Jupiter, like other planets, rotates around its vertical axis, but it is also a gas giant planet, which means that it is largely composed of gaseous and liquid elements in a massive atmosphere, which surrounds a rocky core. Like most other planets, it Jupiter s oriented more or less vertically on the solar plane, meaning that its North and South Poles receive less solar energy than its equatorial zone, which is located around the horizontal circumference of the planet. Jupiter's rotational speed is quite fast, and since its mass is gas/liquid instead of solid, it has a central bulge around the equator, causing it to be not a perfect sphere, but an oblate sphere (this characteristic is seen even in rocky planets like Earth, because of the sheer length of time it has been rotating). Interestingly, Jupiter's equator would be expected to hotter than its Poles because of the increased impact of solar energy; however, because of its gas/liquid nature, convection within Jupiter's atmosphere causes heat to circulate easily up to the Poles. This causes Jupiter's overall temperature, at least at its cloud layer, to be more balanced than on other planets. With its powerful magnetic field and gasses emitted from the moon Io, Jupiter has a plasma sheet around its equator, which both deforms the planetary magnetic field, and also emits radio wave bursts.