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NeutronStar
  • Member for 9 years
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20 votes
6 answers
13k views

What does forward modeling mean?

11 votes
2 answers
542 views

Recommendation for introductory cosmology text

10 votes
3 answers
2k views

Red Moon a Characteristic of all Total Lunar Eclipses?

9 votes
1 answer
3k views

What can be seen with a 4.5" telescope

9 votes
2 answers
334 views

How did the Mars satellites "take cover" from the recent comet flyby?

8 votes
2 answers
9k views

Difference between quasar and Active Galactic Nuclei?

8 votes
1 answer
413 views

What is the brightest star (relative magnitude) in M31?

7 votes
1 answer
871 views

Why does higher surface gravity broaden spectral lines?

7 votes
1 answer
328 views

Should I drop source shot noise from the SNR calculation when all I care about is detection (not photometric precision)?

5 votes
1 answer
66 views

How many horizontal branch stars are within 2 kpc of the sun?

5 votes
0 answers
60 views

Estimates for how many Trans-Neptunian Objects there are [duplicate]

5 votes
1 answer
110 views

Determination of orbital elements for Trans-Neptunian Objects, how?

5 votes
1 answer
258 views

Total solar eclipse, supermoon, and spring equinox all happening at the same time: anything special about this?

5 votes
3 answers
1k views

Claim that 30-m class telescopes will have resolution far superior to Hubble: true?

5 votes
1 answer
2k views

What is the degree of ionization is the solar photosphere?

5 votes
3 answers
789 views

At what density does helium burning start in a star?

4 votes
1 answer
2k views

Look up current positions and velocities of solar system objects

4 votes
2 answers
4k views

Why are gas giants colored the way they are?

4 votes
2 answers
887 views

What is the difference between a dwarf spheroidal galaxy and a globular cluster?

4 votes
1 answer
450 views

Do galaxies have a preferred orientation?

4 votes
2 answers
694 views

Is dust extinction/reddening caused by Rayleigh scattering or some other physics phenomenon (or both)?

4 votes
1 answer
2k views

What is the largest hydrogen-burning star?

3 votes
1 answer
450 views

What is a Seyfert galaxy?

3 votes
1 answer
426 views

Why do pre-main sequence stars show lithium in absorption?

3 votes
1 answer
126 views

What is period doubling in a variable star?

3 votes
1 answer
722 views

How are stellar elemental abundances quoted?

3 votes
1 answer
542 views

Retrograde motion and Kuiper Belt Objects

3 votes
1 answer
128 views

What does "forward facing" mean for space telescopes?

3 votes
0 answers
81 views

Any pictures showing difference in moon between southern and northern observers?

3 votes
1 answer
655 views

What is meant by *topocentric* right ascension and declination?