Human Spaceflight In the December 2009 issue of Astronomy, you explained why we couldn’t bring the Hubble Space Telescope back to Earth. But can we attach it to the International Space Station?
Solar System With many new planet discoveries being hot Jupiters, is it possible that Mercury is the leftover core of a gas giant?
Cosmology I’ve heard that wormholes could make time travel in the future possible. How realistic is this phenomenon?
Science I heard that the light from nuclear fusion reactions in the Sun’s core takes about 200,000 years to reach its surface. I thought the speed of light is constant. Why does it take so long?
Exotic Objects, Science Subaru telescope detects clues for understanding the origin of mysterious dark gamma-ray bursts
