Galileo (use) the telescope to view the stars and planets before Isaac Newton (invent) the first reflecting telescope.
had used - invented
On November 3, 1957, the Russian dog Laika (become) the first animal in orbit after fruit flies (be sent) to outer space by the United States.
became - had been sent
In 1971, the United Kingdom successfully (launch) its satellite into orbit after China (do) that one year earlier.
launched - had done
It is cheaper to build an unmanned ________than the one that is manned. SPACE
SPACECRAFT
Have you ever experienced _________ ? WEIGHT
weightlessness
On the ISS, ________ have to attach themselves so they don‟t float around. ASTRONOMY
astronauts
The mission not only taught NASA about Venus, but also how to operate/launch/orbit a spacecraft far from Earth.
operate
The tail of a orbit/comet/astronaut can extend over 84 million miles, nearly the distance between the earth and the sun.
comet
Sally Ride became the first American woman astronaut/astronomy/mission to fly in space in 1983 when she was 32 years old.
astronaut
The orbit/launch/spacesuit of Apollo 13 was delayed from March 12th to April 11th, 1970 to give the new prime crew more time to train.
launch
