NASA's InSight lander was supposed be digging a hole so a probe (above) could measure the heat escaping from Mars' interior, but it hasn't made much progress since work got started in February — it hadn't even finished burying itself. At last, it's…
NASA's InSight lander was supposed be digging a hole so a probe (above) could measure the heat escaping from Mars' interior, but it hasn't made much progress since work got started in February — it hadn't even finished burying itself. At last, it's…