Ben HoustonThe flight of NASA's Artemis (purple) uses two very close encounters with the moon's gravity (green) to changes its trajectory to get back to the earth (blue.) Amazing.
More details: https://www.nasa.gov/artemis-1
Jason Becker@BenHouston3D it’s pretty wild to watch this and think, “I technically know all of the math required to figure out how to do this, and yet, I never could put it together to do this.”