In 1961, Yuri Gagarin became the first person to orbit ________
the Earth
the Sun
the Moon
Mars
In ________, Apollo 11 landed on the Moon.
1949
1959
1969
1979
Engineers built spacecraft that astronauts could live and ___ experiments.
perform
develop
observe
discover
The Hubble telescope is a _______ that observe the solar system and the universe.
space station
sample
equipment
satellite
______ spacecraft are an integral part of the discovery of our solar system and beyond.
scientific
effective
international
unmanned
The first international spacecraft is ______
the Apollo-Soyuz
Skylab
Mir
Hubble
Yuri Gagarin is a/an ________ astronaut.
Russian
American
European
Canadian
Some satellites are used for communication, GPS, and _________
performing experiments
sending people into space
weather forecasting
housing astronauts
