How do the biggest stars in the universe grow so large?
Some stars in the universe grow to 300 times larger our own sun. But how do they get so big, and how do they sustain their mass?
If aliens explore space like humans do, NASA scientists know where to look for their signals
Studying the signals that humanity beams through the solar system has allowed a team of NASA researchers to pinpoint where and when astronomers should hunt for alien technosignatures.
Astronomers trace massive cosmic explosion back 12 billion years. ‘This is the most distant event where we can directly see light escaping from around stars’
Astronomers used the Einstein Probe to track a powerful blast of X-rays back to its source in the early universe.
Reining in the sun: Venus, Earth and Jupiter may work together to reduce the risk of extreme solar storms
Tidal forces from Earth, Venus and Jupiter may help keep the sun calm, reducing the risk of powerful solar storms that threaten Earth, a new study suggests.
Watch sun unleash back-to-back plasma blasts in ‘spectacular’ prominence eruptions (video)
Two colossal plasma fountains tore away from the sun in a breathtaking double blast, one of the most impressive eruptions this solar cycle.
Curiosity rover images 3 intersecting Mars ridges | Space photo of the day for Aug. 21, 2025
As part of its exploration of Mars's boxwork landscape, Curiosity found itself in a fork-in-the-road
Test your true terrestrial trivia with our Earth quiz!
This quiz will explore the science behind the scenery, the facts behind the familiar, and the wonders that make Earth a living planet.
South Korea’s K-RadCube radiation satellite will hitch a ride on NASA’s Artemis 2 moon mission
South Korea's K-RadCube satellite has arrived at NASA's Kennedy Space Center in Florida ahead of its launch toward the moon on the Artemis 2 mission next year.
The Milky Way’s faintest satellite may not be what astronomers thought. ‘These results solve a major mystery in astrophysics’
A distant galaxy nicknamed "Cosmic Grapes" is bursting with massive star-forming clumps — far more than expected — offering fresh clues about how galaxies grew in the early universe.
Supernovas are hard to detect. Scientists just found a way to spot them hours after they explode
Astronomers have learned how to find supernova explosions in their earliest stages, giving us an unprecedented look at how these stars blow up.