Astronomy is the study of extristial events and objects. People who study astronomy are called Astronomers. For many years, astronomers have studied about astronomy, finding out new info on stars, planets, galaxies and many more stuff.
What Exactly is Astronomy?
How It All Started
There have been people studying all about astronomy since the ancient times. They used the stars to help navigate them on sea and land. There are many people who studied about the stars and galaxies such as the Akkadian astronomers that are credited with being the first people to keep astronomical records. Then the Babylonians used the Akkadians' records to predict the movement of the Sun and Moon.
After that the Egyptians were the first one to create the first accurate calendar. Italian scientist Galileo Galilei was one of the first to use a telescope to observe the stars. English physicist Isaac Newton identified the laws of physics that helped explain the movement of Earth and other planets, which helped the field of astronomy grow.
Hubble Space Telescope
The Hubble Space Telescope was named after the American astronomer Edwin P. Hubble. It was first launched in April 24, 1990. The telescope was supposed to orbit 353 miles above Earth and was scheduled to remain in space for 15 years but had problems after they put it into orbit. Nontheless, useful info was gathered.
The Big Bang Theory
What is the Big Bang Theory. It´s in fact not the popular telivison show but the most likely scientific explanation about how the universe was born. Scientists believe that approximately 13.8 billion years ago all the matter in the universe was squeezed into a very small and very hot point. Then it began to expand out in all directions and the universe was so hot that atoms could not form and light could not shine. It would take a many millions and billions of years for the universe to expand and cool. Cool enough so stars and planets to form.