Biggest Ocean Covering 32.6% of the Earth's surface or 64,186,300 miles, the Pacific Ocean is officially the world's biggest ocean.
Deepest Lake, is Lake Baikal in Siberia, Russia. The Olkhon Crevice, the deepest point of the lake, has a depth of 5,370 ft, of which 3,875 are below sea level.
Biggest Lake, is the Caspian Sea, an inland sea which covers parts of Azerbaijan, Russia, Kazakhstan, Turkmenistan, and Iran. It is 760 miles long, with a surface area of 143,560 miles and an estimated volume of 21,500 cubic miles. LEARN MORE
Smallest Ocean, more than ten times smaller than the Pacific Ocean, the Arctic Ocean, which has a surface area of 5,105,700 miles, is the world's smallest ocean. LEARN MORE
Biggest Lake Shrinkage Due almost entirely to the extraction of water for irrigation purposes, the Aral Sea has shrunk the most in recent times having lost almost two-thirds of its original size. By 1994 (with 10,500 miles left compared to 26,300 miles in 1950), it had divided into two smaller bodies of water.
Surface Area of the Earth: 196,935,000 Sq. Miles Land Area on the Earth: 29.1% Total Water Area: 70.9% Type of Water: (97% salt), (3% fresh) Circumference at the equator: 24,901.5 miles The earth orbits the Sun at: 66,700 mph per hour.
Einstein's crucial breakthrough about the nature of light, made in 1905, can be summed up in a deceptively simple statement: "The speed of light is constant."
So... what does this sentence really mean???
Surprisingly, the answer has nothing to do with the actual speed of light, which is 186,000 miles per second through the "vacuum" of empty space. Instead, Einstein had an unexpected —and paradoxical— insight: that light from a moving source has the same velocity as light from a stationary source. For example, beams of light from a lighthouse, from a speeding car's headlights, and from the lights on a supersonic jet all travel at a constant rate as measured by all observers— despite differences in how fast the sources of these beams move.
The Special Theory of Relativity is based on Einstein's recognition that the speed of light does not change even when the source of the light moves. Although it might seem logical to add the speed of the light source and the speed of the light beam to determine the total speed, light does not work this way. No matter how fast Einstein rides his bike, the light coming from his headlight always moves at the same speed.