Two other things made 'Oumuamua unique. First, it appeared to have a dry, rocky surface, akin to the asteroids known in our solar system. But it also changed its orbit in a way that could not ...

The solar system could be packed with 1 million alien visitors, space rocks shaken away from our cosmic neighbor Alpha ...

Keep your eye on the ball” is a motto for many athletes—and for astronomers trying to find Earth-threatening space rocks ...

PanSTARRS, which identified the first interstellar object ‘Oumuamua, is facing challenges as more satellites are put into orbit, such as the 60 satellites from Starlink in late May.

Unfortunately, it’s not currently possible to track ‘Oumuamua down for further study. Its highly eccentric orbit will take it too far for any spacecraft to reach or any telescope to observe.

Oumuamua, as it came to be known ... examining whether material from the nearby star system could make its way to orbit around the Sun. Things are always in motion in space.

The giant cloud of detritus is thought to be the source of strange comets and meteorites flying past Earth such as the mysterious cigar-shaped rock known as Oumuamua that was spotted in October 2017.