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Whose discovery showed that Venus has phases like the Moon, helping confirm that it orbits the Sun?
Quick Answer
That discovery is credited to Galileo Galilei. In 1610, his telescope showed that Venus goes through a full set of phases.
The Full Story
Galileo observed Venus through a telescope in 1610 and found that it shows phases from crescent to nearly full. Those changes made sense only if Venus orbits the Sun, not Earth. The observation was a major blow to the old geocentric model of the cosmos. It became one of the most important pieces of evidence for heliocentrism.
Key Facts
1.Galileo made the observation in 1610
2.Venus shows a full set of phases
3.The finding supported heliocentrism
YouTube Angle
Suggested video title for this topic:
"A telescope proved Venus wasn’t circling Earth the way people expected."
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