The footprints left by Apollo astronauts on the Moon will likely remain visible for millions of years because there is no wind or water to erase them.
Sources
- https://bigthink.com/starts-with-a-bang/astronaut-footprints-disappearing-moon/ (bigthink.com)
- https://spacedaily.com/t-the-footprints-left-by-apollo-astronauts-on-the-lunar-surface-will-remain-there-undisturbed-for-at-least-ten-million-years-there-is-no-wind-no-rain-and-almost-nothing-to-erase-them/ (spacedaily.com)
- https://ucmp.berkeley.edu/science/trackways/photo4_popup.php (ucmp.berkeley.edu)
- https://starchild.gsfc.nasa.gov/docs/StarChild/space_level1/apollo11.html (starchild.gsfc.nasa.gov)
- https://www.space.com/14740-footprints-moon.html (space.com)
- https://iere.org/can-you-see-footprints-on-the-moon/ (iere.org)
- https://content.time.com/time/specials/packages/article/0,28804,1929328_1929325_1929284,00.html (content.time.com)
- https://biologyinsights.com/are-there-still-footprints-on-the-moon/ (biologyinsights.com)
- https://www.nbcnews.com/news/amp/wbna44421662 (nbcnews.com)
More in Space
- The largest known structure in the universe is the Hercules-Corona Borealis Great Wall, a galactic filament spanning roughly 10 billion light-years.
- There are more stars in the observable universe than grains of sand on all of Earth's beaches—estimated at 10^24 stars versus roughly 10^18 to 10^19 grains.
- Saturn's moon Titan has lakes and rivers of liquid methane and ethane, making it the only body in our solar system besides Earth with stable surface liquids.
- A day on Venus is longer than its year—Venus takes 243 Earth days to rotate once but only 225 Earth days to orbit the Sun.