Update: SpaceX, NASA studying possible reboost mission to Hubble Space Telescope

New evidence for liquid water beneath the south polar ice cap of Mars

Gas Flares Might Release More Methane Than Thought, Study Finds

NASA is hosting a press conference today at 4:30 PM EDT (20:30 UTC) regarding a "new study" that, according to the list of participants, involves the Polaris Dawn mission and the Hubble Space Telescope.