NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage ...

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

Comet 31/ATLAS, a rare interstellar object, may be 7 billion years old and could reveal secrets about the early Milky Way and planetesimal formation processes.

According to the team's measurements, the comet's nucleus is around a whopping 128 kilometers (80 miles) across, making it bigger than the state of Rhode Island, and far larger than its closest ...

Discover the rare interstellar comet 3i/Atlas, recently confirmed by NASA in July 2025. Learn what makes interstellar comets ...

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

July 3 (UPI) -- NASA discovered the third interstellar comet through a survey telescope in Rio Hurtado, Chile. The ...

Kareta says that come October, when the comet gets closer to Earth, "under dark skies ... with a big telescope and some ...

A comet the size of Manhattan has been detected hurtling through the solar system, marking only the third time an ...

It’s officially the third known interstellar object to pass through our solar system and poses no threat to Earth.