Astronomy

Hello, my name is Elsa and I'm going to teach you what astronomy is and what it was used for long ago.

In ancient times clocks and calenders didn't exist, so people would have to see the way shadows were pointing like we use compasses, clocks and calenders to tell what time it is and what direction we are going.

Today, me and my mom did a science experiment to tell time like ancient people. The experiment is: You take a big piece of paper and a ball of clay. Put the paper in the sun outside and put the clay in the middle of the piece of paper. Poke a long stick in the clay so it stands up. Then grab a compass. The shadow should point in the same direction as the N on the compass. This must be done at noon to one o'clock. When we tried it worked perfectly. Later on at night we went outside to try to see the Big Dipper.

The Big Dipper told people from ancient times what season it was because of how it changes in the sky. Right now in September it stands upright.

The first astronomers name was ptolemy, he believed that the moon, sun and stars circled the Earth and that the Earth stood still. The second was Galileo, he invented the first telescope using lenses. The third astronomer was Isaac Newton, he invented a telescope using mirrors instead of lenses.

Well it was fun writing about astronomy. I hope you enjoyed it and learned a lot.