Samantha+and+Krysta

Seasons and Earth

Why do we have seasons on [|Earth]? We have seasons on Earth because the Earth tilts on it's axis. When the Earth is tilted towards the [|sun] it is summer. When the Earth is tilted away from the sun it is winter.When the Earth is sitting up and down it is spring or fall. Galaxies

How many galaxies are there? There are at least a trillion [|galaxies] in the [|universe] .says wiki answers. http://wiki.answers.com/Q/How_many_galaxies_are_there&alreadyAsked=1 A galaxy is a large system of [|stars]. Stars are balls of gas. There are a lot of galaxies. [|Facts about galaxies]

Comets

What is a comet? A [|comet] is a mixture of ice and dirt. Wiki answers says that comets are often refered to"Dirty Snow balls". http://wiki.answers.com/Q/What_is_a_comet&alreadyAsked=1 Comets often orbit the sun. "Comets are left over from the formation of stars and planets billions of years ago ." Says wiki anwsers. [|Facts about Comets]

The Sun

What is the sun?

The    [|sun] is a star in the center of the solar system.The oxygen on the sun is 0.77%. The sun is 4.5 billion years old. The sun is what keeps Earth warm. The sun is one of the most common stars.

[|Facts about the sun]

[|Black Holes]-

What is a black hole?

A black hole is a part of space wich has a feild of gravity that is so powerful that nothing can escape it. To escape a black hole you woild have to move faster than the speed of light.