![]() ![]() Make sure that the number in scientific notation is put into your That is significant, the rest are only place-holders. This can help you figure out when the zeroes are important, and when they are The number of digits reported indicates the number of significant figures. (None of these appear above, because they would be really SMALL numbers.but you get the idea!) A negative exponent shows that the decimal point is shifted that number of places to the left. A positive exponent shows that the decimal point is shifted that number of places to the right. Three hundred eighty four thousand, four hundred: the distance to the moon from Earth (in km)įorty thousand: the distance around the Earth at the equator (in km).įour thousand: The circumference of Pluto (in km).Īs you can see, the exponent of 10 is the number of places the decimal point must be shifted to give the number in long form. One hundred million: the radius of the Sun in meters.ħ8.3 million: the minimum distance from the Earth to Mars. One Billion: The number of Earth-sized planets that would fit into the Sun Also the speed of light in km/hr Six Billion: Approximate number of people on the planet, circa 2000. Two Hundred Billion: Approximate number of stars in the Milky Way Galaxy.ġ5 Billion: Approximate age of the Universe (in years). One hundred trillion billion: The approximate number of stars in the UniverseĤ0.1 Trillion: the distance (in km) to the nearest star, Proxima Centauri.ĥ.7 Trillion: the number of dollars in the U.S. Here are some examples of scientific notation used in astronomy (and a few just There are two parts to this number: 1.5 (digits term) and 10 12 Numbers, such as the size or age of the Universe, or the size of the nationalĭebt. Scientific notation is the way that scientists handle very large or very small * Not really-we've actually been begging you to do this since day 1.Scientific Methods Scientific Methods: Scientific Notation Now our number is translated to 166.666 × 10 ³, so that would be 166.666 kilo-somethings! Awesome.
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