The discovery of geysers on Europa prove that Jupiter's icy moon is still active and almost certainly has a subsurface ocean of liquid water in which primitive life could survive.
Golden Spike says it hopes to sell missions to the moon for over $1 billion.
The company is aiming for a first launch before the end of the decade and then up 15 or 20 launches total.
Scientists are planning a new route for NASA's New Horizons space probe as it approaches a potentially perilous path toward Pluto. They aim to chart a safe, but interesting course.
Orbiting at outskirts of the solar system some three billion miles from Earth, Pluto remains shrouded in mystery.
Using data from the Hubble telescope, SETI scientists spotted a fifth moon orbiting the icy dwarf planet Pluto.
Long considered a planet, Pluto was reclassified as a 'dwarf planet' in 2006 by the International Astronomical Union. Will the discovery of a fifth moon prompt astronomers to reconsider?
Pluto's newly discovered fifth moon could mean more debris surrounding the icy dwarf planet, which could pose a hazard for NASA's New Horizons spacecraft, which was launched in 2006 with the aim of mapping Pluto's surface.
Scientists examining data from NASA's Hubble Space Telescope have spotted a fifth moon orbiting Pluto. The moon is currently labeled S/2012 (134340) 1, a monicker that could probably be improved.
Almost exactly a year after it spotted a fourth moon orbiting the icy dwarf planet, the Hubble Space Telescope has detected a fifth one.