What's it made of? And yes, even the ultimate query, is it aliens? That's what two Harvard astrophysicists posed in a recent paper, suggesting that Oumuamua could be some type of alien spacecraft.

Earlier this week, the mysterious interstellar object Oumuamua was back in the headlines ... not-so-subtly hinted the object was actually of alien origin. The paper, which was penned by ...

But nearly all other experts who have studied 'Oumuamua say the aliens hypothesis is extraordinarily unlikely. Read More: A bizarre interstellar object called 'Oumuamua continues to perplex ...

They say it's exactly what an alien spaceship might look like. So, Breakthrough has decided to take a closer look, with radio telescopes on Earth. Oumuamua is currently about 186 million miles ...

But one enticing theory that has not been disproven comes from Abraham Loeb's theory that Oumuamua could be a solar sail from an alien civilization. Loeb is a highly respected physicist and ...

Aliens are having a moment ... the Breakthrough Listen team pointed the big telescope at the mystery object ‘Oumuamua, ...

A project searching for intelligent life in the cosmos is going to check the first known interstellar asteroid for signs of alien technology ... called 'Oumuamua, have noted its strange, elongated ...

That's not what most space rocks do - which is in part why Harvard astrophysicist Avi Loeb says 'Oumuamua was an alien spaceship. Although most researchers agree that the object was a space rock ...

Subscribe Today to get the latest ExtremeTech news delivered right to your inbox.

Though perhaps best known for his provocative theories on the interstellar object 'Oumuamua that passed through ... suggest IM1 might be some form of alien technology. Not so easily deterred ...

The object, known as 1I/2017 U1 'Oumuamua, stimulated significant scientific debate and is still controversial today. One thing that all could agree on was that the detection of this object ...