Astronomy for beginners, Observing Basics Why do the constellations and the Moon appear upside down from the Southern Hemisphere?
Exoplanets, Planets, Robotic Spaceflight, Solar System How does the New Horizons mission team intend to target additional objects in the Kuiper Belt, and how will the craft approach them after the Pluto system encounter?
Science Why is one of the three filters in the Hubble palette ionized sulfur? Is Sulfur really that prevalent in the universe?
