars? Oqccwi
What would be Earth if it orbited other stars? 300sgg1

K5V stars:

What would be Earth if it orbited other stars? A9wiv4
What would be Earth if it orbited other stars? 2e2h6yb

M0V stars:

What would be Earth if it orbited other stars? 2uny0io
What would be Earth if it orbited other stars? A5gcqw

M5V stars:

What would be Earth if it orbited other stars? 5ehjs2
What would be Earth if it orbited other stars? 2d4a39

M9V stars:

What would be Earth if it orbited other stars? 2q9z8d0
What would be Earth if it orbited other stars? 2iaznux

L5V brown dwarfs:

What would be Earth if it orbited other stars? Dfucya
What would be Earth if it orbited other stars? R1mw6r

T5V brown dwarfs:

What would be Earth if it orbited other stars? 2mos1ub
What would be Earth if it orbited other stars? 30w2wsx

Y5V brown dwarfs:

What would be Earth if it orbited other stars? 2uymwdu
What would be Earth if it orbited other stars? 8wm5b9

In some M stars the sky is still blue, but more pale. Below that type, the sky start to turn green, later yellow and finally red. The Earth sky in a M5V star is greenish. If Earth orbited around brown dwarfs, the day would really look very dark, so you can see night lights even in the dayside. As for the vegetation, looks like plants would use more infrared if illuminated by cooler stars. If Earth orbited the coolest stars, plants would be unable to produce oxygen, but would use infrared to produce some other gas (maybe NO2 or H2?)

Well, I believe this may be useful to understand the color of skies on planets orbiting other types of stars.

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What would be Earth if it orbited other stars? Empty Re: What would be Earth if it orbited other stars?

Post by Sirius_Alpha on 14th October 2016, 3:32 pm

My understanding, (and take it with a grain of salt because I'm really not an expert), is that if you're close enough to a star that its brightness matches what the sun's is, you wouldn't really notice any differences in colour until the mid-to-late M spectral type. Something about the eye being overwhelmed and rendering the star is brilliant white.

(I've also moved the thread into a more appropriate subforum).

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