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A video introduction to dark energy "A video introduction to dark energy, narrated by StarDate's Sandy Wood..."	Darren DePoy "Two kinds of major breakthroughs..." "Two dark energy experiments..."
Eiichiro Komatsu "Characteristic pattern..." "Distance scale..." "Multiple techniques..."	Gary Hill "The favored solution..." "An interesting telescope..." "An interesting way..." "Just a name..." "Near the North Pole..." "Too many theories..."	Jennifer Marshall "Challenges in building the VIRUS spectrograph ..."
Karl Gebhardt "Hard to define..." "Measure the expansion..." "Our ignorance..." "Property of space..." "With a spectrum..." "We're going to build a hundred and fifty of these..."	Niv Drory "Something wrong with Einstein's Theory?..." "Trying to detect about a million galaxies ..."
HET Virtual Tour A 360° view inside the dome
Images HETDEX Search Area: HETDEX will search a large region of the sky that overlaps the Big Dipper. While the Dipper's stars are only a few dozen light-years away, though, the galaxies that HETDEX will target are around 10 billion light-years away. [Tim Jones] \| View all images Subscribe to our free podcast with iTunes.

Copyright ©2008-2012 McDonald Observatory. HETDEX is a collaboration of The University of Texas at Austin, Pennsylvania State University, Texas A&M University, Universitats-Sternwärte Munich, Astrophysical Institute Potsdam, and Max-Planck-Institut fuer Extraterrestrische Physik. Financial support is provided by the State of Texas, the United States Air Force, the National Science Foundation and the generous contributions of many private foundations and individuals.

Videos