A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

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

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

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

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It ...

NASA has discovered the third known interstellar object to pass through our solar system, but the icy snowball object poses ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth, with an equatorial diameter of 88,846 miles (about 142,984 kilometres).

The newest visitor is 416 million miles (670 million kilometers) from the sun, out near Jupiter, and heading this way at a blistering 37 miles (59 kilometers) per second.

Astronomers have discovered the strange dance that leads to the creation of rare "double hot Jupiters" in binary star systems ...