Solar system
There are lots of mystery all over our universe.Stars,Galaxy,Planets,satellites,meteorites, & many other mysterious objects.The observable universe is about 46 billion light years in radius.The Universe is commonly defined as the totality of existence millions of Galaxy with there billions of stars & planets and all matter and energy Similar terms include the
cosmos, the
world and
nature.And this article is about the Sun and its planetary system.We have to start from the galaxy called Milky way.The Solar System comprises the Sun and its planetary system of ten planets, as well as a number of dwarf planets, satellites (moons), and other objects that orbit the Sun. It formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud.In addition to planets, the Solar System also consists of comets, asteroids, minor planets, and dust and gas.
Everything in the Solar System
orbits or revolves around the Sun. The Sun contains around 98% of all
the material in the Solar System. The larger an object is, the more
gravity it has. Because the Sun is so large, its powerful gravity
attracts all the other objects in the Solar System towards it. At the
same time, these objects, which are moving very rapidly, try to fly away
from the Sun, outward into the emptiness of outer space. The result of
the planets trying to fly away, at the same time that the Sun is trying
to pull them inward is that they become trapped half-way in between.
Balanced between flying towards the Sun, and escaping into space, they
spend eternity orbiting around their parent star.Our journey will begin with our only star SUN.
Sun
The Sun is the star at the center of the Solar System.It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields. It has a diameter of about 1,392,684 km (865,374 mi), around 109 times that of Earth, and its mass (1.989
×10
30 kilograms, approximately 330,000 times the mass of Earth) accounts for about 99.86% of the total mass of the Solar System. Chemically, about three quarters of the Sun's mass consists of hydrogen, while the rest is mostly helium. The remainder (1.69%, which nonetheless equals 5,600 times the mass of Earth) consists of heavier elements, including oxygen, carbon, neon and iron, among others.Its our only system for light & life.Our magnetic source depends on our sun.It creates the most powerful energy all above the solar system.We can also call it a giant fire ball.Since the sun is not a solid body, different parts of the sun rotate at
different rates. At the equator, the sun spins once about every 25 days,
but at its poles the sun rotates once on its axis every 36 Earth days.The solar atmosphere (a thin layer of gases) is where we see features such as sunspots and solar flares on the sun.There almost ten planets orbiting around the sun.Such as Mercury,Venus,Earth,Mars,Jupiter,Saturn,Uranus,Neptune,Pluto & Sedna.
Mercury
Mercury,the 1st planet of our solar system.Mercury is the smallest and closest to the Sun of the ten planets in the Solar System.Its about
57,910,000 km far from the sun & 48 million miles (77 million km) from Earth.It orbit our sun once in 88 days.Seen from the Earth, it appears to move around its orbit in about 116 days, which is much faster than any other planet.The Mercury has no atmosphere of its own.Mercury's surface experiences the greatest temperature variation of all the planets, ranging from
100 K (−173 °C; −280 °F) at night to
700 K (427 °C; 800 °F) during the day at some equatorial regions.
Venus
Venus,the morning star,& the evening star.Its say hello from the east,& say goodbye from the west.We call it the goddess of love.Pure,calm & beautiful.It is named after the Roman goddess of love and beauty.Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.It has no satellite.After the Moon, it is the brightest natural object in the night sky.When we look in the sky & see this gorgeous planet,we may be confused how its look like from the inside.May looks like paradise,or may be it is the paradise.But in reality,its a living hell. It has the densest atmosphere of the four terrestrial planets, consisting of more than 96% carbon dioxide. The atmospheric pressure at the planet's surface is 92 times that of Earth's. With a mean surface temperature of
735 K (462 °C; 863 °F), Venus is by far the hottest planet in the Solar System.
Surface of Venus
Venus' thick and toxic atmosphere is made up mostly of carbon dioxide (CO
2) and nitrogen (N
2), with clouds of sulfuric acid (H
2SO
4) droplets.Every time lava come out from the inside like a liquid human blood.Seeing all this devastating natural behavior,can we really feel it like a haven?
Earth
Earth,our home planet.The first or maybe the only living source in the whole solar system.Earth is the third
planet from the
Sun, it is the
densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four
terrestrial planets. It is sometimes referred to as the
world or
the Blue Planet.Earth formed approximately 4.54 billion years ago, and life appeared on its surface within its first billion years.It has the most powerful magnetic field from the other planets in solar system.Earth's
biosphere then significantly altered
the atmospheric and other
basic physical conditions, which enabled the proliferation of
organisms as well as the formation of the
ozone layer, which together with
Earth's magnetic field blocked harmful
solar radiation, and permitted formerly ocean-confined life to move safely to land. About 71% of the surface is covered by salt water oceans, with the
remainder consisting of continents and islands which together have many
lakes and other sources of water that contribute to the
hydrosphere.Oceans at least 2.5 miles (4 kilometers) deep cover nearly 70 percent of
Earth's surface. Fresh water exists in the liquid phase only within a
narrow temperature span (32 to 212 degrees Fahrenheit/ 0 to 100 degrees
Celsius). This temperature span is especially narrow when contrasted
with the full range of temperatures found within the solar system. Earth's diameter is just a few hundred kilometers larger than that of
Venus. The four seasons are a result of Earth's axis of rotation being
tilted more than 23 degrees.The earth has its one only satellite Moon
Mars
Mars,the red planet.Mars is the fourth planet from the sun at a distance of about 228 million km (142 million miles). Mars makes a complete orbit around the sun in 687 Earth days.. It is the second smallest planet in the Solar System.Its called the "Red Planet" because the iron oxide prevalent on its surface gives it a reddish appearance.Mars has a very thin atmosphere, having surface features reminiscent both of the
impact craters of the
Moon and the volcanoes, valleys, deserts, and
polar ice caps of Earth.Mars has two known moons, Phobos and Deimos . The next NASA mission to the Red Planet, is gearing up for launch on
18 Nov 2013
at Kennedy Space Center in Florida. The orbiter will study the upper
Martian atmosphere to find out how Mars lost its atmosphere over time., which are small and irregularly shaped.
