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Transcript
Voyage to the Planets Order of Planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune My Very Eager Money Jumped Some Ugly New Plants Origins of the Planets Our solar system was part of a nebula that consisted mainly of hydrogen and helium Nebula - cloud in outer space, comprised of gas and dust Nebula Origins of the Planets Solid matter formed from neighboring supernova explosions from nearby stars Supernova - Huge explosion that occurs after a massive star’s life. Solid matter makes up approximately 1% of the nebula. (rock, ice, iron) Supernova Creation of Jovian Planets The matter joined into clumps and contracted in the outer regions of the nebula. They are often referred to as “Gas Giants.” The force of gravity caused these clumps to form the Jovian planets (Jupiter, Saturn, Uranus and Neptune) Creation of Terrestrial Planets The gases were too hot to condense due to the close location to the sun and blown away from the sun’s solar wind, leaving only the solid chunks behind. As they continued to circulate around the sun, they joined together forming larger chunks. This caused a strong gravity around them and pulled all the matter in space around them, forming the Terrestrial Planets (Mercury, Venus, Earth and Mars) What about Pluto? Pluto is neither considered Jovian nor Terrestrial. Its size is too small to be labeled as Jovian Planet and too far from the sun to be considered Terrestrial. Terrestrial vs. Jovian Terrestrial • Small in diameter • Close to the sun • Few moons • Thin atmosphere • High density interior • Rotate slowly Jovian • Large in diameter • Far from the sun • Many moons • Thick atmosphere • Low density interior • Rotate rapidly
