Astronomers have observed a comet behaving in ways never seen before. This documentary explores its strange features, ...

Its closest approach to Earth will occur in December, passing at a distance of 167 million miles (269 million kilometres). Observations by the Hubble Space Telescope suggest the comet's nucleus ...

Astronomers have announced a giant comet coming from the Oort Cloud, the true edge of the solar system. This documentary explores its size, path, and mystery.

A comet from another star system is swinging by Mars as a fleet of spacecraft trains its sights on the interstellar visitor ...

Hubble has captured the sharpest images to date of interstellar object 3I/ATLAS, revealing new details about this icy alien traveller. The discovery of the third interstellar object passing through ...

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A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...