they've also never explored anything beyond the Moon
yeah, and im barack obama... dude, you call others stupid and ignorant when you do not know anything about the solar system and claim that you do...
"In December 1995, NASA's Galileo spacecraft dropped a probe into Jupiter's atmosphere, which collected the first direct measurements of the atmosphere."
"CONFLICTING THEORIES
Two theories have long conflicted: One, he noted, suggests that part of a vast whirling cloud of dust and gas called the solar nebula condensed billions of years ago to form the sun and the giant gas planets like Jupiter and Saturn.
The other theory, however, holds that Jupiter originally was nothing but the rocky core that still remains in its deepest heart, and that its exterior accreted over the eons by a constant rain of "icy planetesimals" -- frozen objects like tiny comets -- spawned far out in the Milky Way galaxy.
The probe's findings, after every tiny detail has been analyzed and all the scientific debates are in, "may help us to decide which of the two concepts is correct," Owens said. Or, as all the Galileo scientists know well, the findings may suggest another and wholly unanticipated theory.
The relative scarcity of helium posed another mystery, said Ulf von Zahn of the University of Bonn in Germany. In the sun, where hydrogen and helium together constitute 99 percent of the solar matter, helium alone is about 26 percent of that total. But on Jupiter, von Zahn said, the proportion of helium to hydrogen that the probe found is only half that. Perhaps, he said, the helium has migrated inward toward the planet's rocky core.
But if more detailed analysis of the probe's results shows that the the ratio of helium to hydrogen on Jupiter is in fact far different from the sun's, then theories of the solar nebula's role in the planet's formation will surely demand much more thought, von Zahn said.
In any case, the scientists all agreed, these first findings from the Galileo probe will lead to new ideas not only about Jupiter's formation, but about the origins of planet Earth as well."
Jupiter is completely unlike Earth, it's a gas giant...Earth incase you didn't notice is not.
really? man, i think you are the smartest person i have ever met... i also thought the earth was flat!!!!