Module 1 - The Solar SystemMain MenuThe Solar SystemPlanetary FactsTerrestrial PlanetsThe Outer PlanetsPlutoOrbits, Rotation and TemperatureSolar System DebrisComposition of the solar systemThe Solar System to ScaleBeyond the PlanetsPlanetary HighlightsMercuryVenusEarthEarth's MoonMarsJupiterSaturnUranusNeptuneThe End! - Well, of Module 1Frank Fuetendee05431475b87c68ebf15bbea4bfeac11808e9e
1media/01 The Solar System PIA10231.jpg2016-04-05T10:08:09+00:00Orbits, Rotation and Temperature10image_header2019-12-29T14:53:08+00:00All planets orbit the Sun in the same sense:
Each planet rotates and the axis and sense of rotation of these planets is very similar. With the exception of Venus, Uranus and Pluto, the rotation axes of the planets are approximately parallel to the rotation axis of the sun and the sense of rotation is the same as illustrated in this image. As you might expect, planetary temperature decreases with increasing distance from the Sun. The farther from the Sun the planet, the colder it is. The big exception to that rule is Venus as illustrated in the graphic below (For comparison, the temperature to melt lead is 327.5˚C). We'll discuss that later. The temperatures in the graphic below of the gas and ice giants (Jupiter, Saturn, Uranus, and Neptune) are taken from a level in the atmosphere equal in pressure to sea level on Earth. There are also lots of objects besides planets in the solar system, as we'll see next.