You may think that time started 13.8 billion years ago at the birth of the universe, but physicists with alternative ...

Evidence supporting this theory includes the cosmic microwave background, a faint "echo" of the universe's early expansion that scientists can study in detail. While the Big Bang Theory is widely ...

By looking ever further back in time, the James Webb Space Telescope is at last revealing the first galaxies – and a very ...

The Big Bang Theory universe is expanding with a brand new spin-off – and a former character will be making a return.It was ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Another former "Big Bang Theory" cast member has signed on to the spinoff series currently in the works at Max.

The Hubble tension just got tenser — with new measurements revealing that the universe is expanding faster than ... just 380,000 years after the Big Bang. As Cepheids get brighter, they pulsate ...

Approximately 13.8 billion years ago, the universe originated from a singularity, swiftly expanding and cooling to create the ...