 |  | Astronomy February 2005
SPECIAL SECTION
Einstein’s century
Relativity turns 100
One hundred years ago, while working in the Swiss patent office, Albert Einstein invented a theory that touched off a revolution in physics. How did he do it? RICHARD PANEK
The man who remade the universe
Einstein’s theories made him the world’s most famous scientist, but he also made his mark in politics. ROBERT BURNHAM
Relativity’s infinite beauty
In the 20th century, general relativity became the preeminent theory for decoding the cosmos. In the coming century, relativity will blaze new trails even as other theories try to supercede it. JAMES TREFIL
PLANETARY SCIENCE
Cassini/Huygens at Titan
When the Cassini spacecraft swooped past Titan in October, it got a super view of this enigmatic Saturn moon. RICHARD TALCOTT
DEEP-SKY OBSERVING
See a star die
Planetary nebulae — remnants of dead stars — are some of the most beautiful celestial objects. Learn why these cosmic cadavers shine the way they do and which are the most dazzling to observe. DOUG SNYDER
MOON OBSERVER’S NOTEBOOK
Explore a lunar debris field
Impacts transformed the region of lunar crater Janssen and the Vallis Rheita. The formation of huge, nearby basins pocked this area, making it look like a galactic battlefield. ROBERT BURNHAM
PROFILE
Meet Mr. Eclipse
Globetrotting NASA astrophysicist Fred Espenak tells people when and where to go to view solar and lunar eclipses. BOB BERMAN
TELESCOPE REVIEW
Backpack this scope
Costing less than $100, Celestron’s ExploraScope, the latest offering for young skygazers, is a bargain. PHIL HARRINGTON
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