The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Before 3I/ATLAS, the only other confirmed interstellar tourists we've seen were the now-famous, cigar-shaped 'Oumuamua' in ...

The mysterious interstellar object 3I/ATLAS may be seeding the worlds of this solar system with the early stages of life, new scans reveal.

Before the ribbon cutting for the solar system walk on the Columbia Greenway Rail Trail on Nov. 29, created by Westfield High School Astronomy Club members Krystyna Goulette and Kaitlyn Goulette — ...

Scientists in Boulder are using existing NASA spacecraft to track a rare interstellar comet called 31/ATLAS as it travels ...

A team of researchers from the University of Zurich and the NCCR PlanetS is challenging our understanding of the solar system ...

A staggering 250,000 kilometers per hour was the speed at which the comet had rushed through the inner solar system near the Sun–a reminder of how extreme velocities set interstellar visitors apart ...

Irish planetary scientists have christened a spider-like feature on Jupiter's icy moon Europa as "Damhán Alla," which ...

Clocks tick faster on Mars than they do on Earth, in part because Mars experiences less gravitational pull from the Sun. Now ...

For the first time, we can see and hear lightning-like discharges in Mars' thin atmosphere.

Earth's climate has swung between ice ages and warmer periods for millions of years, driven by subtle changes in our planet's ...

NASA has lost contact with a spacecraft that's been orbiting Mars for more than a decade. Maven abruptly stopped ...