David Rankin of the Catalina Sky Survey in Arizona spends nights scanning the solar system for potentially catastrophic space ...

The James Webb Space Telescope was built to see the first galaxies, but it is rapidly becoming something stranger: a laboratory for the invisible. By pushing into the faintest, earliest structures in ...

NASA has now confirmed that 3I/ATLAS is not just another visitor from deep space but the largest interstellar comet ever ...

Webb traced the light of a dying star, supernova GRB 250314A, from when the universe was only 730 million years old.

Just yesterday (Dec. 15), the Green River levee was breached, raising the specter of flash flooding in Tukwila, south of ...

SETI's 1977 "Wow!" signal from deep space was even stronger than originally thought, but its source remains a complete ...

That not only makes this the first confirmed runaway supermassive black hole, but this object is also one of the ...

Jared Isaacman, the billionaire nominated twice to lead the agency, may draw some lessons from the tenure of another NASA ...

With 3I/ATLAS slated to make its Earth tour in two days, amateur photographers and astronomers alike are scrambling to catch ...

The comet will come much closer to Jupiter in March, zipping within 33 million miles (53 million kilometers). It will be the mid-2030s before it reaches interstellar space, never to return, said Paul ...

The James Webb Space Telescope has provided evidence of 'monster stars' in the early universe, explaining the existence of ...