ESA 's comet probe Rosetta wakes up , beams a signal back to Earth . The signals are sent at the speed of light and take about 10 minutes for them to reach us on earth. Scientist must now learn how to maneuver the craft around the environment of the comet . The mission will give scientists unprecedented insight into the makeup and structure of these ancient residents of the solar system , ESA officials say . Rosetta is set to meet up with the comet in August , follow it for two years .
ESA 's comet probe Rosetta wakes up , beams a signal back to Earth . The signals are sent at the speed of light and take about 10 minutes for them to reach us on earth. Scientist must now learn how to maneuver the craft around the environment of the comet . Rosetta is set to meet up with the comet in August , follow it for two years .