The summit of Mauna Kea on Big Island, Hawaii, already plays host to 13 observatories -- now a new, monster addition the telescopic family is one step closer to reality. ->

Saturn's rings rain charged water particles down onto the gas giant's atmosphere, causing measurable changes in the planet's ionosphere. ->

Astronomy can be a cosmic detective story, and our enduring fascination with the solar system's mysterious hinterland of small icy objects in the Kuiper belt is no exception. ->

Although there appears to be a mysterious dearth of exoplanets smaller than Earth, data from NASA's Kepler space telescope suggest that nearly a quarter of all sun-like stars in our galaxy play host to worlds 1-3 times the size of our planet. ->

See cold, distant Neptune and its moon Triton as you've never seen them before -- through the eyes of the Keck infrared observatory.