A shuttlecraft, also known as a shuttle spacecraft, shuttle ship, drop shuttle, drop spacecraft, or dropship, is a type of spacecraft described in theory and science fiction. Serving the same purpose as a ship's tender, it is a smaller vessel that is launched from a mother ship, and has the ability to transport people or cargo between ships, or to and from a planet's surface without being damaged or destroyed. It has a secondary purpose as an evacuation ship if the mother ship is destroyed. While the Space Shuttle was envisioned to make this type of craft a reality and reduce the cost of going into space, it ultimately failed in its goal and expendable launch systems remained a more cost-effective option.