The aspirations he expressed for America are the ones he should express for our tumultuous planet.

CNN: World to Obama: You can't ignore us

Mars Express will map the Red Planet in unprecedented detail - its best images will see objects down to two metres.

BBC: Mars Express has slotted into its final orbit

That clever piece of engineering was a tiny lander that was carried to the Red Planet in 2003 on board the European Space Agency's Mars Express orbiter.

BBC: Why did the Antarctic drilling project fail?