What planets did galileo discover
Galileo's accomplishments did not include any planet discoveries but were significant nonetheless. The 6 planets known in his time had been known since antiquity. With the help of the newly invented telescope however, Galileo discovered the 4 largest moons of Jupiter. That discovery alone was quite extraordinary but it was its ramification that created more problems.
Back in the 17th century, is was essentially Church doctrine that the Earth is at the center of the universe and that everything else - everything - revolved around it. What Galileo found was not only do these moons exist, they revolve around Jupiter, not the Earth. This what ultimately got him exiled in his later life.
One other discovery Galileo had using the telescope was that Saturn had "ears" on each side. Later, as telescopes became larger and could resolve more detail, it was found that the "ears" was actually a ring around the planet.
Sep 08, 2014 |