User Natsfan

74 votes

Why does gas form a star instead of a black hole?

answered Jun 27, 2017 at 17:32

26 votes

How do we have photos of galaxies so far away?

answered Sep 10, 2017 at 19:31

26 votes

Is there an online planetarium where the observer is on another celestial body?

answered Apr 26, 2020 at 0:29

14 votes

Accepted

How do we not know what's in the Solar System?

answered Jun 25, 2017 at 2:44

12 votes

Accepted

Are there Earth rocks on Mars?

answered May 31, 2020 at 23:18

11 votes

Accepted

Why are telescope mirrors made of glass?

answered Nov 5, 2019 at 22:51

8 votes

Accepted

At what depth below the Sun's surface does the density reach that of water?

answered Jul 20, 2019 at 1:22

8 votes

Do most astronomers think that Andromeda will collide with Milky Way?

answered Jul 19, 2017 at 1:57

8 votes

Where can I find the positions of the planets, stars, moons, artificial satellites, etc. and visualize them?

answered Oct 1, 2017 at 16:57

7 votes

Accepted

How is the size of a distant planet determined?

answered Jun 5, 2019 at 22:48

6 votes

Software for simulating a night sky

answered Nov 3, 2017 at 23:39

6 votes

Accepted

Why are stars still distant from one another?

answered Aug 2, 2020 at 22:01

5 votes

If I want to learn about astrophysics, should I study up on mathematics?

answered Oct 21, 2017 at 23:16

5 votes

Accepted

What contributes the most to the seasonal temperature variation?

answered Sep 16, 2017 at 1:29

5 votes

Has great eyesight been necessary for astronomers?

answered Dec 29, 2019 at 19:15

4 votes

Does the Lagrange L1 point have a 'size'?

answered Sep 25, 2019 at 20:40

4 votes

Largest body in the solar system that a baseball thrown by a professional pitcher could escape

answered Feb 21, 2020 at 17:18

4 votes

Why are nearby stars like Proxima Centauri and Barnard's star not visible to the naked eye?

answered Aug 22, 2017 at 4:30

4 votes

Star map, where?

answered Oct 14, 2017 at 2:56

4 votes

Is the sun any brighter during a solar eclipse

answered Aug 11, 2017 at 15:08

4 votes

Is there a Vela Nebula?

answered Nov 26, 2020 at 4:11

3 votes

Accepted

How to calculate shape of orbit when projected onto the plane of the ecliptic

answered Jul 8, 2020 at 19:43

3 votes

Stuck with SDSS data

answered Aug 12, 2017 at 14:09

3 votes

Is there any legitimacy to this report of planet nine being discovered by an amateur?

answered Aug 2, 2017 at 21:13

3 votes

Can electromagnetic waves be affected by gravity?

answered Jul 2, 2017 at 13:21

3 votes

What are the criteria for the classification of galaxies?

answered Jul 9, 2017 at 19:55

3 votes

Can someone explain this diagram showing the spectral type distribution of bright stars

answered Jun 16, 2017 at 14:28

3 votes

Accepted

How many wandering black holes are there in the milky way?

answered Aug 20, 2017 at 0:14

3 votes

How did Earth get here before gravitational waves?

answered Sep 27, 2017 at 18:10

3 votes

Accepted

Which celestial body's length of day is closest to that of Earth?

answered Feb 23, 2020 at 3:54

Stack Exchange Network

88 Answers

Why does gas form a star instead of a black hole?

How do we have photos of galaxies so far away?

Is there an online planetarium where the observer is on another celestial body?

How do we not know what's in the Solar System?

Are there Earth rocks on Mars?

Why are telescope mirrors made of glass?

At what depth below the Sun's surface does the density reach that of water?

Do most astronomers think that Andromeda will collide with Milky Way?

Where can I find the positions of the planets, stars, moons, artificial satellites, etc. and visualize them?

How is the size of a distant planet determined?

Software for simulating a night sky

Why are stars still distant from one another?

If I want to learn about astrophysics, should I study up on mathematics?

What contributes the most to the seasonal temperature variation?

Has great eyesight been necessary for astronomers?

Does the Lagrange L1 point have a 'size'?

Largest body in the solar system that a baseball thrown by a professional pitcher could escape

Why are nearby stars like Proxima Centauri and Barnard's star not visible to the naked eye?

Star map, where?

Is the sun any brighter during a solar eclipse

Is there a Vela Nebula?

How to calculate shape of orbit when projected onto the plane of the ecliptic

Stuck with SDSS data

Is there any legitimacy to this report of planet nine being discovered by an amateur?

Can electromagnetic waves be affected by gravity?

What are the criteria for the classification of galaxies?

Can someone explain this diagram showing the spectral type distribution of bright stars

How many wandering black holes are there in the milky way?

How did Earth get here before gravitational waves?

Which celestial body's length of day is closest to that of Earth?