sillygoosegirl (![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
sillygoosegirl) wrote2006-04-10 02:51 pm
sillygoosegirl) wrote2006-04-10 02:51 pm
Entry tags:
(no subject)
I have a very important question for people who know more about astronomy and astrophysics and particle physics than I do. How do we know that other galaxies are not made up entirely of anti matter?
I've read many places that more matter was created in (or right after) the big bang than anti matter, but I've never heard an explanation as to why or how this is believed to have happened, only that it seems it must have happened because the universe has so much more matter than anti matter in it. That is a pretty unsatisfactory answer and it also just begs the question, how do we know those other galaxies are made up of matter and not anti matter?
They seem like they are awful far away for us to be able to look through our telescopes and see what the charges on the elementary particles are...
This has really been bugging me lately...
I've read many places that more matter was created in (or right after) the big bang than anti matter, but I've never heard an explanation as to why or how this is believed to have happened, only that it seems it must have happened because the universe has so much more matter than anti matter in it. That is a pretty unsatisfactory answer and it also just begs the question, how do we know those other galaxies are made up of matter and not anti matter?
They seem like they are awful far away for us to be able to look through our telescopes and see what the charges on the elementary particles are...
This has really been bugging me lately...