Apparently, this user prefers to keep an air of mystery about them.
8 Recommendation for introductory cosmology text May 28 '14
8 What can be seen with a 4.5" telescope Dec 18 '13
4 What would happen if an ice cube is left in space? Jul 11 '14
3 Total solar eclipse, supermoon, and spring equinox all happening at the same time: anything special about this? Mar 21 '15