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Star collision triggers supernova explosion
Star collision triggers supernova! Dramatic evidence that a black hole or neutron star spiraled its way into the core of a companion star and ... boom!
September 7, 2021
Success! 1st Martian rock cored by Perseverance
NASA's Perseverance rover has successfully cored its first rock on Mars. The good news comes after an earlier attempt failed in early August. The core sample will be stored onboard the rover for later return to Earth by a future mission.
September 6, 2021
1,001st near-Earth asteroid glimpsed with radar
The 1,001st near-Earth asteroid observed with planetary radar is 2016 AJ193. Scientists caught it with NASA's Goldstone antenna in late August 2021.
September 4, 2021
Shelf Cloud photos shared by readers
A shelf cloud, also known as an arcus cloud, forms at the leading edge of thunderstorms and signals that gusty winds are coming.
September 3, 2021
Venus-Spica conjunction on September 5
The Venus-Spica conjunction happens closest to September 5, 2021 for North American skywatchers. But, around the world, try September 4 and 6, too.
September 3, 2021
Milky Way photos from the 2021 season
Milky Way season is wrapping up as September and October approach. Enjoy this gallery of some of the best photos of our galaxy from our readers.
September 3, 2021
Mars ice is dusty and could melt, study says
Researchers at two universities in the U.S. have found that dusty ice on Mars may melt just below the surface. The liquid water produced could potentially support microscopic life.
September 2, 2021
Aurora alert! Pair of CMEs to jolt Earth’s magnetic field
Aurora alert! A pair of coronal mass ejections will reach Earth September 1-2, 2021. Though not dangerous to satellites or the grid, they might cause auroras.
September 1, 2021
Earth’s northernmost island, found by accident
An Arctic expedition has discovered Earth's northernmost island in July. It lies north of the former title-holder, Oodaaq, off northern Greenland.
September 1, 2021
Reptiles as pets: dispelling the myths
Increasingly, people oppose owning reptiles as pets, believing they pose a danger to public health or are too cold to love. Why do reptiles get a bad rap?
September 1, 2021
