Washington (dpa) – . After around four years on Mars, NASA’s “Insight” lander has sent its possibly last image to earth. “I’m almost out of power, that might be the last picture I can send,” said Tuesday night on the Twitter channel of the lander operated by NASA. The image shows the area of Martian soil directly in front of the lander. NASA had already declared in November that “Insight” would only have energy for a few weeks. The reason for this is the dust from the Red Planet, which is becoming thicker and thicker on the solar modules.