SpaceShipTwo is a reusable manned suborbital spacecraft (rocket-glider).
The rocket launcher carries up to 8 people (6 passengers + 2 pilots), the launch is made from the carrier aircraft. The goal is a suborbital flight at altitudes of about 100 km.
Today, a suborbital rocket plane was tested with the launch of a hybrid rocket engine (a dangerous technology, they already had an explosion and victims in 2007).