The solar system consists of the Sun and everything that orbits it, including 8 planets. The inner planets closest to the Sun are Mercury, Venus, Earth, and Mars. The outer planets farther from the Sun are Jupiter, Saturn, Uranus, and Neptune. The planets vary significantly in size, composition, and other properties. The Sun is at the center of the system and provides heat and light to enable life on Earth. The planets orbit the Sun in elliptical paths at different distances and rates.

1. ALVARO PITA PIRRI

2. The solar system is a planetary system of
the Milky Way galaxy that is located in one
arm of it, known as the Orion Arm.
It consists of a single star called Sol, which
gives its name to this system, eight planets,
plus the set of planets orbiting dwarf star,
of which the best known are: Pluto,
(136199) Eris, make , Haumea, and Ceres,
as well as interplanetary space between
them. At present, 283 are also other
planetary systems orbiting other stars, 23
of which two are known explanets, 9 are
known three of four known and one of
another five.
According to recent estimates, the solar
system is about 28 thousand light-years
from the center of the Milky Way, our
galaxy [1].

3. The Sun is the star of the planetary
system in which the Earth is,
therefore, is closest to the Earth and
the stars shine more apparent. Their
presence or absence in the sky
determined, respectively, day and
night. The energy radiated by the sun
is used by photosynthetic beings who
constitute the base of the food chain,
making the main source of energy for
life. It also provides the energy that
keeps running climate processes. The
Sun is a star that is in the so-called
main sequence with a spectral type
G2, which was formed about 5000
million years and will remain on the
main sequence approximately 5000
million years. The Sun with the Earth
and all the celestial bodies orbiting
around them, form the Solar System.

4. Mercury is the planet
of the solar system
closest to the Sun and
the smallest (except
for dwarf planets). It is
part of the so-called
inner or rocky planets.
Mercury has no
satellites. Very little
was known about the
surface until he was
sent planetary probe
Mariner 10, and made
observations with
radars and radio
telescopes.

5. Venus is the second planet in the Solar System in
order of distance from the Sun and the third in size
(from smallest to largest). It is named in honor of
Venus, the Roman goddess of love. It is a terrestrial
planet or telluric, often called the sister planet of
Earth, as both are similar in size, mass and
composition. Venus's orbit is an ellipse with an
eccentricity of less than 1%, almost a circle.

6. Earth is the third planet of the Solar System
(including in order of distance from the eight
planets of the Sun) and one fifth of them
according to size. It lies about 150 million
kilometers from the Sun until 2009, is the only
planet on which we are aware of the existence
of life. The Earth was formed at the same time
as the Sun and the rest of the solar system
some 4570 million years. The volume of the
Earth is more than a million times smaller than
the mass of the Sun and the Earth is nine times
that of its satellite, the Moon. The average
temperature of the earth's surface is about 15
° C. At its origin, the Earth may have been only
an aggregate of incandescent rock and gases.

7. Mars, sometimes known as the
Red Planet, is the fourth planet
of the Solar System. It is part of
the so-called telluric planets
(rocky in nature, like the Earth)
and is the farthest planet
interior to the Sun is in many
ways the most Earth-like.

8. Jupiter is the fifth planet of the Solar System. It
is part of the so-called outer planets or gas.
Was named after the Roman god Jupiter (Zeus
in Greek mythology).
It is the planet that offers greater brightness
throughout the year depending on their stage.
It is, moreover, after the largest celestial body
Sol Solar System, with a mass nearly two and a
half times that of the other planets combined
(318 times heavier than Earth and Saturn more
than 3 times).
Jupiter is a gaseous body mass, composed
mainly of hydrogen and helium, lacking an
inner surface defined. Among the atmospheric
details are the Red Spot, an enormous
anticyclone located in tropical latitudes of the
southern hemisphere, the banded structure of
clouds and areas, and the strong momentum
of zonal winds with speeds up to 140 m / s
(504 km / h).

9. Saturn is the sixth planet in the Solar System, is
second in size and mass of Jupiter and is the
only one with a ring system is visible from our
planet. Its name comes from the Roman god
Saturn. It is part of the so-called outer planets
or gaseous Jovian also called for its
resemblance to Jupiter. The most characteristic
are the brightest of Saturn rings. Before the
invention of the telescope, Saturn was the
farthest of the planets known, and at first
glance did not appear bright or interesting. The
first look at the rings was Galileo in 1610 but
the low inclination of the rings and the low
resolution of a telescope made him think at
first that it was large moons. Christiaan
Huygens best means of observation in 1659
was able to clearly see the rings. James Clerk
Maxwell in 1859 showed mathematically that
the rings could not be a single solid object but
should be a grouping of millions of smaller
particles.

10. Uranus is the seventh planet of the Solar
System, the third in size, and the fourth most
massive. The main feature of Uranus is the
inclination of its axis of rotation of almost
ninety degrees with respect to its orbit, the
inclination is not limited to the same
planet, but also to its rings, satellites and the
magnetic field of the same. Uranus has a more
uniform surface of all the planets by their
characteristic blue-green, produced by the
combination of gases in its atmosphere and
has a ring system that are not observable to
the naked eye. It also has a blue ring, which is
a global rarity. Uranus is one of the two planets
have a retrograde motion, similar to that of
Venus.

11. Neptune is the eighth and last
planet in the Solar System. It is
part of the so-called outer planets
or gas giants, and is the first that
was discovered by mathematical
predictions. Its name comes from
the Roman god Neptune, the god
of the sea.