Apparently, this user prefers to keep an air of mystery about them.
2 Why are planets spherical? Jan 10 '14
1 How astronomers distinguishes between natural and artificial signals coming from outer space? Oct 21 '15
1 Basic celestial data Jul 22 '14
0 How to calculate position of an unknown star knowing positions of some other stars from an image? May 29 '15
0 Weight of a celestial body Oct 7 '14