News tagged with cosmological data

Is dark energy static or dynamic?

(Phys.org)—While hypothesized dark energy can explain observations of the universe expanding at an accelerating rate, the specific properties of dark energy are still an enigma. Scientists think that dark energy could take ...

dateNov 12, 2012 in General Physics feature
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Dark matter mystery deepens

(PhysOrg.com) -- Like all galaxies, our Milky Way is home to a strange substance called dark matter. Dark matter is invisible, betraying its presence only through its gravitational pull. Without dark matter ...

dateOct 17, 2011 in Astronomy
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Madly Mapping the Universe

(PhysOrg.com) -- It takes special software to map the universe from noisy data. A Berkeley Lab code called MADmap does just that for the cosmic microwave background and has now been adapted by scientists probing ...

dateFeb 04, 2010 in Space Exploration
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Search results for cosmological data

Cause of galactic death: Strangulation

As murder mysteries go, it's a big one: how do galaxies die and what kills them? A new study, published today in the journal Nature, has found that the primary cause of galactic death is strangulation, which ...

dateMay 13, 2015 in Astronomy
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Delta Cephei's hidden companion

To measure distances in the universe, astronomers use cepheids, a family of variable stars whose luminosity varies with time. Their role as distance calibrators has brought them attention from researchers ...

dateMay 12, 2015 in Astronomy
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What shape is the universe?

The universe. It's the only home we've ever known. Thanks to its intrinsic physical laws, the known constants of nature, and the heavy-metal-spewing fireballs known as supernovae we are little tiny beings ...

dateMay 12, 2015 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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The riddle of galactic thin–thick disk solved

A long-standing puzzle regarding the nature of disk galaxies has finally been solved by a team of astronomers led by Ivan Minchev from the Leibniz Institute for Astrophysics Potsdam (AIP), using state-of-the-art ...

dateApr 24, 2015 in Astronomy
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Virtual telescope expands to see black holes

Astronomers building an Earth-size virtual telescope capable of photographing the event horizon of the black hole at the center of our Milky Way have extended their instrument to the bottom of the Earth—the ...

dateApr 21, 2015 in Astronomy
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List of search results for cosmological data