(Encyclopedia) cobalt, metallic chemical element; symbol Co; at. no. 27; at. wt. 58.9332; m.p. 1,495℃; b.p. about 2,870℃; sp. gr. 8.9 at 20℃; valence +2 or +3. Cobalt is a silver-white, lustrous,…
(Encyclopedia) rainbow, arc showing the colors of the spectrum, violet inside and red outside, which appears when the sun shines through water droplets. It often appears while the sun is shining…
(Encyclopedia) science fiction, literary genre in which a background of science or pseudoscience is an integral part of the story. Although science fiction is a form of fantastic literature, many of…
(Encyclopedia) shark, member of a group of almost exclusively marine and predaceous fishes. There are about 250 species of sharks, ranging from the 2-ft (60-cm) pygmy shark to 50-ft (15-m) giants.…
Record of the Year“What's Love Got to Do With It,” Tina TurnerAlbum of the YearCan't Slow Down, Lionel Richie (Motown)Song of the Year“What's Love Got to Do With It,” Graham Lyle and Terry Britten…
By John Gettings, Mike Morrison, and Gerry Brown A TRAGIC FINAL LAP NASCAR's Winston Cup series didn't just lose a seven-time champion when Dale Earnhardt, 49, died in a last-lap crash at…
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Physics is the…
WHAT IS THE UNIVERSE MADE OF? HOW BIG IS THE UNIVERSE? BIG BANGDARK MATTERFIND OUT MOREThe Universe is everything that exists—space and all the stars, planets, and other matter it contains.…
