For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are ...

Harvard and Smithsonian (CfA), and its Submillimeter Array (SMA), were critical for identifying a cache of belts surrounding other stars beyond the sun where comets may reside. Regions around 74 stars ...

Before this revelation, comets were associated with spiritual events, as people had no explanation for it. But Halley’s discovery along ... at once and cause the biggest flood in the history ...

Feb. 6, 2025 — Astronomers have characterized the largest-ever early-Universe radio ... Jan. 29, 2025 — Scientists found that asteroid Bennu contained a set of salty mineral deposits that ...

Photograph by Jonny Weeks, Guardian/Eyevine/Redux When a new object is discovered, NASA and ESA’s asteroid and comet-tracking groups ... JWST being the biggest of all,” says Julien de Wit ...

Here's a look at how these objects are found, classified and tracked — and what, if anything, can be done to prevent an Earth ...

Even so, the object — called asteroid 2024 YR4 — is Earth's biggest known impact threat ... A telescope in Chile first discovered the asteroid in late December, but fresh January data drove ...

Here's a look at how these objects are found, classified and tracked — and what, if anything, can be done to prevent an Earth ...