The second-largest asteroid in the solar system is Vesta, and it may be a piece of an ancient lost planet. […] ...

The sun has produced stunning auroras on Earth in recent years as solar activity has peaked—but expect more in coming years ...

Earth's atmosphere pulses in sync with the sun's fiery outbursts, indicating it is more sensitive to solar activity than previously thought, according to new research.

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy. These "free-floating" worlds don't orbit stars, but instead roam the ...

"We've been able to show, for the very first time, that the sun's flare pulsations and Earth's atmosphere were pulsing in ...

The exoplanet 2M1510 (AB) b makes an unusual orbit around a pair of brown dwarfs, objects bigger than gas-giant planets but ...

Asteroid 2025 HY2, an Apollo-class asteroid, will pass Earth on May 7, 2025, at a speed of 48,904 km/h. Though passing at a ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?