Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Was Comet ATLAS a blast from the past?
Comet ATLAS was seen to break apart in 2020, while still relatively far from the sun. An astronomer thinks our early ancestors saw this comet.
August 25, 2021
Rare lunar halo – an odd-radius halo – over India
A common halo around the sun or moon has a radius of 22 degrees. It's called a 22-degree halo. But here's a rare lunar halo: an odd-radius halo.
August 25, 2021
A black hole with rings: V404 Cygni
Huge rings of dust were discovered by astronomers around the black hole V404 Cygni in 2015. The rings are only visible in X-ray images.
August 24, 2021
ESA screens a record number of astronaut hopefuls
Astronaut hopefuls are being asked for their patience as ESA processes over 23,000 applications to its astronaut recruitment; a number that far exceeds the agency’s most optimistic forecasts.
August 24, 2021
Unexpected Perseid outburst floods cameras, wows viewers
Unexpected Perseid outburst on August 14, 2021. Automatic all-sky cameras caught it, and observers in Wyoming, USA and Ontario, Canada made visual observations.
August 22, 2021
Blockchains work like DNA in cells, scientists say
Blockchains work like DNA, says a new study. Its instructions are replicated across thousands of "nodes," much as DNA is replicated in cells.
August 22, 2021
A-74 iceberg near collision with Brunt Ice Shelf
Antarctica has been in 24-hour darkness in recent months. But satellite images show that the A-74 iceberg near collision with the Brunt Ice Shelf is ongoing.
August 21, 2021
A spiral arm break in the Milky Way
Scientists discovered a spiral arm break in the Milky Way, lying some 4,000 light-years away, which contains some of the most famous nebulas in the heavens.
August 20, 2021
Heads up! Close asteroid pass August 21
Close asteroid pass August 21, 2021. This fast-moving asteroid is designed 2016 AJ193. It's currently rushing inward toward the sun. It will not strike Earth.
August 20, 2021
Blue Moon, Saturn, Jupiter August 19 to 22
Blue Moon, Saturn, Jupiter visible near one another this upcoming weekend, August 19 to 22, 2021. Watch for these worlds in your sky.
August 19, 2021
