uhoh's user avatar
uhoh's user avatar
uhoh's user avatar
uhoh
  • Member for 8 years, 3 months
  • Last seen this week
  • Taipei, Earth
31 votes
1 answer
3k views

Are binary neutron star mergers needed to explain the abundance of gold?

29 votes
1 answer
3k views

When will the number of stars be a maximum?

29 votes
4 answers
3k views

Why did they decide to hit Dimorphos in the retrograde direction rather than prograde; was it a "coin-toss" or were there implications for observing?

28 votes
2 answers
4k views

Are we really star-stuff from the interior of collapsing stars?

25 votes
4 answers
4k views

Are there any double stars that I can actually see orbit each other?

25 votes
3 answers
6k views

What (the heck) is a Super Worm Equinox Moon?

23 votes
3 answers
6k views

Help understanding this unsettling image of Titan, Epimetheus, and Saturn's rings?

22 votes
1 answer
3k views

Does the recent news of "ten times more galaxies" imply that there is correspondingly less dark matter?

20 votes
3 answers
3k views

Why did the distribution of asteroids discovered in 2010 have a radial modulation?

20 votes
1 answer
3k views

Why can't supermassive black holes merge? (or can they?)

20 votes
1 answer
2k views

"Next Generation Arecibo Telescope (NGAT)... would combine a 314-metre-wide platform with a swarm of 9-metre dishes on top" What would that look like?

19 votes
4 answers
5k views

What are "non-Keplerian" orbits? What are some familiar examples in our solar system, and can some still be closed?

19 votes
1 answer
5k views

Serious alternate form of the Drake Equation, or graffiti?

18 votes
2 answers
830 views

Did nobody in the Astronomy community think 12,000 new satellites in LEO might be a problem?

18 votes
2 answers
4k views

Why does the Fourier transform of this CMB image have a hole in it?

18 votes
1 answer
724 views

"Who saw" the binary neutron star merger first? What was the sequence of events? (GRB/GW170817)

17 votes
1 answer
482 views

Orbital velocity of a planet - why is my calculation off by about 10%?

17 votes
1 answer
1k views

Will the Vera C. Rubin Observatory (formerly the LSST) make a significant increase in the rate of astronomical event alerts?

17 votes
3 answers
1k views

What is the "lost light" in this unusual Hubble Deep Sky image?

17 votes
4 answers
3k views

Which are stars and which are noise in this comet photo?

16 votes
2 answers
2k views

What will it finally take to accurately measure the distance to Betelgeuse?

16 votes
5 answers
2k views

Has anyone ever tried to make a simple telescope using ice?

16 votes
3 answers
3k views

Under which conditions could a planet's massive moon's orbit get closer to the planet?

16 votes
3 answers
2k views

Was lunar libration first observed or first predicted? In either case, who was the responsible party?

15 votes
1 answer
2k views

What is it exactly about these flares of infrared light from Sgr A* that "confirms" it is a supermassive black hole?

15 votes
1 answer
1k views

How can the Sun block an X-ray telescope from observing a QPO galaxy "for several years"?

15 votes
2 answers
3k views

Has radio astronomy ever been done on objects that appear very close to the Moon? Is this avoided?

15 votes
2 answers
2k views

Why does the closest approach of star S2 to Sgr A* not appear to be near the focus of its elliptical orbit?

15 votes
2 answers
2k views

What caused this mysterious stellar occultation on July 10, 2017 from something ~100 km away from 486958 Arrokoth?

15 votes
2 answers
578 views

What was the absolute limit to the possible sizes of the first stars formed from "primordial material with no metals"?

1
2 3 4 5
24