Wednesday, October 28, 2009

Trip To AMNH

Recently, the eighth grade went to the AMNH. We first watched a movie about the Big Bang theory where we learned about how the universe developed from a much hotter and smaller condition compared to today. We walked down a staircase that showed what the universe looked like 13 million years ago. As we walked down each step, we could see the change in time from when the universe first started until the present. We also visited the Hall of Meteorites, where we studied and observed many different meteorites. One meteorite was named Ahnighto that was found in Green Land. It's weight was a massive 34 tons. The Meteorites gave a history and background of many planets in our Solar System. We also watched a movie about stars. It showed how stars, including the Sun, was born and how they die.

I learned a lot at the AMNH. The big bang occurred thirteen million years ago. Then in another million years, the universe expanded. Nine million years ago, the Milky Way formed. Five million years ago, the Solar System formed. Then two million years ago, oxygen developed and one million years later, Dinosaurs were born. I also learned more about stars.

I still have some questions though. I am studying a star system, called Alpha Centauri. I already know that it was discovered by Father Richaud, but want to know more. What kind of materials did he need to discover Alpha Centauri other than a telescope? Also, who is this Father Richaud guy? What else has he discovered and how famous was he?

Tuesday, October 20, 2009

Father Richaud's Discovery


Father Richaud was a man who was the discoverer of the Alpha Centauri. It was founded by him in December of 1689. It was discovered while Father Richaud was observing a comet. French astronomer, Abbe Nicolas Louis de Lacille later made some measurements using a meridian circle which is an instrument used for observing the time of stars passing the meridian.
Source:Wikipedia
http://en.wikipedia.org/wiki/Alpha_Centauri