Plus: Observe two stunning spirals, see Venus reappear as a morning star, and enjoy the Last Quarter Moon in the sky this ...

Io’s long-debated magma ocean may not exist. Juno spacecraft data reveals that tidal forces deform the moon differently than expected if a magma ocean were present. Instead, Io’s mantle appears mostly ...

Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

Using data collected by NASA's Juno spacecraft as it flew past Jupiter's highly volcanic moon Io in late 2023 and again in early 2024, a Southwest Research Institute-led team identified electrons with ...

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

Plus: A solar eclipse and an occultation of the Pleiades as our satellite skims through several constellations in the sky ...

NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. Before Voyager 1 flew by Io, scientists believed the moon to be a dead world much like Earth's moon. The mission ...

But it hasn't always been this way. Jupiter's four largest moons – Io, Europa, Ganymede and Callisto – were the first ever ...

Jupiter’s moon Io (left side of image) is connected to Jupiter (right side of image) through the planet’s magnetic field. Juno’s close flyby of Io revealed electrons with varying properties ...

NASA’s Juno spacecraft has recorded the most powerful volcanic eruption on Io, Jupiter’s most volcanic moon. The eruption site, detected on 27 December 2024, is fueled by a massive magma chamber ...

NASA’s Juno spacecraft has recorded the most powerful volcanic eruption on Io, Jupiter’s most volcanic moon. The eruption site, detected on 27 December 2024, is fueled by a massive magma ...