New Horizons Finds Evidence for Frozen Ocean Inside Pluto's Moon Charon

The canyons of Charon, some of which dwarf the Grand Canyon on Earth. Image Credit: NASA/JHUAPL/SwRI

One of the most surprising discoveries in recent years in the outer Solar System is that there are small moons which have oceans inside them. Jupiter’s moon Europa and Saturn’s moon Enceladus are now known to have […]

Mystery Deepens: New Study Shows Comets Don't Explain Odd Dimming of Kepler's 'Weird Star'

The mystery surrounding KIC 8462852 may not involve comets after all, but it is still an enigma for astronomers. Image Credit: NASA/JPL-Caltech

As has been reported previously on AmericaSpace, and elsewhere, there is something weird going on around a star which is a little over 1,400 light-years away. Astronomers are still baffled as […]

NASA's Cube Quest Challenge Aims to Send Nanosatellites to Lunar Orbit and Beyond on First SLS Flight

Registration is now open for NASA’s latest Centennial Challenges technology prize competition, called Cube Quest Challenge. The competition will award up to a total of $5 million to any teams that will successfully demonstrate a CubeSat in-space operations and communications in lunar orbit and beyond. Image Credit: NASA

With the much-anticipated, first test […]

NASA's Van Allen Probes Detect Life-Protective Electron Barrier Inside Earth's Radiation Belts

A visualization of the Earth’s radiation belts, based on data that were gathered by NASA’s twin Van Allen probes. The Earth is seen to be surrounded by the plasmapause (blue-green area) and the two main radiation belts further out (multi-color area). The boundary between the plasmapause and the inner edge of the outer […]

NASA's OSIRIS-REx Spacecraft Passes Critical Design Review, Moves Toward Construction

An artist’s concept of the OSIRIS-REx spacecraft approaching the asteroid Bennu in 2018. The mission has recently completed its Critical Design Review, moving toward construction and assembly. Image Credit: NASA/Goddard/University of Arizona

The next planetary mission in NASA’s New Frontiers program, the Near-Earth Asteroid sample return Origins Spectral Interpretation Resource Identification Security Regolith […]