June 3, 2021
June 3, 2021 Earth rotation, from 22 still images, obtained by NASA’s Earth Polychromatic Imaging Camera (EPIC) camera on the Deep Space Climate Observatory (DSCOVR) spacecraft, on September 17, 2015. Image via NASA. Humans have likely pondered the question of the age of the Earth since we first developed a sense of time. The best scientific research to date suggests that our planet formed about 4.54 billion years ago. That’s 4,540,000,000 years! Researchers studied the most ancient rocks s...