This is the best place for an optical telescope
mountain (high elevation)
This is anything related to the moon
What is lunar
This probe entered orbit around Mercury
Messenger
This is used to monitor weather
What is a satellite
What object is used so people can work in space?
What is a space station
What was the first satellite into space?
What is Sputnik 1
This was the first orbiter sent to Saturn
Cassini
Space probes relay messages to earth using these
radio waves
This type of energy is emitted by stars
radiant
This was the first optical space telescope
Hubble
The first planet studied by using a space probe
What is Venus
this type of spacecraft is always manned
This probe arrived at Pluto in 2015
New Horizons
This is used to overcome the force of gravity
rocket
other than water and source of energy, this is needed for life
organic molecules