Third Rock from The Sun -- the Earth If Earth was the size of an apple, an apple would be the size of an atom DNA in single cell will stretch from fingertip to fingertip. All the DNA in your body would stretch to the Sun and back There are more chickens than people in the world Half of all living mass is bacteria Top of New York's Verezano Narrows bridge towers are farther apart than their base due to curvature of the earth The temperature at the core of the earth is 7500K, hotter than the surface of the sun Tectonic movement is about the same speed that your fingernails grow. Next time you cut your nails think about San Diego speeding toward Seattle A baseball held at arms length has more tidal effect on you than Mars at its closest. The tidal action of the Moon far surpasses that of all the planets combined. In other words, don't worry about those silly planetary conjunctions At some point in the future earth's rotation will slow down and one side of the earth will always face the moon (the other side will never see it). 300 tons of extraterrestial rock and dust fall on earth each day. Most of dirt on your roof is micrometeorites. Jupiter contains more than twice as much matter as all of the other planets in our solar system combined. The earth is less than 1/100the mass of our solar systrem. Sun is 98%.