Launched in 1997, NASA’s Voyager spacecraft has been traveling ever since, and it was around 167 astronomical units (AU) away from Earth. It was the first spacecraft to go beyond the heliosphere, ...

NASA says its Voyager 2 probe flew into interstellar space in November and beyond the sun's reach. However, the robot has not left the solar system.

Is 3I/ATLAS an alien space probe? An irregular comet? Debate rages around status of 3rd interstellar object ever spotted. Harvard astrophysicist Avi Loeb discusses implications with ‘Magazine.' An ...

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

Oct. 7 (UPI) --NASA and the European Space Agency are tracking the 3I/ATLAS interstellar object as it travels past Mars on its way toward the Sun and through the solar system. The object is thought to ...

A European Space Agency spacecraft orbiting Mars caught a glimpse of interstellar comet 3I/ATLAS last week. Credit: ESA / D. Ducros illustration As a visitor from another solar system made its closest ...

The interstellar visitor appears to have a lot in common with its solar system brethren. On July 1, 2025, the Deep Random Survey remote telescope in Chile, part of the ATLAS (Asteroid ...

Comet Lemmon, also designated C/2025 A6, was discovered in January by a telescope scouring the night sky for near-Earth ...