The events on this day in history for our heritage companies are noted below:
The earliest event was in 1963, the latest event was in 2018
Human Spaceflight:
1968 – MM X-24A flight 1, Dryden Lake – Pilot Jerauld Gentry – first flight of the X-24A
1970 – SPLASHDOWN: Apollo 13 splashes down and crew returns safely; failure review board convened
1993 – LANDING: STS-56 (Discovery), KSC
1998 – LAUNCH: STS-90 (Columbia), LC39A, KSC – 7 person crew, Neurolab
Military and Classified Programs:
1963 – Thiokol, Aerojet-General and Lockheed Propulsion selected by DoD to develop large-scale solid rocket motors (program 623A)
1968 – LAUNCH: Classified mission, MM Titan IIIB, SLC4W, VAFB
1984 – LAUNCH: Classified mission, MM Titan 24B, SCL4W, VAFB
2018 – LM submits proposal for GPS IIIF program
Exploration and Interplanetary Programs:
1967 – LAUNCH: Surveyor 3, GD Atlas/Centaur D, LC36B, CCAFS
Earth-Monitoring and Civil Weather Satellite programs:
NONE
Commercial Programs:
NONE
Test, ICBM, FBM programs:
1963 – LAUNCH (3): Lockheed Polaris A2 SSBN608, ETR
Other:
NONE
The photos today are from the STS-90 mission in 1998 and include the launch, the crew, and the Neurolab set-up in the cargo bay.
![](https://i0.wp.com/marsretirees.org/wp-content/uploads/2023/04/8EABE383-D7D3-4802-A65B-4315081F6889.jpeg?resize=512%2C768&ssl=1)
![](https://i0.wp.com/marsretirees.org/wp-content/uploads/2023/04/F4D2C44F-AFDB-4BFD-B3F6-EBCB4CBE7AE3-1024x811.jpeg?resize=650%2C515&ssl=1)
![](https://i0.wp.com/marsretirees.org/wp-content/uploads/2023/04/2E1FBE2B-D920-4DDE-97D3-7CF48735D27E.jpeg?resize=650%2C427&ssl=1)