It all began on a clear night in 1610 AD. Galileo Galilei caught glimpses of four bodies that would later bear his name—the Galilean Moons. Because Jupiter's largest satellites were so bright, Galileo ...

Io, one of the four Galilean moons of Jupiter, as seen by the Galileo probe, circa 1997. (Photo by Space Frontiers/Hulton Archive/Getty Images) New data from NASA’s $1.2 billion Juno spacecraft — now ...

A close conjunction of the waning crescent Moon (approximately 26% illuminated) and Jupiter occurred around 7 A.M. EDT, observable in the eastern sky before sunrise, with the Moon positioned between ...

An artistic rendering of a dust and gas disk encircling the young exoplanet, CT Cha b, 625 light-years from Earth.

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

After cataloging thousands of worlds beyond our solar system, astronomers are now closing in on a far rarer prize: a moon ...

The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

"Complete color global maps and high-resolution mosaics of Jupiter's four large moons - Io, Europa, Ganymede and Callisto - are compiled for the first time in this important atlas. The satellites are ...