Exoplanets, Planets, Solar System Would the thin atmosphere and absence of light pollution on Mars make for a fantastic night sky, or would martian dust/twilight spoil the view? Why don’t we have broad night-sky pictures?
Deep-Sky Objects Since the discovery of the “Pillars of Creation,” what changes have occurred within them and the surrounding area?
Exoplanets, Planets, Solar System Can you explain Mercury’s retrograde motion? Do other planets appear to do this also?
