What existed before the Big Bang? - BBC
Strangely enough, some cosmologists believe a previous, cold dark empty universe like the one which lies in our far future could have been the source of our very own Big Bang. The first matter....
Stephen Hawking Says He Knows What Happened Before the Big Bang
2018年3月2日 · At the time of the Big Bang, all the matter in the universe was smooshed into an incredibly hot, infinitely dense speck of matter. But what happened before that? It turns out, famed physicist...
What Existed Before the Big Bang? - HowStuffWorks
2023年9月6日 · Roughly 13.7 billion years ago, the entire universe existed as a singularity, a point smaller than a subatomic particle, according to the Big Bang theory [source: Wall]. But what existed just before that moment? Did Our Universe Bubble Out of a Previous One? The question predates modern cosmology by at least 1,600 years.
What happened before the Big Bang? - Live Science
2020年4月21日 · In the beginning, there was an infinitely dense, tiny ball of matter. Then, it all went bang, giving rise to the atoms, molecules, stars and galaxies we see today. Or at least, that's what we've...
What was before the Big Bang? Everything you need to know
Around 13.82 billion years ago, matter, energy, space – and time – erupted into being in a fireball called the Big Bang. It expanded and, from the cooling debris, there congealed galaxies – …
The Myth Of The Beginning Of Time | Scientific American
2006年2月1日 · Most cosmologists insisted that it simply made no sense--that to contemplate a time before the big bang was like asking for directions to a place north of the North Pole. But developments in...
What Came before the Big Bang? - Scientific American
2014年8月1日 · Our universe may have started not with a big bang but with a big bounce—an implosion that triggered an explosion, all driven by exotic quantum-gravitational effects. Atoms are now such a...
What happened before the Big Bang? - Live Science
2019年4月17日 · Before the bang. It's possible that before the Big Bang, the universe was an infinite stretch of an ultrahot, dense material, persisting in a steady state until, for some reason, the Big Bang...
What Came Before the Big Bang? - WIRED
2024年6月23日 · About 13.8 billion years ago, the entire cosmos consisted of a tiny, hot, dense ball of energy that suddenly exploded. That’s how everything began, according to the standard scientific story of...
What Happened Before the Big Bang? - Center for Astrophysics
2019年3月25日 · A team of scientists has proposed a powerful new test for inflation, the theory that the universe dramatically expanded in size in a fleeting fraction of a second right after the Big Bang. Their goal is to give insight into a long-standing question: what was …