NASA spacecraft will slam into an asteroid Monday — if all goes right September 25, 2022 +2 and the laws of gravity and motion don’t change at the last minute If everything goes as planned Science the asteroid collision will happen at exactly 7:14:23 EST. Washington Post and the laws of gravity and motion don’t change at the last minute If everything goes as planned Science the asteroid collision will happen at exactly 7:14:23 EST. Washington Post