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TIME: Almanac 1995
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<text id=89TT0478>
<title>
Feb. 20, 1989: Cosmic Birth
</title>
<history>
TIME--The Weekly Newsmagazine--1989
Feb. 20, 1989 Betrayal:Marine Spy Scandal
</history>
<article>
<source>Time Magazine</source>
<hdr>
SCIENCE, Page 81
Cosmic Birth
</hdr><body>
<p>First look at a young pulsar
</p>
<p> Scientists have been able only to theorize about the origin
of pulsars, those superdense, fast-spinning celestial objects
that appear to blink on and off as often as every millisecond.
Now the mystery seems to be solved. Last week an international
team of astronomers announced that they had detected a pulsar
emerging from the murky dust clouds left over from Supernova
1987A, a giant star that exploded about 170,000 light-years
from earth and was first seen two years ago.
</p>
<p> Astronomers have long believed that pulsars are produced by
stellar explosions. Until now, though, no pulsar had been
observed so soon after its birth. The first pulsar was
discovered in 1967, its radio signals so regular that they were
suspected of coming from an alien civilization. Several hundred
pulsars have since been found.
</p>
<p> Because the new pulsar is so young, it is spinning almost
unimaginably fast. Its "day" is only one two-thousandth of a
second long, and while the earth's equator rotates at about
1,000 m.p.h., the pulsar's is moving at more than 200 million
m.p.h. By rights, the pulsar should fly apart, but it is so
dense -- a teaspoon of it would weigh 300,000 tons on earth --
that its gravity holds it together. Says Richard Muller of
Lawrence Berkeley Laboratory, a member of the discovery team:
"We can't help being astounded by what we are seeing."
</p>
<p> Other astronomers are cautious about the find, since it is
based on only a single unconfirmed observation. But if it holds
up, says theorist Stan Woosley of the University of California
at Santa Cruz, "it will be a whole new laboratory for doing
physics. It will be marvelous."
</p>
</body></article>
</text>