News & Updates

5 November 2015
Upgraded Hobby-Eberly Telescope Sees First Light

28 June 2015
Sophisticated set of mirrors will sharpen, widen HET’s view of the sky

31 March 2015
Engineers install, test cryogenic system

17 March 2014
Tracking HET’s Progress

 Dark energy is not only terribly important for astronomy, it's the central problem for physics. It's been the bone in our throat for a long time.”

Steven Weinberg
Nobel Laureate
University of Texas at Austin

 

 

Video

A video introduction to dark energy, narrated by StarDate's Sandy Wood - Play video

Glossary

Spectroscopy

A technique used by astronomers to determine the properties of celestial objects by breaking their light into its individual wavelengths or color and analyzing the intensity of each wavelength. Each element absorbs and emits light in a unique set of wavelengths, so the astronomer can sift through the spectrum of a star and determine what elements are present in the star. Spectroscopy also allows astronomers to measure an object's motion toward or away from Earth, its temperature, and other properties. HETDEX will use spectroscopy to measure the properties of at least one million galaxies, including their motion and distance.

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