INTERESTING FACT ABOUT ZERO
Zero was invented in India by Indian mathematicians dating as early as 5th century. They widely used it in calculations, astronomy and astrology. Zero was spread by Arabians to the Europe and there on it was spread all over. Before this, all Europeans used roman numerical which were difficult to calculate on as they were in the form of Symbols, lengthy and had limits

BLACK HOLE FACT
When the star ten times more massive than our own Sun, explodes (Supernova) it leaves behind the strangest phenomenon in the Universe. The Black Hole. After explosion what is left behind is heavy core of subatomic particles, a Neutron Star. It can be very small, but with enormous density. Scientists calculated that approximately one teaspoon of Neutron Star would weight around billions of tons. The gravitational pressure of this highly dense object is so large that it can bend fabric of time and space. This theory is based on Einstein's proposition that space and time are woven together in a flexible fabric. Massive objects like Sun warp the fabric of space and time and pull smaller objects like Earth. Very large Neutron Star can warp time and space fabric so much that it could create a hole where gravity is so strong that not even light could escape. Black Holes are pulling everything around them closer to the center of the hole. In some sense black holes are creators of the galaxies since they are pulling planets and stars towards the spiral center. Each galaxy has a Black Hole and occasionally galaxies collide together because of the gravitational pull from the larger black holes. It is expected that in 5 billion years Andromeda galaxy will collide with our Milky Way galaxy

AGE OF UNIVERSE
After several debates, astronomers have determined the age of the universe by using a Wilkinson Microwave Anisotropy Probe. By examining the microwave background radiation that WMAP provided, astronomers were able to pin down the age of the universe, accurate to 1%, to 13.7 billion years old.

INTERESTING FACT ABOUT 4 YEAR OLD BABY
In an average day, a four year old child will ask 437 questions.


There are two species of Camel: Camelus(the single humped variety) and Bactrian (the double humped variety).


A camel’s stomach has three sections, similar to a domestic cow (bovine). This makes it a ruminant.


here is a third thin eyelid that the camel can see through. Hair inside the ears helps to keep sand out.


The hump is filled with fat. The hump will shrink if the camel does not eat.


They are called Ships-of-the-Desert because they can carry heavy loads. Camels can carry as much as 1,000 pounds


"Riding camels" can travel up to 100 miles in one day. Camel droppings are burned as fuel.


A camel can drink 27 gallons of water in 10 minutes


Camels are desert animals. Very few animals live in the desert; most of them are small, like beetles and lizards. Small animals can easily find shade and enough water and food, but for big animals it is much harder.


The African dromedary camel lives with people. It helps people to survive in the desert by carrying the people and their things when they move from place to place.


People drink camel milk and use camel dung to make their fires when there is no firewood.
In return desert people, (called nomads) give camels water by digging wells and extra food that they buy from farmers.


Some camels are used by farmers for working in the fields.


The farmer trains the camel to pull a plough and carry heavy loads.


The camel is one of the oldest domesticated animals, people have been using them for more than 10,000 years.



The camel can go for some days with out drinking water. (Not more than 10 days). The camel conserves water in his body cell and his stomach. Conserving means he doesn't waste water through sweating, breathing or urinating.


He is able to live on very poor vegetation during the dry summer months.


The fat stored in the hump will provide him with enough energy to reach good grazing.


He has very long legs to keep his big body high off the hot ground.


Even when he sits down his belly will not touch the ground, he has a pillow like callus under his chest to balance him and make it comfortable for him to rest on the sand, even when it is hot.


On his knees he has very hard skin to protect him when he rests on them.


The young are born in the rainy season when there is plenty of grazing.


A female camel is pregnant for about 13 months and she will only have offspring every 2-3 years.


The camels eyes are protected by long eyelashes and have an extra thin eyelid. In a desert storm he can still keep walking and find his way.
The ears are small and very hairy, to keep flying sand from entering.
The nostrils can close completely or leave just a tiny opening for breathing.



His coat is thick to insulate against both heat and cold. The desert is very hot during the day (32C.-45C.), but gets very cold at night. (Almost freezing!).
There are two species of camels: The Dromedary, characterized by one hump and long legs, lives in the deserts of Arabia and Africa. The Bactrian camel has 2 humps and is shorter with a very thick coat. The Bactrian lives in northern Asia, China and Afghanistan, in areas called "steppe" that are mostly grasslands.

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