They built a vehicle that went into suborbital space in 2004.

In addition to flying astronauts, the New Shepard system will provide frequent opportunities for researchers to fly experiments into suborbital space.

The company folded after three rockets built and one successfully launched to suborbital space.

X Prize calls for launching people just over 60 miles high into suborbital space, the middle frontier surpassed early in the American space program.

The company's space tourism package included screening, training and a trip into suborbital space.

It went barely 400 feet beyond the imaginary line that separates Earth's atmosphere and suborbital space.

American astronauts reached suborbital space four decades ago on the way toward orbital flights and the Moon.

The vehicle was to be powered by two jet engines and a rocket engine, intended to enable it to reach suborbital space.

Their range, though formidable, only permitted them to skirt the near edge of suborbital space.

Flights into suborbital space will be launched from the spaceport with 450 of the £125,000 tickets already sold.