Matter and antimatter respond to gravity in the same way, study finds

Matter and antimatter behave the same way under the influence of gravity, a new study found, leaving scientists no wiser as to what makes the two different. 

Antimatter is the puzzling stuff created during the Big Bang together with normal matter. It is virtually normal matter’s mirror — exactly the same, only with the opposite electrical charge. For every proton, there should be an antiproton, for every electron an antielectron, which is also known as a positron.