TEMPE, Ariz. ñ An international team of astronomers today is reporting on a discovery of a star exploding inside another star. The discovery is helping astronomers learn more about the structure of a ...

Multiple videos show a rare "fireball" meteor breaking apart with a flash of emerald light over the erupting Mount Mayon.

"I showed this to a couple of friends yesterday to see what they thought," Dominick wrote on X. "They both thought it was a meteor exploding in the atmosphere - a rather bright one called a bolide." I ...

The celestial wonders of April's solar eclipse and the mesmerizing dance of last weekend's aurora borealis captivated millions, yet the cosmos has an even more elusive spectacle in store. Before the ...