Science: Visitor from Space?

Meteors, most astronomers think, are merely junior members of the solar system—fragments of comets or wandering bits of a blown-up planet. But a few experts still cling to the more romantic theory that some meteors hit the earth after traveling across interstellar space, perhaps for billions of years, from some other part of the Milky Way galaxy (of which the solar system is a part).

One such learned romanticist is Dr. Lincoln La Paz, of the University of New Mexico. Last week Dr. La Paz announced his conclusion that a 600-lb. meteorite recently dug up near Ardmore, Okla. is probably one of...

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