We came up with the same question the summer that I worked in the iron mines of northern MN. as college interns for the summer of 1953 when rocket science was just becoming new to us.
One of the guys in the lab was a German immigrant who had been an assistant to Werner Braun in Germany during WWII. He explained the "equal but opposite" reaction to light pressure. The Germans had calculated that a short blast of 1 to 1.5 psi would turn a rocket in space (no atmosphere required to turn a rocket).
Man, that sure makes me feel ancient just thinking back about it. We've come a long way since then.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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