Stars are balls of hot gas which can be seen in the sky. They are comprised of mostly hydrogen and helium. Stars are hot and bright since they always use a process known as nuclear fusion. During nuclear fusion, helium is often burned and turns into hydrogen. Once all the hydrogen and helium have burned, the star dies/collapses.
The universe is continually changing, and expanding, hence, each time an astronomer looks into his precious telescope he/she may see something new and magnificent! In a place filled with very much wonder and numerous unknowns, it is no wonder there are multiple facts about stars.
Do you think you know about stars? Think again! Here is a comprehensive list of ten fascinating and mind-blowing facts about stars; some you might already know, and others are going to be entirely new.
Interesting Stars Facts
- The HR diagram or Hertzsprung – Russell diagram is used to compare stars’ temperature and brightness.
- The stars we usually see in the sky are nearly 25 million miles away from Earth.
- The universe has over 200 billion stars.
- The stars don’t twinkle. Actually, it is the turbulence in the sky which makes the stars appear like they are blinking.
- The sun is the smallest star. It is known as a G2 yellow dwarf star. Many other stars are usually red dwarfs.
- When you are staring at stars in the sky you are just looking back in time since the light from the star often takes millions of years to reach the Earth. Therefore, when you look at a star, you are only looking how it looked some years ago.
- There are several different stars’ colors. There are white, red, and blue stars. Hot stars produce blue lights while cool stars look white.
- Small stars often have a longer lifespan than huge stars.
- All stars start their life cycle in a cloud of dust known as nebulae.
- The nearest star to Earth is called Proxima Centauri. It is situated almost 4.2 light-years away from the Earth.