How do scientists explore espace?

How do scientists explore espace?

1. The first space explorers were the first people to look up into the night sky and wonder about the things they saw

   • Early sky watchers had noticed that most objects in the night sky always maintained the same positions with each other.

2. Aristarchus, who lived more than 2,200 years ago, was one of the best astronomers in ancient Greece.

   • He correctly calculated that the Sun was much bigger than the Earth and believed that the Earth moved around the Sun
   • He did not have sophisticated instruments to make measurements and the answers he got were wrong, but his methods were correct.

3. Scientist Galileo Galilei created the first telescopes, after some experiments, Galileo improved the magnification from 3 to 20 times

   • By using it, he discovered mountains on the Moon and spots on the sun.
   • He discovered that Jupiter had moons of its own

4. There is one important thing that limits what can be seen with a telescope in Earth's atmosphere when light passes through gases and dust in the atmosphere. It distorts.

5. The main telescopes are built in the mountains due to pollution, the higher you go, the clearer the air.