The evolution of the Universe. Credit: NASA Astronomers think that the Universe started with a giant explosion called the Big Bang.Why do we think this? Well, we know from looking at the redshift of distant galaxies that the Universe is expanding.

What started the birth of the universe? According to physics, the universe sprang into existence from a singularity — a term physicists use to describe regions of space that defy the laws of physics. Fish mania free download. They know very little about singularities, but it's known that such regions exist in the cores of. It's a region where all the mass gobbled up by a black hole gets squeezed into a tiny point, infinitely massive, but also very, very small. Imagine cramming Earth into something the size of a pinpoint. A singularity would be smaller.

First, the infant universe was initially so hot and dense that even such as protons and neutrons could not exist. Instead, different types of (called matter and anti-matter) collided together, creating pure energy. As the universe began to cool during the first few minutes, protons and neutrons began to form.

Slowly, protons, neutrons, and electrons came together to form hydrogen and small amounts of helium. During the billions of years that followed, stars, planets, and galaxies formed to create the current universe. So, back to Penzias and Wilson and the CMB. What they found (and for which they won a ), is often described as the “echo” of the Big Bang. It left behind a signature of itself, just like an echo heard in a canyon represents a “signature” of the original sound.

The difference is that instead of an audible echo, the Big Bang's clue is a heat signature throughout all of space. That signature has been specifically studied by the Cosmic Background Explorer (COBE) spacecraft and the. Their data provide the clearest evidence for the cosmic birth event. Some theorists argue that the Big Bang theory is based on a false premise — that the universe is built on an ever-expanding space-time. They suggest a static universe, which is what was originally predicted by Einstein’s theory of. Einstein’s theory was only later modified to accommodate the way the universe appears to be expanding. And, expansion is a big part of the story, particularly as it involves the existence of.

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Finally, a recalculation of the mass of the universe seems to support the Big Bang theory of events.