Today we remember April 13, 1970, the day Apollo 13 was damaged by an explosion while on its way to the moon!
(Fits American history timeline and Space timeline.)
When Ekaterina heard of the danger the astronauts were in while in space, she struggled to understand why scrubbing their air of carbon dioxide was so important. What she discovered was the need each of us has to have our own hearts scrubbed clean of a much more deadly poison.
If you are new to this series, visit my introduction to timeline index cards.