All of us have seen thousands of stars blinking brightly on a clear night. In this article, we have provided interesting and fun facts about stars, to help you know them better.

Facts About Stars

Stars form a very important part of our solar system. These tiny luminous bodies are actually very large in size and it is only due to their massive distance from earth that they look so small. A star is a huge, shining ball of plasma, whose shine is a result of thermonuclear fusion that takes place within its core. Sun, the centre of our Solar System, is also a star and that too the nearest one. Stars are sources of cosmic energy bodies which comprise plasma, gas and subatomic particles. Stars emit various forms of radiations, ultra violet rays, light, x-rays etc. There is no clue as to how many stars exist in the universe. Speaking of galaxies, there are about 100 billion of them present in the universe and so a single galaxy is expected to have more than 100 billion stars present in each one of them. In case you want to know more about stars, explore interesting and fun facts provided about them, in the lines that follow.
Interesting & Fun Facts about the Stars
  • A star is a colossal, glowing ball of plasma.
  • The star that is nearest to earth is the Sun.
  • Almost all elements that are heavier than hydrogen and helium were created inside the core of stars.
  • The formation of a star begins with a gravitational instability inside a molecular cloud, which is often triggered by shockwaves from supernovae (massive stellar explosions) or the collision of two galaxies (as in a starburst galaxy).
  • Stars are first formed as clouds of gas and dust. In fact, they basically comprise of hydrogen gas.
  • Stars are very hot and give off huge amounts of energy, in the form of heat and light.
  • Stars spend about 90% of their lifetime fusing hydrogen, to produce helium in high-temperature, and in high-pressure reactions near the core.
  • Every star generates a stellar wind of particles that causes a continual outflow of gas into space.
  • Most stars are between 1 billion and 10 billion years old.
  • The oldest star yet discovered is HE 1523-0901, which is an estimated 13.2 billion years old.
  • Huge main sequence stars can have surface temperatures of up to 50,000 K.
  • Stars that have really strong gravity become smaller and smaller with time and eventually, turn into black holes.
  • Stars come in different colors. While hot stars give off blue light, cooler stars give off red light.
  • Some stars are 600,000 times as bright as our sun.
  • All the stars that make up Milky Way Galaxy revolve around the center of the galaxy once every 200 million years or so.
  • Stars twinkle because the light we see coming from them travels through the atmosphere around the earth and there is turbulence in the earth's atmosphere.
  • In case you gather all the stars from the sky and make a big pile out of it, you will get a heap of red dwarfs. Red dwarfs are small stars which weigh less than 50% of sun’s mass and there are more which can weigh as small as 7.5% of the mass of the sun.  
  • The color of the star is directly proportional to its temperature. The color ranges from red to white to blue. As for red, the temperature is less i.e. 3,500 Kelvin whereas for yellow or white stars it is 6,000 Kelvin. Among all the stars, blue is the hottest with a temperature of 12,000 Kelvin.  
  • Some of the stars are called red super giant stars as they are even bigger than the Sun. One of them is called ‘Betelgeuse’ which belongs to the Orion constellation. The size of this star is considered to be about 20 times more than that of the mass of the sun.

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