ÜDS-Fen 2003-1 Soru=60

According to the passage, the expansion of the universe —.

In terms of pure science, the discovery that the
universe is in the grip of a strange "anti-gravity" force
that is making it expand ever faster, is the most
significant of the last decade. The possibility that
such a force might exist has been known for years,
with theorists finding that it kept reappearing out of
Einstein's theory of gravity. For years they tried to
avoid it coming up with all sorts of arguments for
why the force couldn't really exist. Now they're being
forced to face it, and to face the embarrassing fact
that they can't explain the single most important
force in the universe.