Astronomy Picture of the Day

Nobels for a Strange Universe  Image Credit: High-Z Supernova Search Team, HST, NASA Explanation: Thirteen years ago results were first presented indicating that most of the energy in our universe is not in stars or galaxies but is tied to space itself. In the language of cosmologists, a large cosmological constant is directly implied by new distant supernovaobservations. Suggestions of a cosmological constant (lambda) were not new -- they have existed since the advent ... Full Story