SpaceX successfully used a Falcon 9 rocket to take some satellites to orbit, then returned and landed successfully.
This was the first launch and return since the explosion a few months ago, after which they grounded further flights until this one.
https://techcrunch.com/2017/01/14/spacex-successfully-returns-to-launch-with-iridium-1-next-falcon-9-mission/
http://www.cnn.com/2017/01/14/us/spacex-falcon-9-launch/index.html
This was the first launch and return since the explosion a few months ago, after which they grounded further flights until this one.
https://techcrunch.com/2017/01/14/spacex-successfully-returns-to-launch-with-iridium-1-next-falcon-9-mission/
http://www.cnn.com/2017/01/14/us/spacex-falcon-9-launch/index.html