DICTIONARY LOOKUP
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Jewel of Our Solar System
Adorned with thousands of beautiful ringlets, Saturn is unique among the planets. All four gas giant planets have rings -- made of chunks of ice and rock -- but none are as spectacular or as complicated as Saturn's. Like the other gas giants, Saturn is mostly a massive ball of hydrogen and helium.

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Kelvin (K)

0 Kelvin is absolute zero; Water Ice melts at 273 K (= 00C = 320F); Water boils at 373 K (= 1000C = 2120F).

Kepler, Johannes (1571-1630)

German astronomer and mathematician. Considered a founder of modern astronomy, he formulated the famous three laws of planetary motion.

kilogram (kg)

= 1000 grams = 2.2 pounds, the mass of a liter of water.

kilometer (km)

= 1000 meters = 0.62 miles.

kinetic energy

The energy of motion; equivalent to one-half an objects mass multiplied by its velocity squared.

 
Can't find it? Don't understand it? Ask us.
Q
Kelvin (K)

0 Kelvin is absolute zero; Water Ice melts at 273 K (= 00C = 320F); Water boils at 373 K (= 1000C = 2120F).

Kepler, Johannes (1571-1630)

German astronomer and mathematician. Considered a founder of modern astronomy, he formulated the famous three laws of planetary motion.

kilogram (kg)

= 1000 grams = 2.2 pounds, the mass of a liter of water.

kilometer (km)

= 1000 meters = 0.62 miles.

kinetic energy

The energy of motion; equivalent to one-half an objects mass multiplied by its velocity squared.