Hunting planets with laser rulers
Thursday, May 31, 2012 - 16:34
in Astronomy & Space
Laser frequency combs can be used for the calibration of astronomical spectrographs. This will help to find extra-solar planets, i.e. planets that are orbiting a star outside our solar-system. By refining this technology it might become possible to directly measure even very small changes in the expansion velocity of the universe.