Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Parker Solar ...

Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's alien life closer to home — within the bounds of our solar system? The ...

"If there are lots of black holes out there, some of them must surely pass through our backyard every now and then." When you purchase through links on our site, we may earn an affiliate commission.

The universe, everything in space and time, has a shorter life expectancy than previously thought. Previously believed to die at an estimated 10 to the power of 1,100 years, the universe is now ...

"These objects really could be anywhere in the solar system at any given time." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. One million alien ...

This cosmic visitor is now officially named 3I/ATLAS, and it appears to be a comet from another solar system. reading time 3 minutes Update: July 3, 09:24 a.m. ET: On Wednesday, July 2, the ...