During an earthquake, a camera capturing a long exposure of the night sky can capture star trails as seismograms that records the motion of the ground. Back on January 20th, a 6. 7-magnitude earthquake rocked Coquimbo, Chile.
About 56 miles (90km) away, the ESO La Silla Observatory was in the process of shooting images of the […]. petapixel.com
2019-3-16 20:47