In a stroke of luck, astronomers saw the comet C/2025 K1 (ATLAS) break into four or five fragments in November after it passed close to the sun.

A century after Robert Goddard’s first-ever launch of a liquid-fueled rocket, two NASA experts weigh in on what his legacy ...

In a happy twist of fate, NASA's Hubble Space Telescope witnessed a comet in the act of breaking apart. The chance of that happening while Hubble watched is extraordinarily minuscule. The findings are ...

By plying its ground-penetrating radar in the depths of Mars’s Jezero Crater, this rover has found even older deltas buried beneath those seen on the surface from space ...

The James Webb Space Telescope has revealed new details in a bizarre nebula that looks like a brain floating in space. Formed ...

To capture unprecedented, high-resolution images of distant exoplanets, NASA is actively developing a mind-bending mission that uses the Sun’s massive gravitational field as a giant magnifying glass.

The Hubble constant — named after Edwin Hubble, the astronomer who found in the early 1900s that the universe is expanding — ...

NASA deployed a fleet of spacecraft and ground-based observatories to photograph interstellar comet 3I/ATLAS as it crossed through the inner solar system, producing the most detailed views ever ...

The Van Allen Probe A spacecraft is the latest in a long line of space junk that has re-entered the Earth's atmosphere. For example, in 2024, a pallet of batteries jettisoned from the International ...

A fleet of NASA missions has likely uncovered a collision between two ultradense stars in a tiny galaxy buried in a huge ...