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Extragalactic supernova
At its discovery in January, this supernova was as bright as its whole galaxy! Now it's fading. Astrophotographer Brian Ottum caught it Sunday night.
February 27, 2018
Moon in front of Cancer on February 27
The almost-full moon puts the constellation Cancer the Crab in the spotlight - but out of view - on the night of February 27, 2018.
February 27, 2018
Some black holes erase your past
You can't survive a passage into a black hole ... or can you? A UC Berkeley mathematician says you could enter certain types of black holes, but your past would be obliterated and you'd have an infinite number of possible futures.
February 25, 2018
Supermassive black hole and host galaxy not evolving together?
Astronomers assumed supermassive black holes and their host galaxies evolve together and affect each other. They call it "co-evolution." But it's not happening in the distant galaxy WISE1029.
February 25, 2018
This asteroid sweeps closer than our moon today
The average distance of the moon is 239,000 miles (385,000 km). Asteroid 2018 DU will sweep significantly closer than that on February 25, 2018.
February 25, 2018
Drought worsens across US Southwest, southern Plains
A lack of precipitation across the southern and western United States has led to growing drought this winter.
February 24, 2018
See it! Friday night’s moon and star
People around the world last night caught the moon near the bright star Aldebaran in the constellation Taurus the Bull.
February 24, 2018
Watch an octopus get spiky
Octopuses and cuttlefish have an amazing defense tactic. They can erect 3D spikes from their skin, hold them for an hour, then retract them and swim away.
February 23, 2018
Moon near Aldebaran on February 23
Tonight - February 23, 2018 - look for the moon near Aldebaran, the ruddy eye of the Bull.
February 23, 2018
Mars rover finds possible rock stripes
The long-lived Opportunity Mars rover keeps finding surprises, including these possible stone stripes. On Earth, similar features result from repeated freezing and thawing of wet soil.
February 22, 2018
