The mirrored surface of the JAXA craft will help it keep its core temperature down to 60C - which is chilly compared to the 160C heat the mirrors will have to withstand - allowing sensitive equipment like, er, cameras and stuff to work out there. The craft also rotates to keep cool, plus rather obviously gains much of its power through solar methods.
Scheduled to launch in 2014, it'll be bringing more joy to fans of photos of grey craters. [Telegraph]
Image Credit: NASA