Last update of this page:  March 26, 2025, 9:51 am ET The Student Spaceflight Experiments Program (SSEP) has provided 20 flight opportunities to date for communities across the U.S., Canada, Brazil, and Ukraine to conduct a microgravity experiment design competition at the local level—on the final flights of Space Shuttles Endeavour and Atlantis (STS-134 and … Continue reading Experiments Selected for Flight