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celestial Bodies
CELESTIAL BODIES
Name: Hadeer Mohamed Mohamed
2 Biology English
Dr: Suzan Mostafa
What are the celestial bodies?
Celestial
Bodies
They are bodies swim in space such as stars, planets, moons, and rocky or gaseous bodies.
Galaxy
Galaxies
- They are the greatest units that form the universe.
- They are a tremendous collection of stars.
Ex :
The milky way galaxy
The milky way galaxy
- It is the galaxy that our solar system belongs to.
- It takes an oval shape with coiled spiral arms extend from it.
- The sun lies on one of these spiral arms.
Stars
- When you look at the sky at night you will see a huge number of bright bodies called "stars".
- They are big-sized bodies that emit enormous amounts of heat and light.
Stars
EX:
sun
The sun
- It is the star of our solar system.
- It is the biggest body in the solar system.
- It lies at the center of the solar system and the other bodies of the solar system revolve around it.
Planets
They are 8 spherical opaque bodies revolve around the sun in one direction (anti-clockwise) in semi-circular or oval paths.
Moons
They are followers (small space bodies) that are affected by the gravity of the planets that rotate around them.
Moons
Asteroids
They are rocky space bodies of different sizes and most of them rotate in the region of the belt of the wanderer asteroids.
Meteors
- They are small rocky masses that burn up completely when fall within the atmosphere of the earth as a result of the heat produced from their friction with air.
- They can be seen as luminous arrows by the naked eye.
Meteors
Meteorites
They are large rocky masses that do not burn up completely when the penetrate the atmosphere of the Earth and the remaining part of them falls on the earth surface.
Meteorites
Comets
Tail
Comets
Head
They are masses of rocks, ice and solidified gases that revolve around the sun in more elongated elliptical orbits intersecting with the orbits of the planets.