12/1997, Time and Space

On the Trail of Rogue Planets A few scientists believe that most galaxies harbor a thousand trillion planets unattached to any star. Peter Catalano. Vulcan Chasers Why does Mercury travel a different path than Newton's laws predict? For several decades, many astronomers believed an inner planet was at fault. William Sheehan and Richard Baum. Digging for Gold A near-Earth asteroid just one kilometer across could prove to be a gold mine for precious metals. Jeffrey S. Kargel. COV ER Astronomy's Feisty Old Man Despite half a century as the greatest living observational cosmologist, Allan Sandage remains an outcast for his views on the size and age of the universe. Frederic Golden. The Triumph of Hipparcos How can the most ancient stars appear older than the universe itself? Recent results from the European Hipparcos satellite may finally solve this mystery. Amy Adams. Raising Astronomers It's not hard to get kids hooked on astronomy. All it takes is some innovative classroom programs - or a crystal-clear night under the stars. Steve Olson. Touring a Stellar Graveyard A colorful group of compact planetary nebulae awaits backyard observers who crank up the power. Alan Goldstein. Getting the Right Start Looking for a good, low-cost scope? This 4.25-inch reflector you build from a kit could do the trick. Glenn F. Chaple, Jr. Ask Astro The editors of Astronomy answer your questions about the sky and the universe. gepflegtes Exemplar, nur kleine Lesespuren

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