How the ISS Astronauts Grew Their Space Lettuce

Interesting to see what microgravity teaches us about agriculture!

Don’t know why they use the word “microgravity”?  If it’s in orbit, the effects of gravity have to be zero by definition… Because there is no such thing as “zero gravity”!  There’s gravity from the sun all the way out here, it’s really more like no relative acceleration.  As in microgravity, you’re actually in perpetual free fall.