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Eduardo Serra's user avatar
Eduardo Serra's user avatar
Eduardo Serra's user avatar
Eduardo Serra
  • Member for 10 years, 6 months
  • Last seen more than 3 years ago
20 votes
Accepted

Why don't we see the galaxy center?

18 votes
Accepted

Is it possible for a moon to orbit a planet floating free in the galaxy rather than orbiting a star

14 votes
Accepted

What is the fastest spinning rotation of a Neutron star?

13 votes
Accepted

Is there any telescope on Earth that can see the lunar rovers on the Moon?

12 votes

apparent size of an astronomical body

11 votes

Why are galaxies disk shaped?

10 votes
Accepted

Where did Mars' water go?

10 votes

Why are orbits elliptical instead of circular?

6 votes
Accepted

How do we calculate the escape velocity of galaxies?

6 votes

What does the term alien planet actually refer to?

3 votes

How can the Earth's rotation speed up?

3 votes
Accepted

Was comet ISON in a Kepler orbit prior to disintegrating?

2 votes

Timeline of falling into a blackhole