Astronomy
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ProfRob
  • Member for 7 years, 9 months
  • Last seen this week
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1,545 Answers

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166 votes
Accepted

Why is the discovery of merging neutron stars important?

150 votes
Accepted

How can there be 1,000 stellar ancestors before our Sun?

112 votes
Accepted

Would we have more than 8 minutes of light, if the Sun "went out"?

95 votes
Accepted

Could the dinosaurs have seen the asteroid that killed them?

66 votes

What happens to the 99.9 % of the sun-rays that do not fall on any planets or any other celestial body?

65 votes
Accepted

Is it dark inside the Sun?

59 votes
Accepted

Did I see another planet?

58 votes
Accepted

Which atom is a Neutron star made of?

52 votes

Why is Gaia operating around Earth orbit? Why not send it to Neptune's orbit?

50 votes
Accepted

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

48 votes
Accepted

Can Newton's gravity equation explain why black holes are so strong?

48 votes

Is there any planet bigger than a star?

47 votes

Is it possible for planetary rings to be perpendicular (or near perpendicular) to the planet's orbit around the host star?

45 votes
Accepted

How large can a ball of water be without fusion starting?

45 votes
Accepted

Puzzling quotes from astronauts about earth size

45 votes
Accepted

What is the hottest thing in the universe?

44 votes
Accepted

Do we know a star that is similar to the Sun when it would be a red giant?

43 votes

Are the stars distributed in uniform distribution, on the celestial dome, with respect to brightness?

42 votes

Why is moon light not the same color as sunlight?

41 votes
Accepted

Where did TRAPPIST-1a go?

37 votes
Accepted

Why are there uneven bright areas in this photo of black hole?

37 votes
Accepted

At the Big Bang, when everything was close together, why did it not "collide", violating Planck length or Pauli Exclusion Principle?

37 votes
Accepted

Was the Geocentric Model correct at all?

35 votes
Accepted

Why don't (or can't) stars be more than 325 or so times the mass of the sun? What limits their size?

33 votes
Accepted

Why do stars explode?

33 votes
Accepted

Black Holes: More Than One Entry Point?

33 votes
Accepted

When was it worked out/discovered that our sun can't go supernova?

32 votes
Accepted

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

32 votes
Accepted

Why are there so many binary systems?

31 votes
Accepted

Speed of light in a black hole

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