ScienceEarth water predates Solar System: Study may help understand formation of life on exoplanets Heavy water may have come into the Solar System from outside our family of planets. Much of the water on Earth could be older than the planet itself, a study reveals.by James Maynard
ScienceSierra Nevada Corp. challenges NASA-Boeing/SpaceX $6.8 billion space taxi deal: Source selection process smack of 'inconsistencies'by Rhodi Lee
ScienceMars rover Curiosity drills into Mount Sharp to collect samples and finds mysterious 'ball'by Rhodi Lee
ScienceCentral California experiences more than 500 weak earthquakes. Should you worry?by Lori Sandoval
ScienceScientists finally decode how dinosaurs turned into birds and learned how to flyby James Maynard
ScienceMangalyaan Mars Orbiter Mission: China congratulates India on Red Planet orbit entryby Rhodi Lee