Friday, November 14, 2008

Astronomey Zone


Dark Matter
Dark matter is an explained as unseen matter that could make up more than ninety percent of the universe. As the name implies, dark matter does not interact with light or other electromagnetic radiation, so it cannot be seen directly, but it can be detected by measuring its effects gravitation . It is believed that dark matter was instrumental in forming galaxies early in the Big Bang theory.


Milky Way Galaxy
The milky way galaxy is the home of our solar system The milky way is- a spiral galaxy of at least two hundred billion stars. Our Sun is buried deep within the Orion Arm about 26 000 light years from the centre.

Star Constellations
Any of certain groupings of stars that were imagined by those who named them to form images of objects, mythological figures, or creatures in the sky. They are useful in helping sky gazers and navigators locate certain stars. A constellation's stars are often designated by its name and letters of the Greek alphabet in order of brightness.

Black Hole
black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull

Titan
Is Saturn's largest moon and the only known moon to have a dense atmosphere. Titan is composed of water ice and rocky material. The atmosphere of titan is simply nitrogen and its climate includes methane and ethane clouds


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