Bright and Visible: Closest Supernova to Earth in a Decade.

A new supernova has appeared in the Pinwheel Galaxy, which is visible in the night sky through a small telescope. The galaxy is located near the border separating Ursa Major from Boötes the Herdsman. The supernova is a dying star that has exploded, and its light has been traveling through space for 21 million years before it finally reached Earth last week. Astronomers will continue to monitor the supernova in the days to come, noting any fluctuations in brightness before it eventually fades away.