What was the original universe like before the Big Bang?

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 been told by physicists for the past several decades.

What happened to the universe shortly after the Big Bang?

In the first moments after the Big Bang, the universe was extremely hot and dense. As the universe cooled, conditions became just right to give rise to the building blocks of matter – the quarks and electrons of which we are all made. As the universe continued to expand and cool, things began to happen more slowly.

What evidence supports the expansion of the universe from the Big Bang?

The evidence that the universe is expanding is shown with the red-shift of light, the finding of cosmic background radiation that is left over from the initial heat of the Big Bang and the amount and types of elements in the universe that are almost exactly the amounts predicted by the theory.

Will the universe ever stop expanding?

Some 13.8 billion years ago, our universe was born in the Big Bang, and it’s been expanding ever since. Until a few decades ago, it looked like that expansion would eventually end. Astronomers’ measurements suggested there was enough matter in the universe to overcome expansion and reverse the process, triggering a so-called Big Crunch.

What is the Big Bang theory?

The Big Bang is a theory that describes the beginnings of our universe. It contends that the universe began with a primordial explosion that occurred about 13 billion years ago. The original core of the explosion was very small and tremendously hot, composed entirely of high-energy radiation.

How did gravity help the universe survive early expansion?

In a new study in Physical Review Letters, the team describe how the spacetime curvature – in effect, gravity – provided the stability needed for the universe to survive expansion in that early period. The team investigated the interaction between the Higgs particles and gravity, taking into account how it would vary with energy.

What will be the universe’s final temperature?

At this point, the universe’s final temperature will hover just above absolute zero. Some 13.8 billion years ago, our universe was born in the Big Bang, and it’s been expanding ever since. Until a few decades ago, it looked like that expansion would eventually end.