Rotating Question Curious About Astronomy? Ask an Astronomer

Wouldn't the Big Bang theory be considered a hypothesis and not a theory?

Wouldn't the Big Bang theory be considered a hypothesis and not a theory? In my research done by free will I realized that not much proof has acually been given of this major event in space.

Actually I disagree with that. I think that there is now a lot of evidence in favour of the Big Bang Theory. The difference between a hypothesis and a theory is according to my dictionary:

HYPOTHESIS implies insufficient evidence to provide more than a tentative explanation.

THEORY implies a greater range of evidence and greater likelihood of truth.

I think that there is enough evidence for the Big Bang that it should be called a theory.

1. We can observe radiation left over from the Big Bang in the form of the Cosmic Microwave Background (CMB) and even see fluctuations in that from which it is believed the galaxies formed.

2. The expansion of the universe implies that at some time in the past everything must have been a lot closer together and hotter, which sounds a lot like the Big Bang to me!

3. In GR (General Relativity), there is a theory called the singularity theory which can be used to prove that there must have been a singularity (ie. a Big Bang) at some point in the past for every possible way we know to describe the Universe.

There is probably more evidence I could quote if I thought about it some more, but at least this will give you something to think about.

April 2001, Karen Masters (more by Karen Masters) (Like this Answer)

Still Curious?

Get More 'Curious?' with Our New PODCAST:

More questions about Cosmology and the Big Bang: Previous | Next

How to ask a question:

If you have a follow-up question concerning the above subject, submit it here. If you have a question about another area of astronomy, find the topic you're interested in from the archive on our site menu, or go here for help.

Table 'curious.Referrers' doesn't existTable 'curious.Referrers' doesn't exist

This page has been accessed 29809 times since October 29, 2002.
Last modified: June 4, 2003 9:58:52 PM

Legal questions? See our copyright, disclaimer and privacy policy.
Ask an Astronomer is hosted by the Astronomy Department at Cornell University and is produced with PHP and MySQL.

Warning: Your browser is misbehaving! This page might look ugly. (Details)