When did the Earth comes from
(-) negative number as BC
(+) positive number as AD
About -4600000000
The Earth was formed from gas and dust. It's very hot that it becomes a ball of liquid rock.
About -3800000000
The hot Earth covered with thick clouds of steam and gas, it began to rain during the cool weather. It rained for hundreds of years and turn into a sea.
About -500000000
More land appeared out of the seas, living things spread on to the wet land.
About -280000000
Monster reptiles are called dinosaurs. They are 30 times bigger than elephant. But dinosaurs died out at year -65000000.
About -190000000
The first mammals appeared on Earth. They feed their babies on milk.
About -1500000
The early people were probably ape-like creatures. We also lived in caves.
5000000000 years later
We have to say "goodbye" to the Earth becuase the Sun may have grown up to 100 times its size and could burn up our planet.
Earth facts
The Earth measures about 40000 km around the Equator. This takes 55 km/h a month.
The Earth weighs about 6000000000000000000000000 kg.
The highest temperature in the world is Sahara Desert, 57.7°C
The lowest temperature in the world is Antarctica, -88.3°C
The tallest man in the world is Robert Wadlow, from USA, which is 272cm, 107.01 INCH.