Europa is an ice-covered moon orbiting Jupiter that likely an ocean underneath. Perhaps that ocean contains life. Perhaps it doesn't. But we're not going to know for sure until we send a probe there to check things out.
Four out of the five moons of Pluto have been discovered in the last ten years -- two of them after the New Horizon's spacecraft began its 9-and-half-year journey to the dwarf planet. Could there be more uncharted moons and hidden dangers lurking?
Saturn’s faint outermost ring cuts a massive swath as it circles around its home planet, spanning an area of sky nearly 7,000 times larger than Saturn itself.
For the most part, Pluto’s four small moons appear to orbit harmoniously and precisely around the equatorial region of the dwarf planet, but appearances can be deceiving.
On Sunday, May 31, 2015, NASA's Cassini spacecraft successfully made its latest and final flyby of Hyperion, Saturn's spongy moon. And the view was amazing.
NASA's New Horizons team have pored over observational data beamed back to Earth from the speeding spacecraft and concluded, at least for now, the coast is clear for a flyby of dwarf planet Pluto.
NASA on Tuesday selected nine science instruments it believes will best address the burning question about whether Jupiter’s ocean-bearing moon Europa has indications of life.
The erupting geysers on Saturn's Enceladus may not be geysers at all, they might just seem to appear when viewed from certain angles.
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