David Grinspoon Quote
Must choose a geological deposit to mark our time, one that is uniquely human-born, I would suggest the area of Mare Tranquilitatis, the Sea of Tranquility, on the Moon, where the Apollo 11 astronauts first stepped onto the soil of another world, hopped about, did experiments, took rocks and soil, and left behind machines, flags, and footprints. Those boot marks will fade in a few million years as micrometeorites grind them into the surrounding dust, but the overall disturbance of this site, including the alien artifacts we left there, will surely be detectable for as long as there is an Earth and a Moon. This could not have been produced by any other species.
Must choose a geological deposit to mark our time, one that is uniquely human-born, I would suggest the area of Mare Tranquilitatis, the Sea of Tranquility, on the Moon, where the Apollo 11 astronauts first stepped onto the soil of another world, hopped about, did experiments, took rocks and soil, and left behind machines, flags, and footprints. Those boot marks will fade in a few million years as micrometeorites grind them into the surrounding dust, but the overall disturbance of this site, including the alien artifacts we left there, will surely be detectable for as long as there is an Earth and a Moon. This could not have been produced by any other species.
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About David Grinspoon
His research focuses on comparative planetology, with a focus on climate evolution on Earth-like planets and implications for habitability. He has also studied, written and lectured on the human influence on Earth, as seen in cosmic perspective.
He has published four books, Venus Revealed, which was a finalist for the Los Angeles Times book prize, Lonely Planets: The Natural Philosophy of Alien Life, which won the 2004 PEN literary award for nonfiction, Earth in Human Hands, which was named one of NPR's Science Friday "Best Science Books of 2016" and Chasing New Horizons: Inside the Epic First Mission to Pluto, co-authored with Alan Stern. He is adjunct professor of Astrophysical and Planetary Science at the University of Colorado, a former Fellow of the Institute for Cross-Disciplinary Engagement at Dartmouth College and a former Distinguished Visiting Scholar in the College of the Environment at Wesleyan University.