Some were lost during missions, others deliberately dumped, all of them now part of the growing problem of space debris.

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

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth — but closer to the red planet than us at a safe 150 million miles (240 ...