News Cover article of Natural Sciences journal (Feb 2022 issue)

UVic's Prof. Justin Albert (together with Profs. Dima Budker at Mainz, and Hossein Sadeghpour at the Harvard-Smithsonian CfA) are the authors of the cover article in this month's Natural Sciences journal.  This article provides an overview of how a laser photometric ratio star (a novel light source generated by laser excitation of the Earth's upper-atmosphere sodium layer, which will radiate equally brightly at wavelengths of 589 nm and 820 nm) can help us precisely calibrate telescopes at observatories (such as the Vera Rubin Observatory, presently completing construction in Chile) in order to understand the nature of dark energy.