While most scientists believe it’s a natural comet, one Harvard astronomer has suggested its unusual features could hint at ...

An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

Astronomers say 3I/Atlas will be visible in parts of the US sky for a short time, giving viewers a unique look at a comet from beyond our solar system.

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

The interstellar comet 3I/ATLAS is barreling toward its closest point to the sun as perihelion looms on Oct. 29. How different will it look when it reappears on the other side?

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

The 3I/ATLAS comet was first spotted in July near Jupiter after it entered our solar system from another universe. Here’s ...

I/ATLAS is set to reach its closest point to the Sun on Wednesday (October 29), at around 11:47 Universal Time (UT). The ...

The interstellar comet 3I/ATLAS has astronomers stumped with its bizarre sun-facing tail and weird composition. But it’s also ...

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of ...