What was the first satellite launched by the United States
Explorer 1
What was the third nation to successfully launch a manned spacecraft
China
What factors affects the length of season
distance from the sun
The first human being to set foot on the moon
Neil Armstrong
A telescope that uses a large curved mirror as the objective is what kind of telescope
reflecting
Which type of satellites help defend countries against attack and can photograph foreign installation
military satellites
What was the first space station launched
Salyut 1
What is the point on the celestial sphere directly above an observer
zenith
The first person the travel in space
Yuri Gagarin
The first type of spacecraft designed to be reused was
space shuttle
What type of satellites are the satellites of the Global Positioning System
navigational satellites
What is a device that splits light into a spectrum for analysis?
spectrascope
What circle on the celestial sphere runs directly overhead and connects the celestial poles?
meridian
The father of modern rocketry
Robert Goddard
The first artificial object to orbit the earth was
Sputnik 1
What is another name for an objective mirror
primary mirror
What instrument increases an objects brightness by gathering more light than the unaided eye
telescope
What is the path on the celestial sphere that the sun follows in a year
ecliptic
The first American to orbit the earth
John Glenn
An unmanned spacecraft launched specifically to explore the unknown
space probe
14:15
At what point in its orbit does an Earth orbiting satellite travel the fastest
when it is closest to the Earth
What is the replacement of AD that has become popular among those who deny the deity of Jesus
CE
The first chinese astronuat
Yang Liwei
The unit of time, larger than a day that is not based on the motion of a heavenly body is the
week