User zabop

26 votes

1 answer

5k views

Is lithium considered a metal in astronomy?

asked Oct 27, 2020 at 10:56

12 votes

1 answer

226 views

How to measure mass of planets' core from orbit

asked Mar 13, 2021 at 15:44

6 votes

3 answers

2k views

Would we have spotted the ascent stage of Apollo 11's Eagle if it was still in orbit around the Moon?

asked Jul 17, 2021 at 12:37

5 votes

1 answer

159 views

Is a branch on HR diagram a line formed by stars in the same evolutionary phase, or the evolutionary track of an individual star?

asked May 28, 2021 at 19:17

4 votes

1 answer

119 views

Deriving the first moment of Collisionless Boltzmann Equation in Spherical Polar Coordinates

asked Jan 1, 2021 at 14:47

4 votes

1 answer

171 views

How galactic density falls using Oort constants

asked May 7, 2021 at 16:23

3 votes

1 answer

181 views

Will the Sun cool only after it left main sequence?

asked May 28, 2021 at 19:00

3 votes

0 answers

153 views

Are red clump stars horizontal branch stars?

asked May 28, 2021 at 19:53

3 votes

1 answer

129 views

What are hot and cold stellar systems?

asked Oct 11, 2020 at 13:09

2 votes

1 answer

61 views

Why do heavy mid-sized stars become more luminous as they leave the subgiant branch entering the red-giant branch?

asked May 29, 2021 at 10:43

2 votes

2 answers

257 views

How can red supergiants be cooler than dwarfs of the same spectral type?

asked Oct 27, 2020 at 22:31

1 vote

0 answers

47 views

Why do in general stars twinkle and planets don't? [duplicate]

asked Oct 29, 2020 at 21:30

1 vote

0 answers

61 views

What is the wiggle in the AGB branch?

asked May 29, 2021 at 15:29

1 vote

1 answer

94 views

Does the CNO cycle play a role in stopping the collapse of solar mass stars after they have run out of Hydrogen?

asked May 29, 2021 at 8:57

1 vote

1 answer

71 views

Estimating Sun luminosity from first principles

asked Feb 3, 2021 at 20:39

1 vote

1 answer

90 views

Is the mass of Kuiper belt dominated by large objects?

asked Feb 5, 2021 at 19:30

0 votes

1 answer

119 views

"Early" and "late" nomenclature regarding O, B & K, M stars

asked Nov 10, 2020 at 12:28

0 votes

1 answer

48 views

How to tell where a meteorite came from

asked Mar 13, 2021 at 17:53

0 votes

0 answers

31 views

What is sonic transition of an astrophysical fluid?

asked Mar 14, 2021 at 15:55

0 votes

1 answer

38 views

Poisson's equation-like formula in axis-symmetric Galactic potential in terms of Oort constants

asked May 5, 2021 at 15:16

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20 Questions

Is lithium considered a metal in astronomy?

How to measure mass of planets' core from orbit

Would we have spotted the ascent stage of Apollo 11's Eagle if it was still in orbit around the Moon?

Is a branch on HR diagram a line formed by stars in the same evolutionary phase, or the evolutionary track of an individual star?

Deriving the first moment of Collisionless Boltzmann Equation in Spherical Polar Coordinates

How galactic density falls using Oort constants

Will the Sun cool only after it left main sequence?

Are red clump stars horizontal branch stars?

What are hot and cold stellar systems?

Why do heavy mid-sized stars become more luminous as they leave the subgiant branch entering the red-giant branch?

How can red supergiants be cooler than dwarfs of the same spectral type?

Why do in general stars twinkle and planets don't? [duplicate]

What is the wiggle in the AGB branch?

Does the CNO cycle play a role in stopping the collapse of solar mass stars after they have run out of Hydrogen?

Estimating Sun luminosity from first principles

Is the mass of Kuiper belt dominated by large objects?

"Early" and "late" nomenclature regarding O, B & K, M stars

How to tell where a meteorite came from

What is sonic transition of an astrophysical fluid?

Poisson's equation-like formula in axis-symmetric Galactic potential in terms of Oort constants