(Phys.org)—Astronomers using NASA's Spitzer Space Telescope have announced the most precise measurement yet of the Hubble constant, or the rate at which our universe is stretching apart.

Space & Earth - Astronomy

Oct 03, 2012 4.9 / 5 (17) 11 |

(PhysOrg.com) -- Astronomers using NASA's Hubble Space Telescope have ruled out an alternate theory on the nature of dark energy after recalculating the expansion rate of the universe to unprecedented accuracy.

Space & Earth - Astronomy

Mar 14, 2011 4.6 / 5 (25) 92 |