On this particular night, all four moons will be in view. Flanking Jupiter on one side, going outward from Jupiter will be Io, Europa and Callisto and Ganymede, while all by its lonesome on the ...

3, 2024 — Around 4 billion years ago, an asteroid hit the Jupiter moon Ganymede. Now, a researcher realized that the Solar System's biggest moon's axis has shifted as a result of the impact ...

Venus, Jupiter, and Mars dominate the sky. Catch your last views of Saturn as early in the month, the Moon passes in front of ...

Loki Patera is 202 kilometres (126 mi) in diameter, covers 20,000 sq km (7,700 sq mi), and was the largest volcanic feature found on Io until these new observations revealed the hot spot in the south ...

Watch a bright Moon dominate the sky, trace the Winter Hexagon, and continue enjoying the evening parade of planets in the ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Jupiter, as seen by NASA’s Juno spacecraft on Dec. 28, 2024, during ...

Throughout their orbit, the Ganymede transits once, Europa transits twice, and IO transits up to four times, all in the span of seven days. Since these moons orbit close to Jupiter’s own orbital ...

Today, these four moons are collectively known as the “Galilean satellites,” a tribute to their discoverer. In 1614, the German astronomer Johannes Kepler suggested naming the satellites after ...

NASA’s Juno mission found Io’s biggest volcanic eruption ever. The explosion was stronger than all Earth’s power plants ...

NASA’s Juno spacecraft has uncovered an immense volcanic hot spot on Jupiter’s moon Io, surpassing any previously recorded ...

Europa Clipper - one of the most advanced spacecraft ever sent to another planet - aims to explore Jupiter's icy moon ...

On Dec. 27, 2024, NASA's Juno spacecraft swooped by the volcanic world Io. It witnessed a giant eruption.