An artist’s conception shows what the interstellar asteroid ‘Oumuamua might look like. (ESO Illustration / M. Kornmesser) Update: Scientists say the interstellar asteroid known as ‘Oumuamua is like ...

For the moment, that’s probably the best way to consider 'Oumuamua, the thing from outer space that just tumbled in and out of our solar system. Seems the odd little lump, defying all celestial labels ...

When the first object ever known to have visited the Earth's solar system from outer space zoomed past in 2017, it was so strange that at least one leading astronomer was convinced it was an alien ...

The astronomers operating the Pan-STARRS1 telescope on the island of Maui were not expecting to hit cosmic paydirt on Oct. 19, 2017—but they did. On what was otherwise an ordinary night of skygazing, ...

Scientists have been keeping a close watch on ‘Oumuamua, the cigar-shaped object from far beyond our own solar system that wandered toward us in 2017. Soon after, Harvard scientists proposed that it ...

The interstellar object 1I/2017 U1 (ʻOumuamua), previously known as C/2017 U1 (PANSTARRS) and A/2017 U1, was closest to the Sun on Sept. 9. Traveling at about 98,400 mph (158,360 km/h), ʻOumuamua is ...

Astronomers have cataloged eight planets, 6,500 comets and more than 525,000 asteroids, but Oumuamua is one of a kind. The elongated space object, which was discovered speeding past the sun in 2017, ...

When the first interstellar comet ever seen in our solar system was discovered in 2017, one characteristic -- an unexplained acceleration away from the sun -- sparked wild speculation, including that ...

We now know what to call the mysterious object from interstellar space that zoomed past Earth last month. The interloper — the first known interstellar body observed within our own solar system — has ...