Planets is the STEM song from the episode Robots in Space. It is sung by Blaze and AJ and plays after the Monster Machines escape the collapsing wormhole.
Blaze, AJ: Planets are spinning round and round
Orbiting around the sun
(Whoa-oa, whoa-oa, whoa-oa-oa-oa)
Blaze: Mercury's fast, and Venus is hot
Earth's the one that's full of life
(Whoa-oa, whoa-oa, whoa-oa-oa-oa) AJ: Mars is red, Jupiter's biggest
And Saturn's got rings made of ice
(Whoa-oa, whoa-oa, whoa-oa-oa-oa)
Blaze, AJ: Uranus, Neptune are big gas balls
The dwarf planet Pluto is really small
Planets are spinning round and round
Orbiting around
Orbiting around the sun