Even a small-scale nuclear conflict would have a giant impact.
A 66 million-year-old impact crater has been discovered off the coast of West Africa, raising questions about just how many deadly space rocks the dinosaurs had to deal with.
Reference Mars is a rusty, red world and one of the most explored planets in the solar system.
Here are seven of the most terrifying things in space, including solar flares, black holes and supernovas.
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.