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2080
  • Member for 4 years, 3 months
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21 votes
2 answers
3k views

Does seeing a gravitationally lensed/magnified galaxy imply that they could also see us as well?

18 votes
3 answers
3k views

Non-anthropic, universal units of time for active SETI

17 votes
4 answers
5k views

If the Sun was replaced with a sun-mass black hole, would it be visually detectable?

15 votes
1 answer
757 views

Has a magnetic field flip of a distant star ever been measured?

15 votes
0 answers
243 views

What 1° x 1° region is the optically darkest patch in the sky?

12 votes
2 answers
757 views

How has the resolution of astronomical spectrographs improved over time?

11 votes
3 answers
2k views

Can earth grazers skip on the atmosphere more than once?

9 votes
2 answers
2k views

Is it possible to observe strong gravitational lensing with amateur telescopes?

8 votes
1 answer
313 views

What are the bright dots in some galaxies in the first JWST image?

7 votes
2 answers
771 views

How can non-earth-orbiting satellite coordinates be obtained by amateurs?

6 votes
0 answers
124 views

Would it be possible to create a telescope from a hanging reflective cloth?

6 votes
1 answer
180 views

Do solar flares have a noticeable effect on asteroid orbits?

5 votes
2 answers
260 views

What programs do astronomers use to ensure their observatory control computer has accurate time?

5 votes
4 answers
307 views

If two fast asteroids collided, would the temperature and pressure be high enough to cause nuclear fusion?

5 votes
1 answer
176 views

How would images with an overextended focal length look like?

4 votes
1 answer
912 views

In astronomical interferometry, what values do the points in the uv-plane have?

4 votes
1 answer
240 views

Will the lunar gateway be visible for ground based (amateur) telescopes?

4 votes
2 answers
431 views

Feasibility of detecting earth-like exoplanets with amateur telescopes

3 votes
1 answer
157 views

Do telescopes exist that reflect the incoming light more than three times along their length?

3 votes
1 answer
207 views

What is the maximum radius of an Einstein ring?

2 votes
2 answers
123 views

In radio astronomy, do two dimensional sensors exist?

2 votes
1 answer
633 views

What is the difference between mounted and unmounted filters?

2 votes
1 answer
130 views

Do triple or more times reflecting telescopes exist?

2 votes
0 answers
86 views

Probability of exoplanet transit

2 votes
0 answers
64 views

It is possible to estimate an exoplanets' orbital period from just one transit?

1 vote
0 answers
57 views

Software to create exoplanet transit lightcurves of all stars in a series of images?

1 vote
0 answers
44 views

Best resource for exoplanet statistics?