The Blues lie fourth in the table, seven points adrift of leaders Manchester United, who have a game in hand, with assistant Ray Wilkins coaching the team on an interim basis.

BBC: Chelsea confirm Hiddink as coach

An X-ray of the hand and wrist can show how mature a person's bones are and help predict how much longer he or she will continue to grow.

CNN: What can I do to grow taller?

Brushing the surface of rocks with Curiosity's dust removal tool first enables the arm-held hand lens camera and X-ray spectrometer, in particular, to see features that might otherwise be obstructed.

BBC: Curiosity Mars rover deploys its rock brush