This is simply incredible. SpaceX has successfully used a rocket to launch a spacecraft, and returned that same rocket back to Earth unharmed.

Uploaded by SpaceX on 2015-12-22.

This will significantly decrease the cost of space travel. Why? It takes a lot of fuel and rocket power to give spacecraft enough speed to leave the Earth's atmosphere. Usually, this fuel is burnt up and the rocket is detached from the spacecraft and burns up in the atmosphere.

Less resources on fuel means more resources on the actual spacecraft. Most importantly, less debate in a cost cutting political environment!

If you want to geek out over the full livestream, please see below:

With this mission, SpaceX's Falcon 9 rocket will deliver 11 satellites to low-Earth orbit for ORBCOMM, a leading global provider of Machine-to-Machine communication and Internet of Things solutions. The ORBCOMM launch is targeted for an evening launch from Space Launch Complex 40 at Cape Canaveral Air Force Station, Fla.