History Of The Earth

• Biological time line of the Earth 
• Astronomical and geological evidence indicates that the earth was formed about 4.54 billion years ago . About 14 billion years ago ,there was a massive explosion called ''The Big Bang'', which released radiation ,particles and clouds of atoms . This Bag Bang is believed to have given birth to the Universe . Gravity condensed the atoms into galaxies where  stars appeared These Stars then began creating new types of atoms as they aged and exploded as supernovae . The Sun was formed around 4.5 billion years ago followed by the Earth around the same time.
•            Did you Know ?
•  There is a lot of water in the Earth's atmosphere . In fact, there is enough water to cover the entire surface of the Earth with one inch of water ! Our planet is located  in the perfect place for our  need for water . If it was any closer or farther away from the Sun , all that water would either boil away or freeze .
•          The Earth orbits the Sun at about 67,000 miles per hour, or 100,000 kilometers per hour , which is approximately a thousand times faster than a car driven on a highway .