For
centuries people have found meaning — or thought they did — in what
they could see in the sky, the shapes of the constellations echoing old
myths, the sudden feathery intrusion of comets, the regular dances of
the planets, the chains of galaxies, spanning unfathomable distances of
time and space.
Since
the 1980s, however, astronomers have been forced to confront the
possibility that most of the universe is invisible, and that all the
glittering chains of galaxies are no more substantial, no more reliable
guides to physical reality, than greasepaint on the face of a clown. Read more.
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