100 years ago, Edwin Hubble proved our Milky Way galaxy isn’t alone
A century ago, humans didn't know other galaxies existed. Here's how Edwin Hubble changed that view.
Centuries-old supernova guides James Webb Space Telescope through an interstellar gap
The James Webb Space Telescope (JWST) has captured the first exquisite images of an interstellar patch of sky, about 11,000 light-years away in the constellation Cassiopeia.
Our warming Earth: 2024 was hottest year on record, NASA says
2024 was the warmest year on record, according to NASA data. The global average temperature was 2.3 degrees Fahrenheit above the mid-20th-century baseline.
What is a monocular and how do they work?
For stargazers and wildlife watchers, monoculars can be an effective alternative to telescopes or binoculars. Here's how they work.
James Webb Space Telescope watches planet-forming dust shells zooming through space
The shells of carbon-rich dust are expanding outward into space at the breakneck velocity of 1,600 miles per second.
James Webb Space Telescope watches planet-forming dust shells zooming through space
The shells of carbon-rich dust are expanding outward into space at the breakneck velocity of 1,600 miles per second.
Moon selected as historical preservation site to protect lunar heritage
The World Monuments Fund has added the moon to its watch list of 25 historic places that face major challenges and has called for preserving lunar heritage.
What if life on Venus is just life from Earth?
Scientists think it's possible that life cells from Earth could've been transferred to Venus, thanks to asteroid impacts over the last few billion years.
Battlestar Galactica at 20: the show that reinvented space opera
How a kitsch "Star Wars" cash-in spawned a bona fide sci-fi classic. So say we all!
The 7 best total solar eclipses of the next 10 years
We explore seven of the best solar eclipses to look out for over the next 10 years.