Clyde Tombaugh didn't set out to discover Pluto when he sent his sketches of the night sky to Lowell Observatory in Flagstaff ...

Last year, astronomers discovered an unusual Earth-size exoplanet they believe has a hemisphere of molten lava, with its ...

Galaxies, planets, black holes: to most people, everything about our Universe sounds and feels enormous. But while it's true ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

At the very beginning of its history, Earth was dry. How did it become a blue planet? A new theory could provide an answer.

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

CAPE CANAVERAL, Fla. (AP) — The threat of a newly discovered asteroid has risen slightly in the past few weeks, as the ...

In December 2024, astronomers detected a new asteroid, named 2024 YR4, which has since captured the attention of space ...

The four planet-strong "planet parade" currently visible to the naked eye in the night sky for a short time after sunset will ...

Scientists appear to have unravelled the mystery of Mars' "Martian dichotomy" - a contrast between its southern highlands and northern lowlands that's puzzled experts for over half a century.