The first images from space were taken on sub-orbital flights.

Over the years over 3,500 sub-orbital flights were launched from the site.

Several private companies are also developing craft to take tourists on sub-orbital flights.

The sub-orbital flight itself will only be a small fraction of that time.

Engineers analysing data from its sub-orbital flight reported that all the capsule's systems had performed well and according to expectations.

No other evidence of Soviet sub-orbital manned flights ever came to light.

The secondary systems are insufficient to allow take-off and the sub-orbital flight required.

Six were flown, four as orbital carrier rockets, and two on sub-orbital flights.

They carried out three successful sub-orbital flights in 1956 and 1957.

She also volunteered to be a test subject in sub-orbital flights, but none took place.