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07/11/2019 – Ephemeris – Road to the Moon: Project Gemini

July 11, 2019 Comments off

Ephemeris for Thursday, July 11th. Today the Sun will be up for 15 hours and 20 minutes, setting at 9:28, and it will rise tomorrow at 6:08. The Moon, 2 days past first quarter, will set at 2:57 tomorrow morning.

In the steps to the Moon in the 1960’s The United States proved that humans could work in space for at least a day and a half with Project Mercury. Following that was Project Gemini to prove that humans could work and survive in space for the time it takes to get to the Moon and back, up to two weeks; to practice the techniques of rendezvous and docking of two spacecraft; and to learn how to work in space outside the spacecraft: Extravehicular Activities (EVAs), better known as space walks. Each took multiple flights to perfect. One of the hardest to perfect was working with Newton’s third law: For every action there is an equal and opposite reaction, especially when trying to tighten a bolt with a wrench.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

Rendezvous and docking practice.

Rendezvous and docking practice. Atlas launches an Agena target vehicle first then one orbit later the Titan II launches the Gemini spacecraft. Credit NASA.

Gemini 6 rendezvous with Gemini 7

Gemini 6 rendezvous with Gemini 7 after the Agena for Gemini 6 failed to orbit. Gemini 7 was a two week endurance flight. Then Gemini 6 was sent up to meet it. Credit NASA.

Ed White in America's first space walk

Ed White in America’s first space walk on Gemini 4. Floating around was easy. but performing work was hard. Credit NASA.