Space buffs have long dreamed of sending astronauts to Mars.

A century ago, crossing it was the technical equivalent of sending astronauts into orbit.

This year, through hands-on activities, participants will explore the technology required to send astronauts to the moon.

But the idea of sending astronauts to other planets remains a powerful, animating force.

"If you send astronauts up to Mars, what's the best way to keep them alive - that sort of thing," he said.

The new administrator, on the job for two weeks, said at a confirmation hearing that he would consider sending astronauts to repair the 15-year-old telescope.

This is the 79th flight of the shuttle program, which first started sending astronauts into space 15 years ago.

Some people are interested in sending astronauts to visit Mars.

To accomplish this, they need to send astronauts into space-something that has never been done before.

We currently have the technology necessary to send astronauts to another star system within a reasonable timespan.