Sentences with phrase «expanded after the big bang»

Inflation handily explains how the universe expanded after the big bang.

Not exact matches

After the mysterious big bang the universe began to expand outward creating space, time, and the galaxies.

«If we know the initial amounts of stuff in the universe, such as dark energy and dark matter, and we have the physics correct, then you can go from a measurement at the time shortly after the big bang and use that understanding to predict how fast the universe should be expanding today,» said Riess.

Physicists hailed the discovery as preliminary confirmation of inflation, the idea that for a sliver of a moment after the big bang, the universe expanded at blistering speed.

According to the big bang theory, for the first 380,000 years after the big bang, the expanding universe was so hot that all matter was ionized.

No explanation has been found.18 Most big bang theorists assumed that radiation from the earliest stars and galaxies — after the universe had already expanded for hundreds of millions of years — was powerful enough to reionize the IGM.

Had the universe been slightly denser by one part in 1062, the expansion would have slowed and collapsed back on itself in a «big crunch» after 13.7 billion years (today's age of the universe according to the big bang theory).60 Had the universe been slightly less dense by one part in 1062, «the universe would have expanded «so quickly and become so sparse it would soon seem essentially empty, and gravity would not be strong enough by comparison to cause matter to collapse and form galaxies.61 The stretching explanation does not have this problem.

Here's the problem for those who believe a big bang preceded the formation of black holes, stars, and galaxies: black holes are too small to affect something as huge as a galaxy that formed long after the universe expanded, and there is no reason a galaxy should form a large central black hole.