When a thunderstorm recently lit up the night sky, cameras captured towering red shapes that looked uncannily like glowing jellyfish hanging above the clouds. The images raced across social media, and ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA's Perseverance rover has captured the first-ever photo of "naked eye" auroras on Mars. The alien light show — snapped after ...

On March 13, 1997, a phenomenon known as the Phoenix Lights appeared in Arizona and baffled thousands of people. It eventually became the largest mass UFO sighting in United States history. Now, ...

Finding evidence of alien life would be “the biggest discovery ever made by humanity,” one expert said. But so far, there’s a ...