Stephen Hawking Quotes

Sure, nobody will make a fortune if we figure out why the Big Bang happened. But just about everyone would like to know.

There was no 'before' the beginning of our universe, because once upon a time there was no time.

'What was there before the Big Bang?' That's a question that both kids and adults love to pose to anyone who seems sympathetic. After all, if the universe has only been around for roughly 14 billion years, isn't it legitimate to ask what was in existence before the mother-of-all-events cranked up the cosmos?

In the beginning there was nothing, which exploded.

This fact immediately suggested a singular event - that at some time in the distant past the universe began expanding from an extremely small size. To many people this inference was loaded with overtones of a supernatural event - the creation, the beginning of the universe.

The predominant theory of the origin of the universe is the Big Bang.

Physicists explain creation by telling us that the universe began with the Big Bang, an intense energy singularity that continued expanding. But who created the singularity?

Physics grapples with the largest questions the universe presents. 'Where did the totality of reality come from?' 'Did time have a beginning?'

First of all, the Big Bang wasn't very big. Second of all, there was no bang. Third, Big Bang Theory doesn't tell you what banged, when it banged, how it banged. It just said it did bang. So the Big Bang theory in some sense is a total misnomer.

Because there is a law such as gravity, the universe can and will create itself from nothing.

There is no rational reason to doubt that the universe has existed indefinitely, for an infinite time. It is only myth that attempts to say how the universe came to be, either four thousand or twenty billion years ago.

There may be many Big Bangs that happened at various and far-flung locations, each creating its own swelling, spatial expanse, each creating a universe - our universe being the result of only one of those Big Bangs.

We people of the Earth exist because our potential was there in the Big Bang, 13.7 billion years ago, as the universe exploded into being.

Scientists - who prefer explanations subject to laboratory tests - figure that everything we see today was as inevitable as wrinkles, once the Big Bang established physics. Stars and planets were cooked up as huge clouds of matter collapsed and coalesced.

Of course, we would love to know more about the exact moment of Big Bang, but interposing an outside intelligence does nothing to add to that knowledge, as we still know nothing about the creation of that intelligence.

If we do get a quantum theory of spacetime, it should answer some of the deepest philosophical questions that we have, like what happened before the big bang?

We'll have four different gravitational wave windows open within the next 20 years, and each of them will see something different. We'll be probing the birth of the universe with this. The so-called 'inflationary era' of the universe. We'll be probing the birth of the fundamental forces and how they came into being.

Every time we get a story that says there was a Big Bang, then people want to know what was before that. And if we find out, what was before that?

In three minutes, 98 percent of all the matter there is or will ever be has been produced. We have a universe

I was an infinitely hot and dense dot.

The Big Bang theory is the idea that if we go back early enough in the history of the universe - and we can do this, of course, by looking at starlight coming to us from billions of years ago - we will see a very hot and dense period where the universe was much smaller, denser, and hotter.

For years, my early work with Roger Penrose seemed to be a disaster for science. It showed that the universe must have begun with a singularity, if Einstein's general theory of relativity is correct. That appeared to indicate that science could not predict how the universe would begin.

They say it all started out with a big bang. But, what I wonder is, was it a big bang or did it just seem big because there wasn't anything else drown it out at the time?

A universe that came from nothing in the big bang will disappear into nothing at the big crunch. Its glorious few zillion years of existence not even a memory.

I don't even really know what the big bang is, and so when people want to go through and say, 'Well, I believe that the universe started by God starting it,' that's fine by me.