Virgin Galactic is relaunching its project to send paying passengers into space.

SpaceShipTwo - which can carry six people - has been unveiled at an event in California.

The company says it hopes to "democratise space" by taking fee-paying passengers on brief trips to the edge of space.

However, tickets cost $250,000.

Despite the cost, more than 700 people have already signed up.

The programme suffered a setback when a pilot was killed in a test flight crash in 2014 - another was seriously injured.

Virgin boss Sir Richard Branson admits it was a tough time for all involved: