This year, the October sky could offer a rare spectacle: two comets are expected to become visible simultaneously. The first, discovered recently, follows an extremely long orbit. The ...

Asteroid 2024 YR4, whirling serenely around the sun, will certainly not hit Earth in 2032 as once feared. But they've run the ...

In 1997, a group of 39 members of the Heaven’s Gate cult believed the 1995 discovery of the Hale-Bopp comet signaled a ...

A long-tailed comet named C/2025 R2 (SWAN) was first spotted near the sun on 12 September. NASA’s Solar Dynamics Observatory ...