The landing time reportedly took a nerve-wrecking 7 hours as this would essentially be the first time that a spacecraft from Earth has landed on the surface of a comet that has been hurtling through deep space, which will undoubtedly give us a lot of information from its surface that we might not have had before.
The landing of the Philae will monitor the Comet 67P/C-G from the surface as the Rosetta spacecraft orbits the comet while investigating the comet from above. The scientists are hoping that the Philae will be able to remain in place until March 2015, all the while collecting and transmitting data back to Earth.
This is important research as it is believed that comets were responsible for bringing water to Earth. According to Stanley Cowley, a planetary scientist at the University of Leicester in England, “Comet impacts are thought to have been one of the principal means by which water was delivered to the early Earth, around 3.6 billion years ago, possibly contributing half the water in our oceans.”