NASA's Juno spacecraft has spied the final "auroral footprint" of a moon of Jupiter, meaning that it has watched as the moon ...

In a landmark observation by a team of international researchers, NASA's Juno spacecraft has, for the first time, clearly ...

Learn about Explorer 1, the first U.S. satellite launched in 1958, its impact on space science, pivotal discoveries like the ...

However, prior to NASA's Juno mission, scientists had been unable to capture the auroral imprint of Callisto. The auroral phenomena of Jupiter are among the most striking natural wonders in the solar ...

Io, Europa and Ganymede had already shown their footprints through earlier observations. But Callisto, the farthest Galilean ...

The eyes of every astronomer widened this year when an interstellar traveler was discovered in our solar system.