Astronomy Stack Exchange

-1 votes

0 answers

19 views

Meteorite or earth rock?

Chris Gonzalez

1

asked 2 hours ago

-1 votes

0 answers

23 views

Why isn't Epsilon Indi in HabCat

Jetpack

107

modified 9 hours ago

0 votes

1 answer

119 views

Why isn't Tau Ceti in the HabCat?

Jetpack

107

modified 13 hours ago

-1 votes

2 answers

81 views

Are Old Methusalah-type Stars in Faraway Galaxies?

mdswartz

3

modified yesterday

5 votes

4 answers

637 views

Cepheids/supernova vs redshift (for estimating distances)

adsp42

689

modified yesterday

2 votes

1 answer

135 views

Universe expansion not accelerating?

Allure

5,282

modified 2 days ago

1 vote

2 answers

105 views

In Which Locations Would It Be Possible To Have 4 “Constant” Constellations?

James K

136k

modified 2 days ago

4 votes

0 answers

59 views

What is the role of the mercury-filled tubes in the occulting mechanism on Zeiss planetarium projectors

Theo H

195

asked Nov 27 at 21:47

6 votes

2 answers

771 views

Find Extreme UV data source for the Sun

Roy Smart

2,357

answered Nov 27 at 18:29

2 votes

1 answer

88 views

Could cometary non-gravitational acceleration be linked to surface cohesion transitions?

Andi Pangerang Hasanuddin

368

answered Nov 27 at 9:38

1 vote

2 answers

145 views

Help on calculating the sun's horizontal coordinates

Andi Pangerang Hasanuddin

368

answered Nov 27 at 7:49

1 vote

2 answers

3k views

Why the moon is blinding me right now?

David Malinowski

1

modified Nov 27 at 0:39

1 vote

2 answers

88 views

Anisotropic to isotropic term ratio of the radiation field in the LTE plane parallel atmosphere approximation - Choudhuri's textbook

Thomas

3,664

modified Nov 26 at 23:24

0 votes

0 answers

78 views

Can a black hole be opened by other black holes? [duplicate]

Benson

117

asked Nov 26 at 3:28

0 votes

2 answers

155 views

When we look towards the galactic centre is the plane of the sky perpendicular to galactic plane?

James K

136k

modified Nov 25 at 21:46

1 vote

2 answers

191 views

Assuming they exist, what would be the strongest observational evidence of quark stars?

H-QM-W

21

modified Nov 25 at 12:09

1 vote

1 answer

66 views

How would one take a simulated Gaussian function absorption line and match it to a given spectrograph resolution?

user77921

11

modified Nov 21 at 15:25

0 votes

0 answers

40 views

Light Curve to SED - ZTF

Andi Pangerang Hasanuddin

368

modified Nov 20 at 5:40

-1 votes

2 answers

203 views

What is the cutoff between a rocky planet and a gas giant/ ice giant [duplicate]

Darth Pseudonym

8,136

modified Nov 19 at 20:26

6 votes

1 answer

216 views

Could an exoplanet's atmosphere have significant quantities of heavy noble gases?

Oscar Lanzi

1,534

modified Nov 19 at 19:31

6 votes

2 answers

1k views

Interstellar Dust properties

Elements In Space

211

modified Nov 19 at 15:53

8 votes

3 answers

1k views

Why do neutron stars collide instead of just revolving around each other like planets revolve around the Sun?

Peter - Reinstate Monica

1,074

modified Nov 18 at 16:30

1 vote

1 answer

335 views

How come the universe isn't a black hole?

CommunityBot

1

modified Nov 18 at 13:03

3 votes

2 answers

345 views

By convention, when observing an exoplanet, is the observer's line of sight (on Earth) perpendicular to the plane of sky?

adsp42

689

answered Nov 18 at 12:51

1 vote

1 answer

112 views

Why are aurora viewed from latitudes closer to the equator redder compared to aurorae viewed from more polar latitudes, which are usually green?

Woody

1,747

modified Nov 17 at 3:11

6 votes

4 answers

2k views

Would it be possible for a moon to be impacted, making it spiral into the planet? [duplicate]

Lenora

77

modified Nov 16 at 22:17

2 votes

3 answers

1k views

Calculation of Julian day is off for negative dates

PM 2Ring

18k

modified Nov 16 at 16:59

8 votes

1 answer

1k views

How do neutron/white dwarf stars get close enough to merge?

Eric Jensen

5,168

answered Nov 16 at 2:27

0 votes

1 answer

133 views

Require sine waves of lunar motion from 1851 to 2025 fitting to earth phenomena for modeling purposes

Octomanny

11

modified Nov 15 at 20:46

47 votes

2 answers

51k views

How does a neutron star collapse into a black hole?

MC9000

101

modified Nov 15 at 16:54

3 votes

1 answer

581 views

What is the thickness of black holes event horizon?

Miss Understands

1

modified Nov 15 at 15:06

7 votes

2 answers

3k views

Why aren't there eclipses every month when the moon's orbit is aligned with the ecliptic as a result of lunar precession?

PM 2Ring

18k

modified Nov 15 at 7:30

0 votes

1 answer

193 views

Flat curvature and decelerated expansion in wCDM models

Sten

5,614

modified Nov 13 at 18:18

3 votes

1 answer

282 views

Calculation of twilight sky surface brightness based on object's apparent magnitude

Andi Pangerang Hasanuddin

368

modified Nov 12 at 14:21

0 votes

1 answer

80 views

What is this time dilation adjustment that has to be done for high-z objects? [duplicate]

pela

41.1k

modified Nov 12 at 14:19

4 votes

2 answers

364 views

Why is Io's volcanism chemically so different from Earth's?

Oscar Lanzi

1,534

modified Nov 12 at 11:33

9 votes

1 answer

2k views

Where are the foci of Earth's orbit?

PM 2Ring

18k

modified Nov 12 at 10:53

0 votes

1 answer

155 views

Detecting the Extended Nature of objects via Orbital Dynamics?

CommunityBot

1

modified Nov 11 at 0:01

4 votes

1 answer

2k views

What are the so called clouds of dust and gas made of?

Elements In Space

211

modified Nov 10 at 16:06

7 votes

1 answer

302 views

How could a new cosmological model solve the hubble tension?

Johann Pascher

1

modified Nov 10 at 11:00

4 votes

0 answers

114 views

What is meant by the 'King core radius'?

Nilay Ghosh

5,524

modified Nov 10 at 1:40

5 votes

3 answers

1k views

Why aren't there green stars? [duplicate]

pela

41.1k

modified Nov 9 at 21:16

1 vote

1 answer

313 views

Distance Moon-Earth

CommunityBot

1

modified Nov 9 at 13:04

0 votes

1 answer

142 views

How can I calculate the length of a solar eclipse on a gas giant's moon?

CommunityBot

1

modified Nov 9 at 6:04

3 votes

2 answers

629 views

Could a moon be passed from one planet's orbit to another?

CommunityBot

1

modified Nov 7 at 14:35

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