Originally, science was the systematic knowledge of the physical or material world gained through observation and experimentation.
However, nowadays, it's filled with mindless follower sheep - just like all religions, however many science sheep are often "hardcore atheists" who look down on other religions, but on the other side of the note, often don't understand science.
I am a proud Agnostic who is open to the concept of religion, but not entirely convinced, before someone thinks I'm some Christian preacher.
Science sheep/atheist: hahahah. you're a mindless, religious person who believes in god. Adam and Eve never started the world, you idiot.
An explosion called the Big Bang did!
Theist: Oh, really? What caused that explosion, then, seeing as you're a scientific expert and all?
Science sheep/atheist: Uhm.............. *walks away*
Science is also sometimes posed in opposition to religion. While the two are not necessarily incompatible, there are several points on which they disagree, and there is also a major difference in their underlying principles: Science fits the theory to the evidence. Religion fits the evidence to the theory.
Contrary to popular belief, a scientist does not (or at least should not) attempt to prove their theories correct, but rather attempt to find any flaw in the theory, so as to gain a better understanding of the fundamental principal being studied
This is an easy way of seeing why Astronomy is a science, while Astrology is now mostly relegated to the horoscopes section of the newspaper.
Newtons laws of motion are science. Frankenstein's monster was SCIENCE!
Performing SCIENCE! occasionally leads to angry mobs attacking your isolated castle, wielding pitchforks and burning torches.
"Nothing is impossible for SCIENCE!"