(Encyclopedia) astronaut, crew member on a U.S. manned spaceflight mission; the Soviet term is cosmonaut. Candidates for manned spaceflight are carefully screened to meet the highest physical and…
Teen readers across the country vote for the best from the American Library Association Thwonk by Joan Bauer Related Links Teen Read Week from the ALA…
Neither Fish nor Tetrapod Several times a year popular science articles breathlessly announce the discovery of a “missing link,” but in the case of the recently identified fossils of an odd…
They're Complementary After AllTheories of the UniverseChunks of UncertaintyJust a Little Math Won't HurtBorn of ProbabilityThey're Complementary After All Heisenberg's uncertainty principle led…
Jacobus Van CortlandtStephen Van CortlandtCornelius VanderbiltWilliam Henry VanderbiltSir William Cornelius Van HorneKiliaen Van RensselaerMartha Van RensselaerMatthew VassarThorstein VeblenFrancis…
Earth's Moon is a small ball of gray rock revolving 239,000 miles around Earth. It is just one of many in the solar system. The Moon has no air and no water. It is about one-fourth as large as…
AFC Central Pittsburgh QB Kordell Stewart will be scrambling to get his Steelers deeper into the playoffs this year. As they have for the past two seasons, the Pittsburgh Steelers and…
