Origin of Universe
On the basis of Big Bang theory, scientists explain how the universe started. They think everything in the universe used to be soft as a tiny hot ball. About 13.8 billion years ago, everything began from a tiny, super hot, and packed point called a singularity. From there, the universe spread out and cooled down, forming galaxies, stars, and planets. Many scientists think this is how the universe began. When neutral atoms formed, they released light particles called photons. We can still see these photons today as the cosmic microwave background (CMB).
Origin of Universe : Big Bang theory & Current Cosmology
Origin of Universe: The story of how our universe began starts with a big event called the Big Bang theory. According to the Big Bang theory, everything began from a tiny and super hot point. From there, everything expanded fast by creating atoms. Most of the stuff in the universe is made of hydrogen, about 74% of it. This expansion has been happening for about 13.8 billion years, and now it seems like it is getting faster. However, some people disagree with the Big Bang theory.
They say it is based on the wrong idea that the universe is always expanding. They believe the universe is just staying the same which implies the early thoughts of Einstein. Later on, Einstein realized that the universe was getting bigger, but he had to change his theory to fit that idea. Our Solar System is a galaxy that is called the Milky Way. It has eight planets, including Earth, that go around the Sun. Besides the planets, there are also smaller things like asteroids, meteoroids, and comets flying around.
In this article, we are going to discuss the origin of the universe in detail. Let’s explore.
Table of Content
- Origin of Universe
- Origin of the Universe Theories
- How Old is the Universe?
- Big Bang Theory
- Importance of Big Bang Theory
- Current Cosmology
- Missions to Study Big Bang
- Will the Universe Expand Forever?
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