How Do We Know What The Stars Are Made of?

 HELLO GUYS,

I will be explaining to you how we know what the stars are made of.





Each Star Produces its own individual light. By splitting the light in a spectrum, astronomers can discover the chemical elements in the star’s atmosphere absorb light of different wavelengths. Sodium atoms, for example, only absorb light from the yellow part of the spectrum, called an absorption line, tells scientists that there is sodium in the star. By studying the various lines made on the spectrum, scientists can determine what the star is made up of.


Comments

Post a Comment

Popular posts from this blog

The Book of Invention: The Jet Aircraft

Image
  In 1939, World War Two began in Europe. This war would last for almost five years. In Germany, Hans von Ohain designed and installed a completely new type of engine in an aircraft, an engine which would enable the aircraft to fly at a truly high speed. This was the first jet engine, pushed forward by air which was first sucked up and compressed, and the exhaust gases expelled at great pressure. Two years later, quite independently of von Ohain, an English engineer, Frank Whittle achieved the same results. But the first people to install the new motor in an aircraft were the Germans. Their Messerschmitt Me 262 , used during the last stages of the Second World War, gave the best performance.                 By the end of the War, jet engines had begun to be used in passenger aircraft, too. Now, people could fly at higher speeds and so complete their journeys within an unbelievably short time. Passengers tr...
Read more

How The Solar System Was Formed

Image
  Hello Guys , I will be telling how the Solar System was formed. Our Solar System formed from the force of an exploding star. When some stars reach the end of their lives, they can explode into a supernova, sending shockwaves of energy deep into space. Roughly 4.6 billion years ago, a shockwave from a supernova, travelling at 30 billion kilometers (19 million miles) per hour, hit a cloud of ice, dust and gas. The force of the impact caused the cloud to flatten and rotate. From the spinning disc, our Solar System began to form
Read more