Photos of the fortnight (March 14- March 27)

People walk by the High Altitude Cherenkov Experiment (HAWC) observatory during its inauguration on the slopes of Pico de Orizaba and Sierra Negra near Puebla on March 20. Sitting at the foot of a volcano in Mexico, this facility looks like a water treatment plant. It's one of the largest and most powerful observatories ever built on earth. Unlike optical observatories that use telescopes to study planets and stars, the HAWC detects high energy cosmic particles to unravel the mysteries of black holes and supernovas. HAWC is able to track where gamma rays originated, no matter how many light years away