New observations show that asteroid 1998 KY26 is a mere 11 meters across and spinning twice as fast as previously thought.

"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.

About 4.5 billion years ago, the most momentous event in the history of Earth occurred: a huge celestial body called Theia ...

NASA is providing more images and information about the interstellar object that's passing through our solar system right now ...

NASA released a trove of never-before-seen images of the interstellar comet 3I/ATLAS, unveiling new characteristics of the ...

With the government reopened, the space agency at last released pictures captured by a fleet of government spacecraft of an ...

It may not have had the speed of the race to the Moon in the 1960s, but for a nation that launched its first satellite only ...

The James Webb Telescope is reshaping our understanding of distant worlds, revealing exoplanet atmospheres, potential ...

Cutting-edge simulations show that Enceladus’ plumes are losing 20–40% less mass than earlier estimates suggested. The new ...

Harvard astronomer Avi Loeb is still not giving up hope that 3I/ATLAS could be an alien mothership and says it's too early to ...

Asteroid 2025 VP1 is hurtling through space at more than 18,300 miles per hour, the space agency has reported.

An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...