This photo was taken by NASA’s early Mars rover, which was decommissioned in the late 1990s and has been operating for about three months. What makes this image so unique? It is understood that it shows the “bimodal” scene of Mars, which has been hidden in people’s eyes for 20 years. < / P > < p > unless you are very familiar with NASA’s history, you may not be familiar with the Pathfinder mission, which is related to a tiny Mars probe called sojourner. The probe was deployed to Mars in the late 1990s and is expected to spend seven days exploring the red planet there. But the mission eventually lasted 83 days. < / P > < p > NASA originally intended to use Pathfinder to demonstrate its ability to efficiently and economically launch landers to Mars and deploy Rovers capable of operating on Mars. Since then, NASA has tried many more times and achieved fairly lasting results. < / P > < p > during this period, Pathfinder sent back 2.3 billion bits of data, including thousands of photos – 550 of which were taken by sojourner, according to NASA. NASA recently dug up the above image, which highlights two geomorphic features visible in the background – they look like bimodal from a distance. Global Tech