A rare comet from another star system is revealing just how different alien solar systems may be from our own.

It's been nearly a month since the second interstellar object, C/2019 Q4 (Borisov), was detected. And this newly identified object could potentially be studied, according to a new study. The research, ...

A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

A massive interstellar object passing through our solar system during its formative years likely altered the orbits of planets into trajectories observed today, a new study says. Interactions with ...

When you think of outer space, you're likely picturing stars, planets and moons. But much of space is filled with clouds of gas, plasma and stardust—known as interstellar clouds.

Interstellar travel could be possible, scientists say, but not in the way you might think. For decades, science fiction stories have proposed the idea of traveling outside of our known galaxy. This ...

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The solar system is now at the edge of this cloud, but the massive stockpile of cosmic stardust has left signatures on ...

As grad school approached for astrophysics senior Atsuhiro Yaginuma, he did not know what he wanted to study. That was until July 1, when the third ever interstellar object — a body originating from ...

A shocking new study suggests that the second interstellar object ever discovered, Comet 2I/Borisov, could be carrying water on it from beyond the Solar System. The study suggests that 2I/Borisov, ...

A pair of scientists may have figured out interstellar asteroid ‘Oumuamua’s secret — and it’s not an alien spaceship after all. When the first known interstellar object passed through our Solar System ...

The next time a space rock races through our solar system from beyond, humans will be a little more prepared to unlock its secrets. To date, astronomers have identified two interstellar objects that ...