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

Europa, one of Jupiter’s intriguing moons, is hiding an ocean beneath its icy shell — an ocean that might harbor alien life.

Experts analyzed satellite imagery of planetary surface cracks and compared them with Earth's geologic features, searching ...

A huge haul of 128 newfound satellites might be a hint of past collisions in the planet’s orbit, or something else.

What views of the night sky would we have if we had evolved on the Jupiter moon Europa, or one of the TRAPPIST-1 planets? If you have a clear view of the night sky at the end of February ...

CAPE CANAVERAL, Fla.--NASA’s Juno spacecraft has made the closest approach to Jupiter’s tantalizing, icy moon Europa in more than 20 years. Juno on Thursday zipped within approximately 352 ...

Europa is the sixth largest satellite in our Solar System and the smallest of Jupiter’s four Galilean moons. Discovered by ...

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

NASA's Europa Clipper mission set sail last year and should reach Jupiter and its moons in 2030, while the European Space Agency's JUICE mission should arrive in 2031. Both missions will almost ...

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

Io’s long-debated magma ocean may not exist. Juno spacecraft data reveals that tidal forces deform the moon differently than ...