9 night sky events to see in December, from a supermoon to a once-in-a-lifetime interstellar comet

This month will bring some striking celestial sights, including one of the year’s best meteor showers and a glowing ...

This Space Telescope’s Entire Job Is to Search For Signs of Life On 20 Distant Planets

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...