Ganymede, Jupiter's largest moon, possesses planet-like dimensions and a hidden ocean. This moon is larger than Mercury and ...

The biggest full moon of 2025, a so-called supermoon, will rise on Wednesday, Nov. 5, lighting up the night sky with its dramatic glow. At 5:30 p.m. EST (2230 GMT), the moon will reach its closest ...

And Charon, Pluto’s largest moon, is no exception. According to a new study, this icy world might redefine how scientists understand the evolution of satellites in the outer solar system. In a paper ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The biggest and brightest full moon of 2025 — and since 2019 ...

A new study suggests Ganymede—our neighborhood's biggest moon—still has a hot, churning core cranking out its unique magnetic field. Reading time 3 minutes Jupiter, the biggest planet in our solar ...

CLEVELAND, Ohio — Skywatchers in Northeast Ohio and beyond will be treated to a celestial double feature next week as the beaver moon — the year’s largest and brightest full moon — rises on Wednesday, ...

Young Jupiter’s powerful magnetic field may have created a safe zone where several large moons could survive. Saturn lacked ...

Our moon is closer in size to Earth than any other moon in the solar system is to its associated planet, however it is far ...