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 samples, not just from Earth but also from the moon, as well as meteorites formed in the early solar system. All that data, taken together, is how they determined Earth’s age.