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Do we need dark matter?

It's the biggest problem in physics: the matter we can see in the universe accounts for just five per cent of the observed gravity that holds galaxies together.

dateNov 12, 2009 in General Physics
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Radio telescopes extend astronomy's best 'yardstick'

Radio astronomers have directly measured the distance to a faraway galaxy, providing a valuable "yardstick" for calibrating large astronomical distances and demonstrating a vital method that could help determine the elusive ...

dateJun 08, 2009 in Astronomy
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Brian Schmidt discusses the fast-firing universe

In 1998, a team led by a former Harvard graduate student shocked the astrophysics world by publishing results that said the expansion of the universe, believed to be gradually slowing, was instead accelerating.

dateApr 28, 2015 in Astronomy
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