30. Astronomers call it a black moon, and it something we experience often. Here’s what to know about this rare lunar occurrence. Black moons aren’t something you hear about often because they ...

A SpaceX Falcon 9 rocket lifts off from pad 39A with a payload of a pair of lunar landers at the Kennedy Space Center in Cape Canaveral, Fla., Wednesday, Jan. 15, 2025. (AP Photo/John Raoux) A SpaceX ...

Besides stars, the United States Navy uses quasars as beacons. Quasars are distant galaxies with supermassive black holes, surrounded by ... X-Ray Flashes from a Nearby Supermassive Black Hole ...

Related: Full moon names A Black Moon is a fairly rare occurrence. Because the lunar calendar almost lines up with Earth's calendar year, there is typically one full moon and one new moon each month.

Lunar eclipses are a popular event for skywatchers worldwide. Lunar eclipses occur when Earth moves between the sun and the moon, casting a shadow across the lunar surface. Lunar eclipses can only ...