New measurements from NASA's Juno probe have seemingly put to bed the possibility of a magma ocean beneath the surface of Io.

Last year saw the launch of a European probe called the Jupiter Icy Moons Explorer (JUICE). It will likewise examine Europa, ...

The winter stars are like that. They're bright, sparkly and arrive "from a distance" low on the eastern horizon and gradually ...

German astronomer Simon Marius is best remembered for his disputes with Galileo Galilei over priority for discovering Jupiter ...

Hundreds of volcanoes and lava lakes on Jupiter’s moon Io are likely powered in the same way as Earth’s volcanoes.

A Cold Moon hangs in the sky while Jupiter still shines bright and the Geminid meteor shower peaks in the sky this week.

NASA and ESA’s Hubble Space Telescope has been observing the outer planets through a program called OPAL (Outer Planet ...

If conditions are clear, anyone with a pair of binoculars or a telescope may even be able to pick out details, such as Jupiter’s four largest moons — Ganymede, Callisto, Io and Europa. The four ...

From 2014 to 2024, the NASA/ESA Hubble Space Telescope has been studying the outer planets under a program called OPAL (Outer ...

The Cold Moon — the 12th and final full moon of 2024 — will rise on Sunday (Dec. 15). It will ascend higher into the night ...