Monday, November 23, 2009

Asteroid Formation


After the big bag occurred billions of years ago asteroids were the leftover material left in the universe. It all started with the supernova. They orbit the sun just like the eight planets do. Some asteroids could be as large as 700 km. or as small as 1 km. Unlike the planets, asteroids move in an Asteroid belt between Jupiter and Mars. There is a very little chance that an asteroid would hit earth because it is too small to make through earths atmosphere. Asteroids are very rocky and icy bodies so they could be dangerous.

Monday, November 9, 2009

Planet?



Over the last few decades scientists have studied and researched the Solar System.
Suddenly they found out that Pluto is not considered a planet anymore and I will tell you why
in the following reasons. To determine if a body in the universe is a planet they have to pass through three rules. The first one is that it needs to be in orbit around the sun. The second is that it needs to have enough gravity to pull itself into a spherical shape. And the third is that it needs to have "cleared the neighborhood" of its orbit. Pluto has the first two rules but on the third one it does not. Eris, is another reason why Pluto is not a planet.

My body, Hermes asteroid is not considered a planet because it does not pass any of the rules. It does not orbit the sun, it does not have enough gravity to pull itself into a spherical shape, and it can't clear the neighborhood of its orbit.

Wednesday, November 4, 2009

Hermes Asteroid's Size


The diameter of Hermes asteroid is 0.9 km. The sun is 1,391,000 km which is 1545555.55 times bigger then Hermes asteroid. This means that over one million Hermes asteroids fit inside the sun.

The Sun is definitely bigger then all of the other planets and compared to them Hermes Asteroid is extremely small!