Asteroids
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Scientists find evidence of flowing water on Ryugu’s ancient parent asteroid. 'It was a genuine surprise!'
By Robert Lea published
Water may have flowed on the asteroid that birthed the space rock Ryugu a billion years after it formed, much later than previously thought, changing our perception of the early solar system.

Can we safely deflect a killer asteroid without making it worse? Only if we avoid the gravitational 'keyhole,' scientists say
By Elizabeth Howell published
If we slam an impactor into an asteroid in exactly the wrong spot, the space rock may pass through a "gravitational keyhole" that brings it to Earth.

Asteroid Bennu contains stardust that's older than the solar system
By Sharmila Kuthunur published
"Bennu is a time capsule of the material that was throughout the solar system."

NASA puts asteroid Bennu under the microscope | Space photo of the day for Aug. 29, 2025
By Kenna Hughes-Castleberry published
The near-Earth asteroid's microscopic surface tells a detailed story.

Scientists discover minerals in asteroid Ryugu that are older than Earth itself
By Samantha Mathewson published
Asteroid Ryugu is proving to be one of the most scientifically valuable time capsules in the solar system.

Spacecraft headed to DART asteroid crash site images 2 faint space rocks to boost planetary defense tactics
By Keith Cooper published
The techniques used to target the asteroids could also be employed in tracking hazardous asteroids and interstellar objects.

Solar farms could help find dangerous asteroids, scientist says
By Victoria Corless published
By transforming idle heliostats into asteroid detectors, scientists aim to develop a cost-effective method for spotting faint, fast-moving space rocks.

NASA or the Space Force: Who should protect Earth from dangerous asteroids?
By Leonard David published
NASA currently leads the nation's planetary defense efforts, but some are calling for the Space Force to take control.
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