The cheetah on racetrack: It can beat Ussain Bolt but not David Rudisha

On august 3, 212 a female cheetah set a new record of covering 100 meters in just 5.95 seconds, far better than Ussain Bolt- the fastest man on earth. The reason cheetah can run so fast are -
1. They have long legs.
2. The have highly flexible muscle connected to legs.
3. They have springy backbone which give them boost in speed.

The record of 800 meter race was set by a Kenyan runner David Rudisha of 1 min 41.01 seconds. The cheetah's normal body temperature is 102 degree Fahrenheit. It is Observed that once the cheetah gets momentum beyond the speed of 16 kms per hour, its body cannot release excess heat. The grueling task performed by the cheetah leads to the storage of 90 % of heat produced, within its body thus increasing its body temperature to great extent. So it takes rest for 15-20 minutes to get its body temperature to normal. so David Rudisha can easily overcome cheetah. :)

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Star Eats A Whole Planet- Its cause!!

                                                       Star "Eats" A Whole Planet 
Scientists have found evidence of a plant's Destruction. The team thinks that its star gradually expanded and ate it up. It is bound to happen to all stars. All stars have hydrogen for their fuel. Take and example of our star. Our sun converts 5 million tonnes of hydrogen to 3.7 million tonnes of helium ( remaining 1.3 million tonne into Light and energy) every second. It has been doing this for 5 billion years and continue doing it until 5 billion years more. But Once its hydrogen fuel is exhausted, it will burn helium. Helium evolves more heat during combustion. So heat will try to escape from Sun's gravity. To stop this Sun will expand. Which will reduce its temperature considerably. But the distance between Earth and Sun will be reduced so earth's temperature will rise to 10,000 degree Celsius. It will lead to utter destruction of earth. 

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