How are you mnemonics?
So here's the would-be list of the twelve known planets:
Mercury
Venus
Earth
Mars
Ceres
Jupiter
Saturn
Uranus
Neptune
Pluto
Charon
"Xena"
Or if we lower the size threshold a bit:
Mercury
Venus
Earth
Mars
Vesta
Ceres
Pallas
Hygiea
Jupiter
Saturn
Uranus
Neptune
Pluto
Charon
Orcus
Ixion
Varuna
TX300
"Santa"
Quaoar
"Easterbunny"
AW197
"Xena"
Sedna
Got that?
1 comment:
Ah for the good old days (1950) when there were 9 planets, Jupiter had 12 moons, and Saturn, Uranus, Neptune, and Pluto had none.
Or for the really old days (Galileo), when there were 6 planets, and Jupiter had only 4 moons. The solar system has been sprouting planets and moons in the last 50 years.
Or for the ancient times, when there were only five planets, the moon, and the stars.
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