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More about Dark Energy

Just like dark matter, dark energy is there, but we can’t see it. What is it exactly? Prof. Goto will discuss more about dark energy. This video will supplement the …

What is CMB in Astronomy?

We already know that CMB (Cosmic Microwave Background) is the remnant of the Big Bang fireball, and it is emitted from the last scattering surface before the Universe became neutral …

Telescopes: Our Eyes to the Universe

Telescopes serve as our eyes to see the wonders of the universe. Its importance in studying astronomy became evident thanks to Galilei’s records of his observations with his telescope. They …

What is the Big Bang?

The concept of the Big Bang The concept of the Big Bang started after people realized the Universe is expanding. If the Universe is expanding, then its expansion must have …

Is Earth expanding?

The answer, simply put, is no, we are not expanding! If you think the reason for this is gravity, then you’re correct, though only partially. Here, we are going to …

Coincidence/Fine Tuning Problem

Do you think that everything is a coincidence? With our current understanding of the Universe, we were able to found out that we need a certain amount of dark energy, …

Inflation

Inflation is our solution! Earlier, we learned that there are four main problems about the Big Bang Theory: Initial density perturbation Flatness problem Horizon problem Monopole problem All these problems …

4 Problems of the Big Bang Theory

The three main evidences that the Big Bang happened are (1) the expansion of the universe, (2) the Cosmic Microwave Background, and (3) the Big Bang Nucleosynthesis. Despite knowing these, …

The Lithium Problem

The Big Bang Nucleosynthesis (BBN) is a phase a few minutes after the Big Bang, which created the light elements (namely deuterium, helium and lithium). Combining the BBN theory and …

Discovery of CMB

When cosmic microwave background (CMB) was first discovered, no one knew that it was actually CMB! Many scientists have dealt with studying CMB in its infant stages of research. Due …

The Big Bang Nucleosynthesis

The first 1000 seconds that shaped the Universe is called the Big Bang Nucleosynthesis (BBN). In this brief moment, a lot of things happened in the particle scale. Together with …

Future of our Universe (Part II)

Let us continue our discussion about the future of the Universe. What will happen to our Universe after 100 billion years from now? After one googol (10100) years, will there …

Future of our Universe (Part I)

Have you ever wondered what will happen to our Universe in the next millennium? In this two-part video, Prof. Goto will tell us a story about the future of the …