Satellites and spacecraft in the vast region between Earth and the moon and just beyond—called cislunar space—are crucial for ...

The moon greets Jupiter two days ahead of its full moon phase on Feb. 1. Look east at sunset on Jan. 30 to spot the near-full ...

Earth's moon is both the brightest and the largest object in the night sky, in terms of apparent size, making it a ...

February’s night skies hold a certain celestial splendor that only enthusiastic and vigorous skywatchers have the fortitude ...

Jupiter's moon count reaches 95+ official satellites. Explore the history of the Jovian system, from Galileo to the latest NASA discoveries.

Ganymede transits the face of Jupiter this morning, trailed by its large shadow. The event starts just before 4 A.M. EST, as Jupiter is slowly setting in the west for much of the U.S. (The planet is ...

A new international study co-led by Aix-Marseille University and Southwest Research Institute (SwRI) reveals that the striking contrast in the water contents of Jupiter’s Galilean moons was ...

Mars has two small, strange moons, Phobos and Deimos, and their origin is still one of the biggest unanswered questions in planetary science. They’re shaped more like rough space rubble than proper ...

Protestors who were arrested for barricading themselves inside the mayor's office rallied again at Chicano Park and police headquarters. San Diego City Council is set to discuss providing some city ...

The new moon on January 18, 2026, will bring one of the darkest and clearest nights of the year, giving skywatchers an ideal opportunity to spot Jupiter, Saturn, and the brilliant winter ...

What exists beneath the surface of Jupiter's icy moon, Callisto? This is what a recent study accepted by The Planetary Science Journal hopes to address as a team of researchers investigated the ...

The Hubble Space Telescope took this image of Jupiter in September 2021. It depicts the planet's colorful, turbulent atmosphere organized by high-speed jet streams into dark belts and light-colored ...