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March/April 2008

Convergent EvolutionConvergent Evolution
Sharks and whales may look alike, but one is a fish and the other a mammal. The appearances of some types of galaxies, too, can be deceiving.

MESSENGER Meets MercuryMESSENGER Meets Mercury
Enjoy the first close-up photos anyone has seen of the first rock from the Sun in more than three decades.

In Future Issues
In our next issue, astronomer John Kormendy discusses how galaxies evolve over time to form massive bulges of stars at their centers, and reveals that bulges that look similar can form in different ways. Freelance writer Robert Wearner tells us about the 17th Century introduction of Western ideas into traditional Chinese astronomy in “The Emperor and the Pole Star.”

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