What was the name of the first U.S. space station?

America had already beaten the Soviets to the moon, but NASA wasn't ready to pack up and call it a day. The agency had bigger dreams than just quick trips to space and back. The Soviets already had their Salyut stations floating around up there, so it was time for the U.S. to stake its own claim in the cosmic real estate market. What was the name of America's first space station?