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1 vote
0 answers
44 views

Can [Fe/H] be significantly skewed for a star by infalling dust, etc. to make this value unreliable in estimating main sequence lifetime given mass?

3 votes
1 answer
68 views

Which Public Datasets Are Best for Finding Long Period Transiting Exoplanets?

26 votes
2 answers
5k views

What exactly is the "paradox" in Olbers’ paradox?

1 vote
0 answers
127 views

Can a star form around an existing object?

2 votes
1 answer
989 views

Why is the Lunar Node in a daily motion?

3 votes
1 answer
75 views

Are these filters reasonable for selecting promising host stars for exoplanet searches in TESS data?

55 votes
6 answers
10k views

Is the Solar core "hard"?

13 votes
4 answers
2k views

Why can't lunar regolith support plant growth in the same way as Earth's soil?

3 votes
2 answers
227 views

If mass kept being removed from a red dwarf, at what mass would it stop fusing?

16 votes
7 answers
4k views

Why there are no terrestrial planets with a subsurface ocean?

2 votes
2 answers
794 views

How common are there planets with significant share of oxygen in atmosphere?

2 votes
0 answers
133 views

Measuring the Mars Earth Parallax

4 votes
0 answers
208 views

At what distance from Sagittarius A* would an astronaut receive a lethal dose of radiation?

8 votes
1 answer
630 views

Why aren't there sulfuric acid seas on Venus?

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