This Day In Astro History

von Braun
von Braun prior to entering neutral buoyancy tank.

September 4

1968 - Wernher von Braun performed a full-pressure suit test in the Saturn I Workshop immersed in the Neutral Buoyancy Tank. He reported that the upgraded seals used in the aft dome penetration sealing study were 'very good,' but recommended additional handholds and tether points.

1958 - Happy Birthday Jacqueline Hewitt , astrophysicist and discoverer of the Einstein ring which is the deformation of the light from a source such as a galaxy into a ring known as gravitational lensing.
Jacqueline Hewitt
Happy Birthday Jacqueline Hewitt

einstein ring
Gravitational lensing
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It is my conclusion that human evolution and the motions of matter in space are intrinsically linked. The observation and understanding of the complexity of biological history on Earth cannot be complete without the tandem observation and understanding of a dynamic greater cosmos. - SpaceGene