9 weird transients from 1950 still unexplained

Astronomers in Sweden want to solve the mystery of 9 weird transients, glimpsed in a photographic plate acquired at Palomar Observatory in 1950.

Astronomy art: Voices of Apollo 11

Voices of Apollo 11 is an image of the moon, made of the words transmitted from the moon by Apollo 11 astronauts. Astronomy artist J-P Metsavainio created it.

Thank you, Eleanor Imster

Say good-bye to Eleanor Imster, a fixture at EarthSky since 1995.

The billionaire space race and the Karman line

The billionaire space race ramped up at Richard Branson's successful flight to the edge of space on July 11, 2021, as 2 spaceflight companies jostled for bragging rights.

NASA’s Mission Equity: Still time to participate

NASA's Mission Equity virtual public meeting on July 13, with the goal of including underrepresented and underserved communities.

Dragon Man may be Homo sapiens’ closest relative

Scientists determined a skull found in China is a new species named Homo longi, or Dragon Man, which is the closest relative to Homo sapiens.

What causes a highway mirage?

A highway mirage is most often seen in summer, when the roadway ahead of you might be much hotter than the air above. Here's what causes it.

US intelligence report: 140 unexplained UFOs, no aliens

A newly released U.S. intelligence report cannot "confirm or deny" that the unidentified aerial phenomena, or UAPs, sighted by Navy pilots are due to alien visitors.

Heat grips Pacific Northwest

Meteorologists issue warnings, watches and advisories as extreme heat grips Pacific Northwest this weekend, into next week. Triple-digit highs expected.

The sad fate of krill in the Southern Ocean

Krill in the Southern Ocean are projected to decline about 30% this century, due to human-driven climate change. But natural variability also plays a role. A new study tries to tease out the difference.