SpaceX Falcon 9 rocket launches
An unmanned SpaceX Falcon 9 rocket carrying a space weather satellite has successfully launched from Florida's Cape Canaveral Air Force Station, USA, on its third attempt.
Problems with an Air Force tracking radar and poor weather conditions had previously delayed the launch.
The mission will look into how the Sun's fiery surface can affect us on Earth.
Changes in solar wind are thought to affect things like GPS satellites and power grids.