The Sun – Planets In Our Solar System

The Sun - Planets In Our Solar SystemSun and its hidden facts

The Sun is considered the main star which gives vital energy to our planet Earth and to the Solar System. It is comprised of Hydrogen of 70% and Helium of 28% and remaining 2% is metal. The rotation of sun differs in the equator region and in the polar region like for example- at equator surface, it takes 25.4 days to rotate while it takes 36 days near the polar surface.  This difference takes place because unlike Earth, it is a gas body and that’s why to it rotate in such manner. The temperature comprises of 15.6 million in Kelvin. Compare to water, core centre of its density is 150 times more.

Sun and its Power

Sun and its power are of 386 billion Mega Watt and it is produced with the help of reaction of nuclear fusion. In every second, Hydrogen of 700,000,000 tonnes converted into Helium of 695,000,000 tonnes. The energy of 5,000,000 tonnes is converted into gamma rays. The energy gets absorbed because of its outward movement across the surface area and discharge temperature at a low rate and till it reaches the surface it becomes a visible light. 20% path of the surface is moved not with radiation but with convection.

Story behind Solar Eclipse

The Sun - Solar EclipsePhotosphere is the surface of Sun and it has a temperature of 5800 K.  The Sunspots are large and has a diameter of 50,000 km and they are a very cool region as to be considered. These Sunspots are formed due to the magnetic field interaction of the magnificently bright star.

Above Photosphere lies chromosphere and Corona lies above chromosphere and it is highly spread in space, but during solar eclipse (total) Corona is visible. 1,000,000 K is the total temperature of Corona. From Earth, Moon and Sun it appears to be the same size. Moon generally rotate around Earth and Earth rotate around Sun and both orbits are in the same plane. Sometimes, Moon comes in between Earth and Sun and cause Total Solar Eclipse and when Moon rotates slightly imperfect then it is Partial Solar Eclipse. During the daytime, it becomes almost dark at the time solar eclipse and it is amazing because you can see stars in the sky and birds and animals think it is night time. It is simply incredible.

Sun as Energy Booster

Sun also leaves solar wind of low density of about 450 km in per second. This solar wind offers the highest form of energy and it has a strong effect on our Planet Earth. Solar wind composition is different in the different polar region.

  • Diameter: 1,390,000 km
  • Mass: 1.989e30 kg

This star is a source of energy and gives us light so to survive on this beautiful planet. It has both visible light and ultraviolet light and both has a strong impact in our life. Visible light of this star has vitamin D which is good for human health while ultraviolet rays cause skin cancer and other serious diseases. The age of Sun is 4.5 billion and it used only ½ quantity hydrogen, but one day the hydrogen fuel of Sun will end and this will cause Earth’s destruction.

The Planet Mercury – Planets In Our Solar System

Planet Mercury

The Planet Mercury - Planets In Our Solar SystemThe Planet Mercury is the closest planet to the Sun. With virtually no atmosphere, the planet has some really harsh conditions with temperatures rising to 840 degrees Fahrenheit during daytime and fall to hundreds of degrees on the negative scale during night. Mercury has almost no atmosphere that can absorb meteor impacts and hence, its surface is strewn with craters.

  • Orbit: 88 Earth Days
  • Diameter:3,031 miles (4,878 km)
  • Day:6 Earth days

The present name given to the planet Mercury is that of the Roman messenger god. This is due to the fact that it circles the sun faster than the other planets. The planet has been named differently by different civilisations. The Sumerians knew about this planet around 5,000 years ago and they associated it with their god writing, Nabu. Mercury is known as a morning star as well as an evening star. However, Greek astronomers knew that both names referred to the same astronomical body.

Smallest Planet

Mercury is the smallest of all planets. Physically, it is only slightly bigger than Earth’s moon. Due to the absence of a significant atmosphere, the planet faces some of the worst temperatures in the solar system and also is hit by asteroids and meteors. Around 4 billion years ago, Mercury was struck by an asteroid that was roughly 60 miles. The impact was equal to the explosion of a trillion one megaton bombs. The resulting crater is today known as Caloris Basin. It is believed that a similar impact may have resulted in the odd spin that the planet follows presently.

Despite being the closest to the sun, water ice has been discovered in craters around its north pole. Certain regions may be permanently shaded from the sun’s heat aiding in the formation of water ice. The southern orbit has also contained ice, but this has not been validated by scientists yet.

The planet Mercury is the second most dense planet after Earth. It is a core of around 2,200 to 2,400 miles in width. The outer shell of the planet is only 300 – 400 miles thick. This fact is a mystery for scientists till date.

It was recently discovered that the planet Mercury possessed a magnetic field. Due to its slow rotation speed (59 Earth days), the planet was not expected to possess one. The presence of such a magnetic field suggests that its core may still be molten, although solar winds may dampen some of the magnetic field emanating from the planet.