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Dark Energy

A term that describes the accelerating expansion of the universe. The expansion may be caused by a “repulsive” force that makes the universe expand faster as it ages, a discrepancy in the laws of gravity, or some other phenomenon.


The universe seems to be pervaded with a previously unknown, and still unexplain

Dark Energy May 21, 2010

Radio Programs

HETDEX A new look at ancient galaxies April 9, 2017

Dark Energy One of the great mysteries of the universe April 8, 2017

WFIRST Unwrapping a Christmas present March 17, 2016

Featured Images

Technicians replace equipment for HETDEX at McDonald Observatory

On (and Off) Track November 4, 2013

Artist's concept of upgraded Hobby-Eberly Telescope

Facelift for Science June 3, 2011

Hobby-Eberly Telescope at McDonald Observatory

Searching the Darkness October 15, 2010