As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

Finding comet Tsuchinshan-ATLAS in the Northern Hemisphere isn't about looking "up," experts say, so much as looking "out." Starting in mid-October ... west and find the constellation Virgo ...

Cassiopeia (pronounced kass ee oh pee' uh) the Queen is one of the first constellations ... winter throughout the Northern Hemisphere. It lies opposite the Sun in early October.