A cosmological model for the Universe, describing an event billions of years ago that allowed for the existence of atoms and life. It is commonly misunderstood by ignorant people who think it began at a single point in space, appeared out of nowhere or was an explosion.

The Big Bang actually refers to a point in the Universe when it was extremely dense, but infinitely large. About 13.8 billion years ago, matter in the Universe was much closer together and space was mostly filled with an opaque plasma of light and electrons (the Photon Era). As a result, everything was unimaginably hot, and some scientists think that this heat led objects to move away from each other (hotter things expand).

While there may have been infinite matter, there is even more space through which objects can move apart. This allowed matter to continue moving away from other matter and, as a result of the expansion, the Universe began to cool down. Atoms were able to form and eventually stars and galaxies followed. In essence, one can say the Big Bang occurred everywhere; all matter moved away from each other in the tightly packed Universe.
Ignoramus: the big bang was impossible, matter can't explode from nothing!1!
Scientist: Ugh...
by Pie Stealer February 22, 2016
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A gang war between to dinosaurs. Tron the T-Rex, and Marquez the Stegasaurus engaged in what was one of the biggest gang wars of all time. Tron wanted his rock shipment and Marquez did not give it. During this battle, The SpawnofSkeeb was injured in this battle.
The Big Bang was the biggest gang war of all time.
by Pmay0 March 10, 2005
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It's when you're fucking a chick from behind, and right as you're about to blow, you smash a watermelon over her head, yell "BANG" and cum all over the back of her head.
Dude, so last night I gave Patty the Big Bang, it was epic!
by mikami_teru_674 September 9, 2010
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Either 6.5, 8.9, or 13.7 billion years ago (they keep rescheduling it), nothing blew itself up.
After the explosion, once the smoke had all faded and the dust had settled, a countless number of galaxies, systems, stars, and planets covered a presumed infinite amount of space.

What the hell?
"Hey, we currently have no explanation for the beginning of the universe, man."
"Well, just pick from the existing ones."
"We could do that, but, uh, sir..."
"What?"
"They all involve the supernatural and/or some sort of deity(s)."
"Holy crap! Heaven (which I don't believe exists) forbid we actually believe there are greater forces in the world than ourselves (arrogant brats aren't we?)! Quick, make something up!"
"How about... I know! A massive explosion created everything! We'll call it the 'Big Bang'."
"Think anyone will buy that?"
"If we come up with a bunch of nonsensical yet complex equations to back it up, yes."
"Do it."
by STJosh April 24, 2007
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#1: Orgy

#2: A massive explosion

#3: Before the beginning (what?) there was nothing, and it exploded (what?).

In order for something to exist or happen three things are required: Time, Dimensions and Matter. In nothing these cannot exist, and yet apprently the Universe existed in the form of an infinetly dense, infinetly heavy thing - which should've made a black hole, but didn't. Also something triggered the Universe to start expanding, Scientists don't know what that was (admit it). Also according to the Law of Angular Momentum all fragments that are expelled from an object spin the same direction as the object. Saturn, Uranus, several moons and a couple of glaxies spin "backwards". Also according to the Second Law of thermodynamics all objects in a Closed System (the Universe), go from Order to Disorder. An explosion is not order it is disorder (Did the Atomic bomb dropped on Hiroshima create order? No it did not.). Yet the universe has been operating just fine for billions of years, with 0 sign of disorder. So in order for the Big Bang to occur it would have to disobay a bunch of scientific laws. But still scientists believe it.

Some creationists say that the Earth is ~6000 years old. Nowhere in the bible does it say that. Genesis 1:1 says "In the beginning God created the Heavens and the Earth." Then on the first creative day God made the Earth inhabitable (water, atmosphere etc.).

People say that the Bible is unscientific, that is not true. The ark that Noah built was a box, a very big box. Are there any ships that are basically boxes? Yes container ships. Noah was an amutuer and his design worked very well. The bible described the water cycle long before any scientist. Historically the Bible is true as well. It described the city of Ninevah - the Bible is the only book to describe this city, and it does exist. Archeologists discovered it in the 1840's. The city of Babylon has been discovered , and the Bible talks about it. Unscientific? I think not. Not Historical? I think Not.
Seriously the Big Bang is a big pile of nonsense.
by A competant person September 21, 2008
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guy: I feel akward talking about the 'you know what' in public.
girl: well...then call it big bang.
by Offlineuser1 January 18, 2009
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the universe was not created by the Big Bang, it was created when reptilians ruled the void and decided they wanted some ass, that is why they infiltrated earth to get some potato chips but then they teamed up with the Illuminati to eat babies.
our lord reptilians created the universe not a silly "Big Bang"
by reptilian bois September 14, 2018
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