Planets in Order of Their Formation Date

Can you name the planets of the solar system in order from the oldest to youngest ones?
For planets with ranges as to their formation dates, the formation date was calculated based on the mean of the minimum and maximum formation date
It is likely that there was a third ice giant that was ejected from the solar system roughly 4 billion years ago, and it has been filled in already
According to ChatGPT
Scaled by total planet formation date
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MeowILoveCats123
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Last updated: August 16, 2025
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First submittedAugust 16, 2025
Times taken8
Average score87.5%
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Formation Date
Planet
Appearance
4.5635 Billion Years Ago
Jupiter
4.5605 Billion Years Ago
Saturn
4.56 Billion Years Ago
Mercury
4.55 Billion Years Ago
Venus
4.5475 Billion Years Ago
Fifth Giant
4.54 Billion Years Ago
Uranus
4.535 Billion Years Ago
Earth
4.535 Billion Years Ago
Neptune
4.53 Billion Years Ago
Mars
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