Our universe contains many structures, including satellites, planets, asteroids, meteoroids, comets, stars, constellations, supernovae, nebulae, dark nebulae, black holes, blazars, quasars, and dark matter. It is largely unknown to us, and we only understand some basic components like satellites that orbit planets, planets that orbit stars, asteroids and meteoroids that orbit within solar systems, and comets that follow elliptical paths. Stars produce their own light, while constellations are groupings of stars, and supernovae are massive exploding stars. Nebulae are clouds of dust and gas where new stars are formed.

1. 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.

2.  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

3.  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.

4.  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.

5.  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.

6. • 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".

7.  A meteorite goes
towards and
crushes against
the surface a
planet and it can
be disintegrated
completely
The brightnes s is called a
meteor.

8.  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.

9. • 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.

10.  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.

12.  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.

13.  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.

14.  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.

15.  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.

16.  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.

17.  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.

18.  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