We Landed a Spacecraft on a Comet!

The European Space Agency’s (ESA) Rosetta has become immortalised in space history as the first mission to land a spacecraft on a comet.

The ESA’s Rosetta mission sent a washing-machine-size probe named Philae to the surface of comet 67P/Churyumov-Gerasimenko.

Rosetta lander Philae

Despite a thruster failure on Wednesday, the three-legged, 100-kilogram probe set down successfully using harpoons and ice screws to anchor itself to the rubber-duck-shaped comet, to begin what could be up to a year or more of intensive scrutiny of the comet’s composition and structure.

The landing was predicted to be particularly fraught because of the comet’s rough surface, which is covered with boulders, crevasses and craters. Against all the odds, the 100-kilogram lander arrived safely within its target site.

Comet_67P_on_19_September_2014_NavCam_mosaic

Rosetta was launched on 2 March 2004 and travelled 6.4 billion kilometres through the solar system before arriving at the comet in August.

During its decade-long journey, Rosetta has continued to push the boundaries of space engineering, from its three slingshot flybys of Earth and its two and a half year hibernation to Philae’s completely automated descent and landing.

Learn more here, here, here, here, here, here, here or here.

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