Pondering the scale of the cosmos can feel as if you’re peering over the edge of the brink; it can be daunting enough to make you want to flee to the comforts of working, commuting, and other quotidian endeavors.
In the 95 years we’ve known about antimatter, physicists have not tested how the elusive inverse of ordinary matter is affected by gravity, the force that pulls masses to Earth and seems to affect all things in the classical realm.