After a one-day delay due to weather, SpaceX successfully launched a resupply mission to the International Space Station. In a tweet, SpaceX CEO Elon Musk wrote, "Ascent successful. Dragon enroute to Space Station."
Much more difficult was trying to land the used booster rocket, Falcon 9, on a floating platform in the Atlantic. "Rocket landed on droneship," the tweet continued, "but too hard for survival."