You are really ridiculous. Who ever told you that Science
rejects (which is a negative term)?
In the case of astronomy, Science has proven that dark matter
exists. However, whether dark matter results in an implosion at the
end of our universe life is not known right now, given its
limitations, and is placed as a hypothesis.
The Big Bang theory IS a hypothesis (you said so yourself). Science
cannot conclude that it happened. So you reject it?
Reject? You sound more and more like an extremist
Science was never about being negative (like you). Scientists will
only say "We do not have sufficient evidence to conclude", but they
always leave their options open.
To act like you, is to be one where the moment a failure happens,
he stops and says "this is impossible"
Face it, you are only using Science selfishly to be obnoxious, rude
and mean. Can't face your inner demons I supposed...