THE UNIVERSE, A GREAT MYSTERY

OUR UNIVERSE A GREAT MISTERY FOR ALL OF US

Our Universe is the whole space and time, all forms of matter,

energy and time, laws and physical constants that control

them.

Structure Universe is something totally unknown to mankind. We

don’t know it certainly. We only know very little data about this, it is said there are different universes, but we know that there are structures added to universe, some are as follows:

1.Satellites 6.Stars 11.Black holes 2.Planets 7.Constellations 12.Blazars 3.Asteroids 8.Supernovae 13.Quasars 4.Meteorites 9.Nebulae 14.Dark materia 5.Comets 10.Dark nebulae

1. SATELLITES A satellite is something orbiting a

planet. A satellite is usually smaller than a planet and accompanies it in its translational movement. The satellite of The Earth planet is the Moon.

2. PLANETS A planet is a celestial body that orbits a

star, which has a spherical body and has an orbital dominance. The planets of our universal system are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Urano and Neptune.

3. ASTEROIDS

An asteroid is a chondrite or metallic rock . Asteroids are also called planetoids or minor planets, which include them in the same category with the comets and those trans-Neptunian bodies.

4. METEOROIDS

• A meteoroid is a sand to boulder -sized particle of debris in the Solar System. The visible path of a meteoroid that enters Earth’s (or another body's) atmosphere is called a meteor, or colloquially a shooting star or falling star. If a meteoroid reaches the ground and survives impact, then it is called a meteorite. Many meteors appearing seconds or minutes apart are called a meteor shower. The root word meteor comes from the Greek meteo¯ros, meaning "high in the air". "a solid object moving in interplanetary space, of a size considerably smaller than an asteroid and considerably larger than an atom".

4. METEORITES A meteorite

goes towards and crushes against the surface a planet and it can be disintegrated completely The brightnes s is called a

meteor.

5. COMETS Comets are

celestial bodies consisting of ice and rocks. they follow different paths: elliptic, parabolic or hyperbolic. Comets are solid bodies divided into hair and tail, both of them composed of gas and dust.

6. STARS• A star is a celestial body that emits light

itself. They are objects of huge masses. The radio, temperature and luminosity of a star can be related through their approximation to blackbody.

7. CONSTELLATIONS The constellations are a group grouping of

stars, which are apparently formed, and they are next to stars in the night sky. The constellations give rise to the zodiac.

8. SUPERNOVAE A supernova is a stellar explosion that can

be seen very significantly, even to our eyes. They are massive stars that cannot develop thermonuclear reactions in their core.

9. NEBULAE

Nebulaes are regions of the interstellar medium formed by chemical elements heavy in their shape of cosmic dust and gas (mainly hydrogen and helium). They have a remarkable cosmological importance, because many of them are the places where stars are born.

10. DARK NEBULAE A dark Nebula an accumulation of gas and

interstellar dust are not related to any Star or away from these, so they do not receive their energy, by which its presence only is noticed by contrast to a more distant than the Nebula populated star Fund.

11. BLACK HOLE A black hole is a region of space-time caused

by large concentrations of mass in its interior, with huge increase in density, which generates a gravitational field such that no material particle, not even the photons of light, they can escape from that region.

12. BLAZAR A blazar is a source of energy very compact

and highly variable, associated with a black hole at the center of a Galaxy. Blazars are among the most violent phenomena in the universe.

13. QUASAR A quasar is an astronomical source of

electromagnetic energy, including radio frequencies and visible light. They are extremely light, allowing his vision despite its distance, and very compact, it would be the cause of the rapid changes in the magnitude of brightness.

14. DARK MATTER Dark matter that does not emit

electromagnetic radiation enough to be detected with current technology, but its existence can be inferred from gravitational effects that cause the visible matter. Dark matter should not be confused with dark energy

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