The idea’s inception dates all the way back to the time of Galileo. Its long history shows that worthwhile ideas might be ...

Astronomers have constructed telescopes of every kind - massive observatories designed to pick up faint traces of light ...

NASA's Galileo spacecraft zoomed by Europa a dozen times, but it carried scientific instruments from the 1980s. Europa Clipper boasts a 21st-century payload package with nine instruments to probe ...

Planetary scientists have grown increasingly certain that Europa hosts a subsurface ocean ever since NASA’s Galileo spacecraft visited Jupiter in the 1990s (SN: 2/18/02). “During the Galileo mission, ...

Long, sinuous fissures and ridges crisscross Europa in this color composite view from NASA’s Galileo probe, hinting at deeper geological activity that has cracked and jumbled the icy moon’s ...

There is less money for an ambitious Mars mission. JPL is feeling the direct effects of this, with the third major job cut ...

Amalthea, however, is tricky to spot even when you have a spacecraft. NASA's Galileo mission imaged Amalthea in 1999. Large impact craters are visible. American astronomer Edward Emerson Barnard ...

The Voyagers provided the first detailed photos of Europa but from quite a distance. NASA’s Galileo spacecraft had repeated flybys of the moon during the 1990s, passing as close as 124 miles.

When NASA’s Voyager 2 first photographed Europa 50 years ago, and as other spacecraft like Galileo, New Horizons, and Juno have since then peeked at its surface, astronomers began to suspect ...

NASA’s Europa Clipper mission is en route to probe Jupiter’s icy moon, Europa, using advanced tools like MASPEX and UVS to hunt for clues of life in its hidden ocean.