Amazing fact's of science

                              Mysterious of                                                              Earth

   

   

1) Earth is the only planet that is not named after a god (it was name after soil)
 2) The Earth is 4 billion years old
3) The Earth has the greatest density among all the planet in the solar system ( average density is 5.52gm/cc)
4)70 percent of the Earth surface is under water
5)The Earth is the only known planet that supports life
6) mount Everest is the highest point found on Earth (it is 8.8km in height)
7)The distance from the sun to the Earth is calculated As/Au or one astronomical unit ( 1 AUS is equal to 150 million k.M.S)

                   What if the Earth stop rotation
     

      

If the Earth stopped spinning suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. All of the land masses would be scoured clean of anything not attached to bedrock. This means rocks, topsoil, trees, buildings, your pet dog, and so on, would be swept away into the atmosphere.If it stopped spinning completely...not even once every 365 days, you would get 1/2 year daylight and 1/2 year nightime. During daytime for 6 months, the surface temperature would depend on your latitude, being far hotter that it is now at the equator than at the poles where the light rays are more slanted and heating efficiency is lower. 

                                

               Birth of the universe                13.8billion years ago : birth of the universe

                              

  

13.6 billion years ago: formation of milky way

  

4.6 billion years ago: formation of planet 

Earth

 

4.5 billion year ago: formation of moon   

4.45 billion year ago: Earth day is 7 hours long 

4.28 billion year ago:water started condensing in liquid form 

3.9 billion year ago: birth of organic life 

3.5 billion year ago: unicellular life started (prokaryotes)

2.9 billion year ago: pongola galciation occurred

2.5 billion year ago: oxygen is found in the ocean & atmosphere

1.6 billion year ago: Eukaryotic (Nucleated) cells appeared

510 million year ago: vertebrates appeared in the ocean 

420 million year ago: land plants and coral reefs appeared 

400 million year ago: formation of the first forest 

380 million year ago: Earth day is 22 hours long 

375 million year ago: vertebrates with legs appeared 

350 million year ago: transition from water to land 

300 million year ago: first reptiles appeared 

230 million year ago: Age of the dinosaur 

199 million year ago: flying reptiles appeared

65 million year ago: meteor impact, Chicxulub crater, Yucatan, Mexico

65 million year ago: mass extinction of the dinosaurs 

63 million year ago: appearance of placental mammals 

45 million year ago: modern mammals appeared 

1.4 million year ago:hominids use controlled fire 

11,000 year ago: development of agriculture

4,500 year ago: pyramids of giza were built

1543: modern scientific revolution

1760: first industrial revolution

1903: invention of flight

1957: the beginning of space age