Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first ...

An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

In the predawn hours of July 1, 2025, a faint streak of light caught the attention of astronomers peering through data from a ...

Astronomers spotted an object speeding at 133,200 miles per hour (about 214,364 kilometres per hour), which is too fast to be ...

The host star, HIP 67522, is slightly larger and cooler than our Sun. But unlike our middle-aged star, this one is just 17 ...

Astronomers from the University of Turku in Finland and elsewhere have performed a broadband spectral and timing study of an ...

A quiet, glowing gas cloud has been hiding in plain sight not far from Earth. For decades, astronomers have predicted that ...

NASA has since confirmed the object is an interstellar comet called 3I/ATLAS – and it is only the third interstellar object ...

A supernova explosion occurred on July 4, 1054, resulting from the death of a star estimated to be nine to eleven times the ...

NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between ...

Sometimes "the universe comes to us," writes the European Space Agency. For the third time since 2017, an interstellar object ...