As we view Saturn from Earth over years, our perspective changes. Sometimes see the north face of the rings, and sometimes the south face.

Late at night on these next several nights - September 25, 26 and 27, 2021 - watch for the moon, Aldebaran, Pleiades.

EarthSky readers shared two amazing September deep sky photographs with us: the Cygnus Loop, a nebula that stretches into Vulpecula, and Bode's Galaxy, aka M81.

NASA scientists say that there were once thousands of volcanic eruptions on Mars. These explosive blasts, in the northern Arabia Terra region, were "super eruptions," the largest and most powerful kind known. The intense activity continued for about 500 million years, about four billion years ago.

The Juno spacecraft observed footprint tails of aurora on Jupiter’s atmosphere. Three of Jupiter’s closest large moons create these auroral tails.

Scientists in the U.K. have developed a kind of "space concrete" using dust and human blood that could be used for future human habitats on Mars or the moon.

The Bible story of Sodom and Gomorrah describes ancient cities destroyed for their wickedness. New research suggests a meteor impact instead.

Photos of 2021's Harvest Moon from the EarthSky Community. Our thanks to all who contributed! Check out community page for more.

Asteroid 2021 SG - 4 times the diameter of 2013's Chelyabinsk meteor - passed near Earth without being previously detected on September 16, 2021.

Between the U.S. and China: Will it be collaboration or competition that defines international space science and exploration in the 21st century?