Something unusual is moving through our solar system —a fast, faint object now confirmed to have originated beyond it.

"All non-interstellar comets such as Halley's comet formed with our solar system, so are up to 4.5 billion years old," Hopkins told the Royal Astronomical Society.

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An interstellar object has been spotted zipping through our solar system, and amateur and professional astronomers around the world are now racing to train their telescopes in its direction ...

The comet is only the third known object originating outside of out solar system to pay us a visit.

Watch interstellar comet 3I/ATLAS live online tonight as it races toward the sun on a rare visit from beyond our solar system.

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

NASA scientists have confirmed that a mysterious object shooting toward us through the solar system is an "interstellar object" — only the third of its kind ever seen.

Astronomers are reporting the detection of a large object entering our solar system, and it is causing quite the stir in the scientific community.

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

WASHINGTON, July 3 >> Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object has been observed visiting our solar system.