Two views of comet Tsuchinshan-Atlas with bars added to indicate its angular size, seen Sept. 24 from San Pedro de Atacama, Chile. Patrick Ditz via AP ...

Two views of comet Tsuchinshan-Atlas with bars added to indicate its angular size, seen Sept. 24 from San Pedro de Atacama, Chile. Patrick Ditz via AP ...

Venus moves east as July progresses and stands 3° due north of Aldebaran on the 14th, after skirting the northern regions of ...

You can watch comet 3I/ATLAS live online tonight (July 3), thanks to the Virtual Telescope Project, which will livestream ...

Late in the evening on July 1, a telescope in Chile that is part of the global, NASA-funded Asteroid Terrestrial-Impact Last ...

Astronomers discovered 3I/ATLAS, a 10–20 km-wide interstellar comet racing into the solar system. It will reach perihelion in ...

An object from another star has been seen entering the solar system at high speed, and is expected to whip around the sun in ...

The newest visitor is 416 million miles from the sun, out near Jupiter, and heading this way at a blistering 37 miles per ...

Based on the comet's brightness and current distance — it's located just inside Jupiter's orbit — scientists estimate its ...

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

A NASA-funded telescope in Chile identified a comet from interstellar space on July 1, marking a significant astronomical ...