space news from around the webin association with SpaceNews

Galaxy data used to study dark energy
Posted: Sat, Feb 2, 2008, 4:59 PM ET (2159 GMT)
Dark energy map (ESO) Astronomers are using observations of thousands of galaxies to determine if dark energy, a mysterious force thought to be responsive for the acceleration of the expansion of the universe, actually exists. In a paper published in the latest issue of the journal Nature, European scientists described how they are using spectroscopic data of thousands of galaxies collected by the European Southern Observatory's Very Large Telescope. The observations allow astronomers to measure the local motions of galaxies, which create distortions in the cosmic redshift data that astronomers can then use to probe for the existence of dark energy. Initial examinations of the data do support the existence of dark energy, but astronomers said they cannot yet rule out a competing explanation, an alternative theory of gravitation.
<<previous article   next article>>
news in brief
Tropical storm delays next Artemis 1 launch attempt
Posted: Sun, Sep 25 8:56 AM ET (1256 GMT)

Soyuz delivers new crew to ISS
Posted: Sun, Sep 25 8:49 AM ET (1249 GMT)

Pentagon to phase out use of GEO missile warning satellites
Posted: Sun, Sep 25 8:46 AM ET (1246 GMT)

news links
Saturday, October 1

about   ·   ·   mailing list