In 'knockout' find, researchers have a compelling alternative explanation for what seemed to be hidden pools of liquid water.
NASA's Mars Perseverance rover launched a year ago. Here's a look back at some of its milestones and missions to come.
If confirmed, the finding would push back our earliest evidence of animal life by about 350 million years.
Now, that bad news: In the real world, Patrick Star might be about to eat his BFF SpongeBob.
Air travel and carbon dioxide emissions went down for a bit, but the world continues to burn amid a global climate emergency.
"This change eliminates an enormous burden on researchers, emotionally and administratively, to correct the record."
The CDC has updated its stance on fully vaccinated people wearing masks in certain areas. We'll explain what's going on.
This season's spectacle of shooting stars is just getting started.
"I would get in a rocket ship, go up into space and, like, you know, go check out a few things," Jeff Bezos told Charlie Rose two decades ago.
The ISS said goodbye to the Russian Pirs module and sent it off to turn into a streaking fireball.
The Perseids are building toward an Aug. 11 peak, but you can catch them blazing across the sky right now. Here's how.
Breakthrough infections will continue to happen as coronavirus variants spread. But experts say that's not a reason to question vaccines. Here's what we know right now.