The star Betelgeuse visibly dimmed in 2019. A new analysis finds that it blew off a huge amount of its surface.
Dark energy could be caused by pressure from giant voids of nothingness that may be flinging the universe apart.
Scientists have finally identified the origin of a puzzling volcanic mineral on Mars that was found at the bottom of an ancient lake by the Curiosity rover.
A combination of more awareness and chemistry is causing sightings of greenish 'shooting stars' to skyrocket.
A surprise solar storm bashed Earth on Aug. 7 and 8, triggering an appearance of the mysterious glowing phenomenon called STEVE.
The interstellar asteroid crashed into the Pacific Ocean in 2014 and its recovery would be a world-changing scientific discovery, scientists say.
The annual Perseid meteor shower peaks this year on Aug. 11 and 12. Here’s how to watch it, and where it comes from.
NOAA reported that a "moderate" solar storm struck Earth over the weekend, and another once could hit today.
Here's a look at whether Earth is getting closer to or farther from the sun, why that's happening and what effects it might have on our planet.
A huge sunspot that's about to face Earth could disrupt satellites, cause power outages and lead to problems for airplane navigation systems.
The Cartwheel Galaxy shines in never-before-seen detail in the latest James Webb Space Telescope composite image, revealing a violent past.
Researchers say there is a 10% risk that someone will die being hit by space debris in the next 10 years.
NASA astronomers discovered that a large asteroid will zoom past Earth on Aug. 4, missing our planet by millions of miles.
It's a rare opportunity to see the Red Planet and the green planet in the same binocular field of view.