Note: For a definition of unfamiliar terms, see our glossary. The fundamental particles of the universe that physicists have identified—electrons, neutrinos, quarks, and so on—are the "letters ...

Then the gas began to condense into the billions of ... free for the formation of another generation. By evolutionary theory, the universe should contain an unchanging amount of material.

The potential for what string theory could help explain is huge. It could reveal what happened at the moment the universe began. The big bang theory only describes what happened after the first ...

Put simply, around 14 billion years ago, all matter and energy in the universe was at a point of ... The Big Bang theory is supported by evidence that space is expanding, including the redshift ...

In the 1960s, he discovered that although the universe looks like it is static, it is in reality constantly expanding. His theory is based on the fact that this rapidly expanding universe is the ...

who is considered the father of the Big Bang theory, was just a “story” and not a scientific fact. According to Lemaitre, the universe began with an explosion from a single particle at a ...