Deep-Sky Objects, Exotic Objects, Stars How can scientists distinguish between planetary nebulae and supernova remnants?
Exoplanets, Human Spaceflight, Planets, Robotic Spaceflight, Solar System, Space Exploration The Week in Pictures: August 17–23, 2013
Observing What do the abbreviations R.A. and Dec. mean, and how do you use them to find objects in the sky?
Solar System Do other planets have meteor showers like Earth has? Can we see them through telescopes? If so, can we learn anything about the planet’s atmosphere by looking at the light as meteors burn?
Exotic Objects Is there a correlation between the mass of a supermassive black hole and the amount of stars within its galaxy? If so, what is it?
Exoplanets, Planets, Solar System Is Mars red because of iron corrosion? If so, what process caused it to occur?
