|Image via www.nasa.gov|
The first footprints on the Moon will be there for a million years. There is no wind to blow them away. Two astronauts walked on the Moon and picked up rocks and dirt to bring back to Earth.
I don't know that I will still be blogging when humans put boots on Mars. Most estimates say that won't occur until the 2030s at the earliest. But we have already sent our robotic emissaries there and we have left our mark on the Red Planet.
There have been many landings on Mars. Some have have crashed and failed (Russia’s Mars 3 and Mars 6 landers, NASA’s Mars Polar Lander, the British Beagle 2) but they still sit there on Mars, gathering dust.
|Curiosity rover’s tracks on Mars Photo: NASA/JPL-Caltech/MSSS|
The larger and more sophisticated Curiosity is roving its way through the rugged terrain around Mt Sharp. As it moves, it is leaving a bit more than mere tracks. The engineers who built it included a secret message in the tread on its wheels. Curiosity’s wheels spell out J-P-L as they roll. JPL stands for the Jet Propulsion Lab, where the rover was created.