Question

Explain what is antimatter.
Also explain the Big Bang theory.(Long answers)

Answer 1

the big bang theory.. the most accepted theory which defines how the universe formed .. the big bang theory states that the whole universe was concentrated in a dense point from which it burst and all the matters spread throughout to form planets, stars, asteroids, dwarf planets etc..
antimatter... matter consisting of elementary particals which are the antiparticle of those making up normal matter.
hope it will help you.

Answer 2

Well it is said that during the Big Bang, things were created in pairs: one matter and one anti-matter. I think its a part of the Big-Bang Theory.

It is also said that matter + anti-matter - Energy

Then shouldn't it be so that there would have been no matter or antimatter in existence now since all of them should have reacted to form pure Energy. I mean how were we created then?

And also where are all the antimatter gone now? Are they still reacting with us?

Thanks