| Astrobiology n - the scientific study of life beyond Earth
Astrobiology is a new science, but it really isn't that new. It has been around since the 1600s, but it was just considered astronomy then. Scientists are now beginning to understand the world around ours.
Europa is one of Jupiter's 63 moons. It is believed to be very habitable under its icy layers.
Most meteorites fall in Antarctica. Some are never found, but there was one from Mars. It is called ALH84001, and contains becteria fossils. This proves that 'aliens' are real, since bacteria is living matter.
To find out more, I would strongly recommend Astrobiology by Fred Bortz.