Rosetta is attempting to become first spacecraft to orbit and land on a comet . but you can follow the progress of the mission on Rosetta 's blog and find out more with CNN 's interactive coverage . Comment: Scientists hope to learn more about the composition of comets . The robotic lander Philae is due to touch down in November .
Rosetta is attempting to become first spacecraft to orbit and land on a comet . Comment: Scientists hope to learn more about the composition of comets . The robotic lander Philae is due to touch down in November .