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

No instrument was able to resolve 'Oumuamua, but measurements of its brightness over time indicated that it's an oddly tumbling, needle-shaped rock perhaps six times longer than it is wide.

Our solar system's first known interstellar visitor is likely even more alien than previously imagined, a new study suggests. The mysterious, needle-shaped object 'Oumuamua, which was spotted ...

The Space Needle, so high-tech and revolutionary when built in 1962, ... the hourglass-shaped structure on which a UFO appears to have landed is getting a face lift, ...

A NASA probe smashes into its comet target, ... Pictures of the collision from Flyby showed a cone-shaped plume of debris spraying into space — just what the scientists were looking for.

On November 12, 2014, a European spacecraft named Philae tried to land on Comet 67P. To say it was a bumpy landing would be an understatement. Philae separated from an orbiter called Rosetta. It ...

But ‘Oumuamua was much smaller than your typical comet, at just over 100 meters across, and when it was first observed, it didn’t have a tail and didn’t seem to be ejecting water.

A Millennium Falcon-shaped comet heading toward Earth is so bright you'll able to see it with ... abruptly brightened 100-fold on July 20 as plumes of debris and ice were blasted off it into space.