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Steelmaking is a major source of emissions. These companies are racing to fix it.
May 20, 2022 6:00 PM
Now’s the only time you can get a Sam’s Club membership and $10 gift card for $15
May 20, 2022 9:00 AM
Featured in astrophysics
Mar 17, 2022
Giant black holes and dark matter may share a hot origin story
At the heart of the mystery is why some black holes grew so large so quickly.
Feb 19, 2022
Rare ‘upside-down stars’ are shrouded in the remains of cannibalized suns
A rare type of star probably forms when two stars spiral around each other and smash together.
Dec 30, 2021
NASA’s Chandra spacecraft spies clover-shaped voids left by supermassive black holes
A galaxy cluster called RBS 797, 3.9 billion light-years away, contains unusual dark spots.
Dec 09, 2021
Astronomers may have found a galaxy that formed without dark matter
This lone galaxy seems to defy everything astronomers know about galactic formation.
Dec 02, 2021
On this blisteringly hot metal planet, a year lasts only 8 hours
The years are extremely short and hot on planet GJ 367b.
Aug 12, 2021
Flickering light could help astronomers weigh supermassive black holes
All astronomers need is a flickering disk.
Jul 09, 2021
The Crab Nebula’s electron launcher is so powerful, it almost shouldn’t exist
A new super-facility in the mountains of China helped make the surprising detections.
Jul 01, 2021
Black holes can gobble up neutron stars whole
The discovery means astronomers have now caught all three major types of gravitational waves.
Jun 18, 2021
We finally know why the Betelgeuse star dimmed—and it’s not what you think
The nearby star didn’t explode. But it did the next best thing: everything else.
Mar 25, 2021
Ask Us Anything: What would happen if you fell into a black hole?
Two words: lethal spaghetti.
