Sky & Telescope March 2008

FEATURED ARTICLES

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Where Did You Come From?
You can thank your lucky stars for the calcium in your bones and the iron in your blood. But what about the iodine in your thyroid?
By C. Renée James

Gaia's Mission to the Milky Way
In the next decade, a unique spacecraft will start pinning down the positions and distances of more than a billion stars.
By Thorsten Dambeck

Joining the Borg
Two new refractors from Borg make resistance futile for astrophotographers wanting optics with wide, flat fields.
By Alan Dyer

BEYOND THE PRINTED PAGE

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The Wacky Elements in Us
Why do you need chromium, or manganese, or potassium to stay healthy? Find out at www.one-a-day.com/definitions.
By

Discovering the Moon
For a fun catalog of the Moon's most interesting features, be sure to check out Charles Wood's Lunar 100.
By

Your Sky Shots
Where should you go to see the best amateur astronomy on the Web? Look no further than our online photo gallery!
By

ALSO IN THIS ISSUE

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Polestars of the Future
Thousands of years from now, will celestial navigators have good stars to steer by?
By André G. Bordeleau

Exploring the Moon
Imbrium's Impact
By Charles A. Wood

Suburban Star-Hop
A Chariot Full of Clusters
By Ken Hewitt-White

Table of Contents
See what else March's issue has to offer.