8. Today it is 7 minutes 31 seconds. Two thousand years ago it was 7 minutes 34 seconds. Two thousand years in the future it will be about 7 minutes 27 seconds. The shortening of the durations is caused by the Moon moving slowly away from the Earth, at a rate of about 1.5 inch per year, a phenomenon caused by ocean tides.
Science — History — Biography
Kilauea Volcano
Taken near the entrance of Hawai`i Volcanoes National Park (which is now closed) on May 15, 2018, at 11:28 am.