A SpaceX Falcon 9 rocket just launched a Dragon spacecraft into orbit this morning to deliver cargo to the International Space Station. The Dragon is carrying over 4,800 pounds (2177 kg) of research materials and equipment plus supplies for the crew. The Dragon will rendezvous and berth to the ISS on Sunday morning US time.
Both the Dragon and the first stage booster have each flown once before. The first stage came back to the Cape and landed successfully.
Here are views of the first stage landing:
And this video gives brief descriptions of some of the science and technology R&D payloads being delivered to the Station:
The complete SpaceX Webcast of the launch, landing, and Dragon deployment: