News & Updates

17 March 2014
Tracking HET’s Progress

7 October 2013
VIRUS Units Come Together

9 September 2013
Last Look at Sky Before Upgrade

10 May 2013
Mirror Coating Smooths the Way for HET Upgrade

 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

Relativity, general

"Space tells mass how to move" while "mass tells space how to curve" -- J.A. Wheeler. Einstein created this model, which describes gravity as a curvature in space-time, which is the four-dimensional fabric of our universe. His theory is the best model for gravity so far, and has been confirmed in experiments and observations. According to the theory, regardless of one's point of view (as measured by speed and direction), physical law and the speed of light are unchanged. This implies that measurements made in time and space are not absolute, but relative to your particular point of view or reference frame. General relativity led to concepts and theories such as black holes, parallel universes, worm holes, and space-time.

Media Gallery


Harold C. Simmons Dark Energy Optical System (mock-up)

Find more images, video, and podcasts in the gallery.