1.   David Clark Co., which makes the orange suits that shuttle astronauts wear during takeoff, has also built a Mars concept suit, the D-suit.

2.   In fact, the man is testing the spacesuit astronauts might wear if they ever go to the Red Planet.

3.   Its products were worn by astronauts on the Apollo space missions.

4.   Its products range from colorants in Crayola Washable Markers to the orange spacesuits that shuttle astronauts wear.

5.   So the two Russian astronauts will wear old, but less bulky, spacesuits and gloves for the repair mission.

6.   The astronauts wear wireless mikes that are as light and unobtrusive as NASA can make them, he explained.

7.   The liquid cooling garment worn by astronauts has been adapted to help people born without sweat glands to eliminate excessive body heat.

8.   It will also be the first time an American astronaut wears a Russian-made spacesuit.

9.   The Russian half of the international space station is so noisy that astronauts will wear earplugs when they drop off supplies later this week.

10.   In space, the astronauts will wear sensors to monitor the effects of weightlessness on their bones, muscle performance, energy expenditure and pulmonary funtions.