I'm immensely excited to hear that the Philae space probe has woken up after a seven-month slumber.
The probe originally landed on comet 67P in an area that obscured sunlight. Philae is solar powered, so after a few quick science experiments it went into hibernation until its host comet came closer to the Sun.
Now it's back on line it will start probing the comet again with the help of the orbiting Rosetta spacecraft. Together they will test what the comet is made of so that scientists can explore how our Solar System began.