For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

On February 14, 1990, NASA's Voyager 1 spacecraft took the first family portrait of the solar system! [‘On This Day in Space’ ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

Sending a mission to the solar gravitational lens (SGL) is the most effective way of actually directly imaging a potentially ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

A closer look at the planets around a star called LHS 1903 may just flip our understanding of how planetary systems form.

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Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

A small red dwarf star in the Milky Way has drawn attention after astronomers mapped four closely orbiting planets around it. The system, known as LHS.

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.