What is a Comet?
A comet is an icy small solar system body that, when passing close to the Sun, heats up and begins to out-gas, displaying a visible atmosphere or coma, and sometimes also a tail.
•Philae is a robotic European Space Agency Lander.
•On 12th November 2014, the lander achieved the first ever controlled touchdown on a comet nucleus.
•It’s instruments are expected to obtain the first images from comet’s surface.
•Philae’s mission is to land successfully on the surface of a comet, attach itself, and transmit data from the surface about the comet's composition.