Ordonner les Lettres Planets of the Solar SystemVersion en ligne Put the letters in order to discover the name of the 8 planets of the Solar System. Be careful, you got 20 seconds per planet, and a maximum of 5 mistakes! par Educaplay Educational Resources 1 Y R E U C R M 2 E U S V N 3 A T H R E 4 A S R M 5 J I P E T U R 6 A S T R N U 7 N U S U A R 8 E E N U N T P