The Russian space agency Roscosmos launched a robotic cargo ship early Wednesday (Feb. 22) on a mission to deliver fresh supplies to the International Space Station. The autonomous Progress 66 resupply ship launched into orbit atop a Soyuz rocket at 12:58 a.m. EST (0558 GMT), lifting off from a pad at the Baikonur Cosmodrome in Kazakhstan. The cargo ship will arrive at the space station early Friday (Feb. 24).

Life as we know it requires liquid water. So you can imagine the excitement when, in 2015, hydrated minerals — or compounds that form in the presence of water — were seen on the same Martian slopes as mysterious features known as "recurring slope lineae" or, simply, RSL. First imaged in high resolution by NASA's Mars Reconnaissance Orbiter (MRO) in 2006, these features tend to appear and disappear over several months, appearing at times when the sun shines most strongly upon those slopes.

A SpaceX Dragon cargo ship packed with nearly three tons of supplies aborted its rendezvous to the International Space Station early Wednesday (Feb. 22) due to a navigation software glitch, NASA officials said. The supply ship will now aim for a Thursday arrival at the station. The unpiloted Dragon capsule aborted its approach to the space station at 3:25 a.m.