Research by astronomers, led by the University of Geneva (UNIGE), challenges current theories about the formation of ...

Giant planets orbiting close to their stars were thought to boot other planets out of their star system on the way in, but ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the ...

China is set to embark on a series of ambitious space missions in 2025 including a new sample return mission and the debut of an array of new spacec ...

Centaurs, these objects orbiting between Jupiter and Neptune, exhibit traits of both asteroids and comets. (2060) Chiron, in ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

The larger moons of Pluto and Earth likely formed through a collisional process with Charon and our moon, respectively, ...

BEIJING -- China is set to embark on a series of ambitious space missions in 2025, including a new sample return mission, and ...

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How many planets are there? As with the discovery of Uranus, the answer depends on who you ask. Detail from Joseph Wright of ...

Though 2025 won't mark the return of astronauts into deep space as NASA had hoped, launchpads still will be scorching-hot from a procession of robotic spacecraft attempting to land on the moon. How ...