A new finding of ammonia on the icy surface of Jupiter's moon Europa could have important implications for the search for ...

WASHINGTON -- Scientists said they have found evidence of water in the atmosphere of Jupiter's icy moon "Europa." NASA said its Hubble space telescope observed the presence of persistent water vapor ...

Jupiter's fourth-largest moon is a main character in our search for other life-friendly places in our solar system.

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor Europa is thought to harbor a vast global ocean of liquid water beneath ...

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Research into Jupiter’s moons shows Io and Europa did not evolve apart but formed with opposite compositions from the beginning.

There’s no mistaking Jupiter in the sky these Butler winter evenings, rising in the southeast as evening twilight ends. In ...