Current Cosmology
Here is the current cosmology as mentioned below.
- Stars are like big balls of gas that shine brightly because of nuclear reactions. Gravity pulls them inward, but the energy from fusion pushes them outward, making them stable in size and temperature.
- Galaxies are huge collections of stars, gas, dust, and dark matter held together by gravity. They can have massive black holes at their centers. Scientists think there could be trillions of galaxies in the universe we can see.
- Planetary systems are made up of planets, moons, asteroids, and comets orbiting around stars. Some stars have planets orbiting them, and some planets are even found in systems with multiple stars.
- Life is most likely to exist on planets, although moons might also support it. Some planets don’t orbit any star at all.
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?
Contact Us