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This set of XSLT stylesheets take a Relax NG grammar in XML syntax, expand all includes and externalRefs, and optionally replace references to text, empty, or notAllowed with the patterns. The result is a 'compiled' schema convenient for distribution. Written by David Tolpin.
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Astronomers track near-Earth objects in space because understanding their paths helps scientists assess potential hazards to Earth. A crash on the moon would not have threatened people. In fact, lunar debris would almost certainly have stayed near the moon, and the impact would not be severe enough to change the moon's orbit. But it would have offered a rare chance to learn from a known asteroid hitting another planetary surface.
Alfred Lasteckand