| Lunar Footprint |
| Will Probably Last For Millions of Years |
 |
| The footprints left by the astronauts in the Sea of Tranquility are more permanent than most solid structures on Earth. Barring a chance meteorite impact, these impressions in the lunar soil will probably last for millions of years. Photographs of the footprints were actually part of a planned experiment by Aldrin to study the nature of the lunar dust and the effects of pressure on the surface. |