History articles
What was the problem with early telescopes?
What is an astralabe used for?
What was the significance of Galileo's observations of the moon?
Did Galileo observe the Milky Way?
What are the five elements of alchemy?
Did Giovanni Schiaparelli observe canals on Mars?
How did we determine the size of the Earth?
What was Galileo's vision?
Why are the early telescopes not ideal?
What was one disadvantage of the early refracting telescope?
Who is the greatest astronomer of all time?
How did Edwin Hubble help Albert Einstein?
Is Galileo still active?
What benefits did the Space Race bring?
What is considered the birthplace of astronomy?
