Searching for signs of life on the Red Planet
by Holly Poulos Related Links All About Mars Planet Mars Video Planet Mars Quiz Planet Mars: Compare and Contrast…
FIND OUT MOREMercury is the planet closest to the Sun, and experiences scorching temperatures by day. But it has virtually no atmosphere to trap the heat, so is freezing at night. It is a…
A day is measured by how long it takes the earth to rotate (turn) once: 24 hours.The earth is divided into 24 time zones. It takes the sun an hour to cross each zone.The time zones are marked by…
Apollo 11July 20 marks the anniversary of man's first walk on the moon by Ricco Villanueva Siasoco How many movies, songs, anecdotes—even clichés—have sprung from humanity's first landing on the…
(Encyclopedia) latitude, angular distance of any point on the surface of the earth north or south of the equator. The equator is latitude 0°, and the North Pole and South Pole are latitudes 90°N and…
Who's Who in the Lord of the Rings From Aragorn to Ring Wraiths by Laura Hayes The Lord of the Rings is epic in scope and features a host of characters. Here are the most…
(Encyclopedia) scandiumscandiumskănˈdēəm [key], metallic chemical element; symbol Sc; at. no. 21; at. wt. 44.95591; m.p. 1,541℃; b.p. 2,831℃; sp. gr. 2.99 at 20℃; valence +3. Scandium is a soft…
(Encyclopedia) stratigraphy, branch of geology specifically concerned with the arrangement of layered rocks (see stratification). Stratigraphy is based on the law of superposition, which states that…
