Thursday, October 29, 1998 Published at 12:38 GMT
Return to the final frontier
The shuttle lifted off after a slight delay
Space shuttle Discovery has successfully blasted off - rocketing veteran astronaut John Glenn into the history books.
Discovery, a luxurious ship compared to the cramped rocket he used in 1962, successfully blasted off at 1919GMT (1419EST) from Kennedy Space Centre.
Launch was delayed slightly by an aeroplane entering airspace above the craft.
They added the mishap would not affect the mission.
President Bill Clinton and a host of Hollywood stars watched the launch from the VIP boxes.
Mr Clinton said: "It's a great day for America and a great day for our senior citizens. I hope that all Americans share the exuberance that I feel."
Veteran observers said public interest in the launch was similar to those for the first missions to the moon and Mr Glenn, now a US senator, was the sole reason.
Studying the ageing process
During his nine days in space, Mr Glenn will be a medical guinea pig. Scientists will study his bones, heart and immune system to see how his body is reacting to the stresses of launch and the comparative comfort of zero gravity.
They hope to use the data to find out more about the ageing process and to see how older people fare in space.
A Nasa test director, Steve Altemus, says flying the jets the day before launch is a tradition for shuttle astronauts.
"It keeps their skills honed to a peak right before launch," said Mr Altemus.
The publicity surrounding the flight has generated interest from all over the world but there has been some criticism of the science.
Some researchers have argued that you can learn very little from studying only one person.
But for the scientists, John Glenn is not the only interest on the flight. The crew of seven will perform more than 80 experiments and release a satellite for two days of solar studies.
Forecasters said the weather promised to be "100% favourable" for launch at Cape Canaveral.
Hurricane Mitch, which Nasa weather observers had been following closely, was not expected to have any effect on the space mission.