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Featured on the Cover: March 1999
Resembling an aerial fireworks display, this dramatic NASA Hubble Space
Telescope picture of the energetic star WR124 (a Wolf-Rayet star) shows
hot clumps of gas being ejected into space at speeds of over 100,000
miles per hour. While most elements are formed in stars, this century
scientists have been able to synthesize "artificial" elements in the
laboratory. Darleane C. Hoffman and Diana M. Lee discuss "Chemistry of
the Heaviest Elements--One Atom at a Time" in this month's Viewpoints
article on
pages 331-347. Additional articles on the origins and properties
of elements are here.
Photo by NASA,
used with permission. The cover was designed by Betsy True.
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