Sep 3 (1976): Viking-2 Lander touchdown. Now on Mars surface.
Sep 3 (1978): Soyuz-31/29 Lands.
Sep 3 (1985): STS 51-I Lands at Edwards Air Force Base.
Sep 3 (1995): Soyuz TM-22 Launch. Gidzenko, Avdeev, Reiter (German)
Sep 3 (2017): Return of Yurchikin, J.Fischer and Whitson aboard Soyuz MS-04 after 291 days for Whitson, 155 days for Yurchikin and J. Fischer.
Sep 4 (2023): Return of Bowen, Hoburg, Al Neyadi, and Fedyaev aboard Crew Dragon Endeavour after 186 days.
Sep 4 (2024): ESA BepiColombo made a 165 km altitude flyby of Mercury.
Sep 5 (1977): Voyager-1 Launched for Tour of Jupiter (and Saturn).
Sep 5 (1982): Ariane 1 First launch fails.
Sep 5 (1983): STS-8 Lands at Edwards Air Force Base.
Sep 5 (1984): STS 41-D Lands at Edwards Air Force Base.
Sep 5 (1989): Soyuz TM-8 Launch. Viktorenko, Serebrov. To MIR.
Sep 5 (2012): Departure of Dawn spacecraft from the asteroid Vesta after 418 days in orbit. Destination Ceres in 2015.
Sep 6 (2019): India's Vikram lunar landing attempt fails at 2.3km.
Sep 7 (1988): Soyuz TM-5 lands after 2 unsuccessful deorbit burns. Lyakhov, Mohamand (Afgan).
Sep 7 (1995): Launch of STS-69 - Walker, Cockrell, Jim Voss, Newman, Gernhart
Sep 7 (2016): Return of Ovchinin, Skripochka and J. Williams aboard Soyuz TMA-20M after 173 days.
Sep 7 (2017): Fifth launch of X-37B Orbital Test Vehicle project, and the first X-37 launch on a Falcon 9.
Sep 7 (2024): Landing of Boeing Starliner, without crew, after failed test flight.
Sep 8 (1967): Surveyor-5 Launch for Moon.
Sep 8 (2000): Launch of STS-106 - Wilcutt, Altman, Lu, Mastracchio, Burbank, Malenchenko, Morukov. ISS logistics mission.
Sep 8 (2004): NASA's Genesis solar wind probe return capsule impacts Utah desert.Improper mounting of g-sensing switches causes parachutes to not deploy.
Sep 8 (2016): Launch of OSIRIS-REx asteroid sample return mission on an Atlas V toward asteriud Bennu for August 2018 rendezvous and 2023 return.
Sep 9 (1975): Viking-2 Launched to Mars for landing.
Sep 9 (1978): Venera-11 Launched to Venus.
Sep 9 (1980): GOES-4 Launch. (Geostationary Operational Environmental Sat)
Sep 9 (1982): China-12 Launch. Rem-Sensing. Film deorbited 5 days later.
Sep 9 (1994): Launch of STS-64 - Richards, Hammond, Lee, Meade, Helms, Linenger. LITE, SAFER EVA.
Sep 9 (2006): Launch of STS-115, Atlantis to ISS with P3/P4 and solar array.Jett, Ferguson, Burbank, MacLean (CSA), Tanner, Stefanyshyn-Piper.