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Countdown to Currently Scheduled Launches for the Student Spaceflight Experiments Program
SSEP Mission 19 to ISS Endeavour Payload Countdown to Launch of SpaceX CRS-34 My countdown
SSEP Mission 20 to ISS Atlantis Payload Countdown to Estimated Launch of SpaceX CRS-35 My countdown
SSEP Mission 21 to ISS Discovery Payload Countdown to Estimated Launch of SpaceX Vehicle (TBD) My countdown
SSEP Mission 22 to ISS Armstrong Payload Countdown to Estimated Launch of SpaceX Vehicle (TBD) My countdown

Elapsed Time Since Return to Earth for Completed SSEP Missions
SSEP Mission 17 to ISS Orbiter Payload Elapsed Time Since Return to Earth 12/22/23 on SpaceX CRS-29 My count-up
SSEP Mission 18 to ISS Surveyor Payload Elapsed Time Since Return to Earth 12/17/24 on SpaceX CRS-31 My count-up

Completed SSEP MissionsM - Mission, L - Launch Date, R - Return to Earth Date

M18: L - 11/4/24 SpaceX-31; R - 12/17/24 SpaceX-31 M17: L - 11/9/23 SpaceX-29; R - 12/22/23 SpaceX-29 M16/14D: L-11/26/22 SpaceX-26, R-1/11/23 SpaceX-26
M15B/14C: L-8/29/21 SpaceX-23, R-9/30/21 SpaceX-23
M15A/14B: L- 6/3/21 SpaceX-22, R - 7/9/21 SpaceX-22
M14A: L - 12/06/20 SpaceX-21, R -01/13/21 SpaceX-21
M13: L - 07/25/19 SpaceX-18, R - 08/27/19 SpaceX-18
M12: L - 06/29/18 SpaceX-15, R - 08/03/18 SpaceX-15
M11: L - 08/14/17 SpaceX-12, R - 09/17/17 SpaceX-12
M10: L - 06/03/17 SpaceX-11, R - 07/02/17 SpaceX-11
M9: L - 02/19/17 SpaceX-10, R - 03/19/17 SpaceX-10
M8: L - 07/18/16 SpaceX-9, R - 08/26/16 SpaceX-9
M7: L - 04/08/16 SpaceX-8, R - 05/11/16 SpaceX-8
M6: L - 01/10/15 SpaceX-5, R - 02/10/15 SpaceX-5
M5: L - 07/13/14 Orb-2, R - 10/25/14 SpaceX-4
M4: L - 01/09/14 Orb -1, R - 03/10/14 Soyuz 36S
M3b: L - 01/09/14 Orb-1, R - 03/10/14 Soyuz 36S
M3a: L - 09/18/13 Orb-D1, R - 11/10/13 Soyuz 35S
M2: L - 10/07/12 SpaceX-1, R - 11/19/12 Soyuz 31S
M1: L - 05/22/12 SpaceX-D1, R - 07/01/12 Soyuz 29S
STS-135 (Atlantis): L - 07/08/11, R - 07/21/11
STS-134 (Endeavour): L - 05/16/11, R - 06/01/11

Blog Archives

The Student Spaceflight Experiments Program (SSEP) is a program of the National Center for Earth and Space Science Education (NCESSE) in the U.S., and the Arthur C. Clarke Institute for Space Education internationally. It is enabled through a strategic partnership with NanoRacks LLC, which is working with NASA under a Space Act Agreement as part of the utilization of the International Space Station as a National Laboratory. SSEP is the first pre-college STEM education program that is both a U.S. national initiative and implemented as an on-orbit commercial space venture.