When folded up, the Beagle 2
lander resembles a very large
pocket watch. This is the
state in which it will pass the
long journey to Mars. As soon
as it comes to a halt on the
martian surface, however,
Beagle 2's outer casing will
open to reveal the inner
workings. First, solar panels will unfold: they will catch sunlight to
charge the batteries which will power the lander and its
experiments throughout the mission. Next, a robotic
arm will spring to life. Attached to the end of the arm
will be Beagle's PAW (Payload Adjustable Workbench)
where most of the experiments are situated. These
include a pair of stereo cameras, a microscope, two
types of spectrometer (Mössbauer and X-ray), and a
torch to illuminate surfaces. The PAW also houses the
corer/grinder and the mole, two devices for collecting
rock and soil samples for analysis.