In 1958, American satellites began to explore space, but it wasn't until astronauts began their own exploration in 1961 that humans got to go. You can just imagine the excitement on July 20, 1969, when American astronauts took their first steps on the moon! Space exploration was here to stay. A government program called the National Aeronautics and Space Administration (NASA) is responsible for all launches. Just like in 1958, today's launches take place at the Kennedy Space Center in Florida. Based on information from the text, in which year did astronauts first walk on the moon?

1958
1961
1969
1995