Tuesday, November 24, 2009

A bit more about Edmond halley

Sir Edmond Halley, a discoverer. Born 1656, he found out in 1705 that a comet was periodic and would make another appearance in 1758. As predicted the comet appeared and then was known as Comet Halley. In 1742 Halley died and never really got to see his prediction come true. Thus not letting him live in the glory of his prediction was right.
in 1716 Haley also suggested that there were two types of diving bells that would enable people to explore the deep sea. Halley investigated different theories and understanding winds and tied He also suggested that the earth is made of concentric spheresthe size of the inner planets each of which might contain life , which as we know today is not true.

Monday, November 23, 2009

Halleys comet formation


the way that halley's comet starts to form begains with a nebul; this is where gas and dust begain to collect. Once the gas and particalls collect they begain to freez in the cold outer solar system, where the object begains to acculrate ( smaller objects begain to fuse to create a bigger whole object.) The comet soon begain to orbit around the sun at a very fast spead that created a tail, of gas and dust left behind.

Monday, November 9, 2009

Planet?


Pluto; a dwarf planet because it does not meet the expectations of a regular planet in our solar system. Over the last few decades sintest have come to the conclustion that pluto is in fact a dwarf planet. The reason that brought them to this conclustion is the fact that pluto does not have a strong enough gravitational pull to clear the neighborhood of its orbit. although it does meet most of the expections of a planet it does not have enough mass for a strong enough gravitaional pull. To be a planet a body needs to meet 3 main expections;
1. it needs to be in orbit around the sun
2. it needs to have enough gravity to pull itself into a spherical shape
3. it needs to have "cleared the neighborhood" of its orbit

Sunday, November 1, 2009

halleys comet fun facts

A second after the big bang, the universe looked like comic clusters forming in space and universe. The universe was much differant from today because now there are differant planets and stars (Comets.) most comets are brown compressed rock shooting through space. kind of like haley comet.