NASA SCIence Files™ Series is produced by the NASA Langley Research Center's Office of Education. In this program, the tree house detectives go galactic with their latest project. Learn how long it will take to travel to Mars and how the Moon affects the Earth. Come visit Arecibo, the home of the largest radio telescope in the world and help look for intelligent life in the universe. Join the tree house detectives for an "out-of-this-world" vacation as they explore the future of space travel.