Babak Tafreshi, one of the ESO Photo Ambassadors, has captured a curious phenomenon on the Chajnantor plateau, the site of the Atacama Large Millimeter/submillimeter array (ALMA). These bizarre ice and snow formations are known as penitentes (Spanish for “penitents”). They are illuminated by the…

Icy Penitents by Moonlight on Chajnantor

Babak Tafreshi, one of the ESO Photo Ambassadors, has captured a curious phenomenon on the Chajnantor plateau, the site of the Atacama Large Millimeter/submillimeter array (ALMA). These bizarre ice and snow formations are known as penitentes (Spanish for “penitents”). They are illuminated by the…