Every day as the sun rays hit our face we get up to a brand new day. This fiery spherical ball which we call sun is the main reason due to which human being can sustain their life on earth. There are many interesting facts about the life giver sun which usually people don’t know. Let’s know some of the interesting facts about Sun.
Our sun is an oldie. It’s about 4.6 billion years old.
When our sun will be 7 billion years old then it will become bigger and will start to cool down slowly.
2. Inside the Sun
From the earth, sun looks like a burning ball of fire. Actually there are lots of activities going on inside the sun. Every second 5 million tons of energy and 695 million tons of helium are released from 700 million tons of hydrogen! Now you know why sun is so hot.
Source: goldenkstar.com, image: wikimedia.org
3. The burning ball of gas
4. Sun’s Rotation
Just like the earth, Sun too rotates on its own axis. But the interesting fact is that the sun’s equator spins much faster than sun’s pole! One rotation of sun at its equator takes 27 days and at its pole takes 31 days.
This is possible because sun is made up of gases. If its crust would have been solid like our earth then this phenomenon would have been impossible.
5. Earth in Sun!
Sun is not limited in the reddish orange ball that we can see in the sky. Rather the outer atmosphere of sun extends to about 100 A.U. i.e. nearly 10 billion miles. So, our Earth exists within the outer atmosphere of the sun. In this sense we are actually living inside the sun!
Source: earthysky.org, image: wikimedia.org
6. Sun’s Gravity
7. Ringing inside the Sun
The gases inside the sun moves continuously which is known as convection motion. This motion creates lots of noise and these sound waves bounce continuously inside sun. We cannot hear the noise as these frequencies are too low. If we could hear it then it would seem that there are lots of big and small bells ringing together inside the sun!In the sun a sound wave can travel from one side to other in 2 hours.
Source: suntrek.org, image: wikimedia.org
8. Overweight on sun!
A person weighing 50 kg on earth will weigh 1353.6 kg on the sun. Imagine what will be the weight of body builders on sun.
Why this happens? Simply because of the massive size of sun compared to the earth. If sun is the size of a beach ball then earth’s size will be as small as a pea.
9. If Sun vanishes
Do you know that if our sun vanishes we would not know it for 8 minutes? The reason behind it is that it takes 8 minutes for sunlight to travel from sun to earth.
10. Our Sun – The dwarf
Calling our sun dwarf is quite hard to imagine. Well, the official definition of our sun is “Yellow G2 Dwarf” because our sun is just an average, middle aged star among the billions of star present in the universe. Sun is a yellow dwarf star!
Don’t worry sun; to the universe you maybe dwarf but for us human you are the most important star.
Source: bobthealien.co.uk, image: wikimedia.org
11. Explosion on Sun
Violent explosions occur in the atmosphere of Sun when magnetic fields of sun come together. These explosions are known as solar flares and they can reach about 100,000 miles away from the sun. And the big news is that the energy released during solar flares is equivalent to the energy released when millions of 110 megaton hydrogen bombs explode at the same time. Thank God! There are no solar flares on earth.
Source: goldenkstar.com, image: wikimedia.org
12. Flip in Sun’s magnetic field
Do you know that after every 11 years Sun’s magnetic field flips? Flipping of magnetic field means that sun’s South Pole becomes North Pole and North Pole becomes South Pole. These flips are accompanied with explosions on the surface of sun due to which sometime electrified particles may reach Earth. These explosions can also create disturbances impacting the power grids, GPS units and flight communication.
13. Sun too gets dark spots
It’s true. Dark spots appear on sun’s surface due to low temperature and intense magnetic strength near that region. These dark regions are called Sunspots.
You can count sunspots using a method called Wolf number which was developed by Johann Rudolf Wolf.
The next time you fret over dark circles or blemishes; just remember even sun isn’t immune from the dark spots.
Source: planetfacts.org, image: flickr
14. Sunspots and Stock Market
Whether it’s a myth or reality no one knows, but some market analyst believe that sunspot and stock market are correlated. Some analysts believe that when sunspot activity increases, people start buying more which causes rise in market. The vice versa occurs when sunspot activity decreases.
15. Winds on Sun
Winds blow on sun too. But unlike the earth’s wind, sun’s wind consists of electrons, protons and other low density particles. These winds are known as solar wind and they have a speed of 450 km/hr.
These wind particles do not affect human beings as our earth is protected by the atmosphere.
Source: istp.gsfc.nasa.gov, image: dailygalaxy.com
16. Life Expectancy of Sun
Sun had been burning for about 4 and a half billion years and had already burnt half of hydrogen in its core. So, sun will burn only for 5 billion years more. After then the sun will start swelling, engulfing even our dear earth and then die off as a small white dwarf.
17. Blue Sun
Our dark orange – reddish sun can appear blue if when it is viewed at 475 nanometer wavelength!