1. The moon harbors large amounts of water ice, along with lots of other potentially useful compounds. These resources could theoretically support manned lunar bases, which could serve as staging grounds for further exploration of the solar system, and as proving grounds for outposts on Mars
-
2. The International Space Station is a large spacecraft. It orbits around Earth. It is a home where astronauts live. The space station is also a science lab. Many countries worked together to build it. They also work together to use it. The space station is made of many pieces. The pieces were put together in space by astronauts. The space station's orbit is approximately 250 miles above Earth. NASA uses the station to learn about living and working in space. These lessons will help NASA explore space.