News tagged with dark energy

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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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Celebrating gravity’s light-bending landmark

(PhysOrg.com) -- Today Oxford University scientists are joining in a special celebration of the first test of Albert Einstein’s theory of gravity on the remote African island where the ground-breaking experiment ...

dateMay 29, 2009 in General Physics
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Cosmology's best standard candles get even better

Members of the international Nearby Supernova Factory (SNfactory), a collaboration among the U.S. Department of Energy's Lawrence Berkeley National Laboratory, a consortium of French laboratories, and Yale ...

dateMay 18, 2009 in Astronomy
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The Milky Way's new companion galaxies

When we think of cosmology, we often imagine the largest telescopes peering into the deepest space, collecting the feeble light from exploding stars or the first galaxies.

dateMar 18, 2015 in Astronomy
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'Planck' puts Einstein to the test

Researchers, including physicists from Heidelberg University, have gained new insights into dark energy and the theory of gravitation by analysing data from the "Planck" satellite mission of the European ...

dateMar 05, 2015 in Astronomy
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How fast is the universe expanding?

The Universe is expanding, but how quickly is it expanding? How far away is everything getting from everything else? And how do we know any of this anyway?

dateFeb 10, 2015 in Astronomy
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