Matt Taylor's tattoos
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Rosetta scientist Matt Taylor tattooed landing on thigh

One of the thrusters on the lander is not working, but will that hamper the success of the Rosetta mission?

Project scientist Matt Taylor says he is so confident the European Space Agency will land its probe on the comet, that he has got himself a new tattoo to celebrate.

He told the BBC's Rebecca Morelle that they were hoping the lander would avoid boulders and cliffs when it touched down.

Go to next video: What is the comet's structure like?