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