instrument articles
What is an astralabe used for?
What is the name of Galileo Galilei's telescope?
What are the uses of a spectrometer?
What is the purpose of a spectrometer?
Why are the early telescopes not ideal?
What are the three things used to measure mass?
What is the best definition of telescope?
What was Galileo Galilei's telescope called?
What did Galileo use to study the stars?
What instrument did Galileo use to observe the sky?
What tool is used to measure the distance between stars?
What are two good reasons to use a ground-based telescope instead of a space telescope?
