Antimatter in a sentence as a noun

It's not like you tap the antimatter and the motion goes backward in time.

If you were holding onto a chunk of antimatter you would probably be missing a hand.

The consensus seems to be that antimatter will behave 'normally'.

I read somewhere that there are no antiphotons and antimatter emits light just the same as normal matter.

There's also the possibility of a much larger universe filled with "cells" of matter and antimatter.

The majority of stuff presented there requires antimatter spherical cows in vacuum to work.

$100 says antimatter is also attracted by gravity.

From the article:"The long term storage of significant amounts of antihydrogen should soon settle the question of whether antimatter falls up or down.

"One reason they would like to know if antimatter is repelled by gravity is that it could explain why the Universe is expanding at an accelerating rate.

Given that antimatter explodes violently when put into contact with regular matter, I kind of hope that's not how they go about achieving this.

This means that an antimatter region somewhere out there would react at the boundary with an adjacent matter region and this reaction would put out radiation that we can measure.

We can invalidate the idea of antimatter galaxies indirectly.

Apparently even very thin interstellar gas would generate a lot of energy in matter/antimatter annihilations.

It is true that antimatter bears certain resemblances to matter traveling "backwards in time" when the math is examined, but the mental images conjured up by a plain-English reading of that phrase are almost entirely wrong.

While a hypothetical antimatter galaxy puts out the same light as a matter one and probably looks exactly like normal matter from the outside, there is a telltale signature: it would put out additional gamma rays.

An explanation I have heard from a physisicist is: if there were regions of the universe where antimatter is dominant, the boundaries where they border normal matter space would be extremely bright from the annihilation reactions.

Antimatter definitions

noun

matter consisting of elementary particles that are the antiparticles of those making up normal substances