Aalice.217 net.columbia utzoo!decvax!ucbvax!ARPAVAX:mhtsa!alice!sjb Fri Dec 11 07:49:10 1981 STS-3 experiments Seven experiments will be carried aboard STS-3. The main purposes are to measure the environment of the shuttle so that future payloads can be more effectively designed. The second purpose is to do as much scientific investigation as possible. Some of the experiments will measure temperatures, charged particles, contamination, and radiation within the shuttle when the bay doors are open. Another will see whether or not pine seedlings will grow upright in the weightlessness of space.