Matter

What is the Sun?

Submitted by NSOJenny on Wed, 18/10/2023 - 14:54

What Can We See on the Sun?

Submitted by admindev on Wed, 30/03/2022 - 15:24

What is Gravity?

Submitted by admindev on Tue, 29/03/2022 - 08:48

Masatoshi Koshiba

Masatoshi Koshiba
Credit: 首相官邸ホームページ

Occupation: Astrophysicist

Year born: 1926

Research Areas: Neutrinos, Detectors, Particle Physics, Cosmic Rays

Cecilia Payne-Gaposchkin

Occupation: Astronomer

Year born: 1900

Research Areas: Stars, Spectroscopy

Where was the Big Bang?

Where did the Big Bang take place? If the Universe is expanding, where is it expanding from? These are very good questions, but the answer might seem confusing. The answer is...everywhere!

It is all in the dimensions!

The Universe began with the Big Bang about 14,000 million years ago (14,000,000,000 years). When it was young, the Universe was very, very hot and dense. Since then, it has been cooling down and getting bigger.

Evidence for the Big Bang

Astronomers think the Big Bang is the best way to explain how the Universe started and how it changed over time. All science is based on evidence. So what is the evidence for the Big Bang?

Big Bang

The evolution of the Universe.
Credit: NASA

The Big Bang is the explanation for how the Universe started. Astronomers think that everything started in a single point. Then everything expanded and stretched to grow into the huge Universe we see today.