Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

See the iconic Pillars of Creation in this 3D visualization created from James Webb and Hubble Space Telescope data. Credits ...

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

NASA has discovered 3I/ATLAS, only the third known interstellar object, now passing through our solar system from the ...