Hot Comets

  Sep 12, 2012 Comets are said to be composed of “dusty ices.” Why have crystalline structures that require high temperatures been found in them? On February 7, 1999 NASA launched the Stardust spacecraft on a mission to collect dust particles from the coma of comet Wild 2 and then…

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Cold Plasma

  Sep 10, 2012 Rather than simply clouds of dust and gas, spiraling filaments in nebulae suggest electric currents in space. The Orion Nebula is faintly visible to the naked eye as the second star in Orion’s sword. It looks somewhat fuzzy because it is not a star but a…

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On the Move

   Sep 07, 2012 The Mars Science Laboratory has begun its journey to Mount Sharp Mars is composed mostly of iron and silicon, with massive quantities of oxygen bound into the soils and bedrock. Although quite a bit like Earth’s geology in some respects, the Martian crust is low in…

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Saturn’s Auroral Ovals

Saturn's twin aurorae

  Sep 06, 2012 Astrophysicists are beginning to acknowledge the role that electricity plays in space. The Cassini-Huygens mission (now called Cassini-Equinox) was launched from Cape Canaveral on October 15, 1997. Its primary mission is the exploration of the Saturnian system, including Saturn’s atmosphere, its rings, its magnetosphere and a number of its moons….

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Dark Minds

   Sep 05, 2012 Astronomers have finally observed “dark galaxies,” proving again that if you look hard enough for what you believe, you’ll find it (or something that’s close enough). Dark galaxies, like the many other dark things in modern astronomy’s black box of unobservables, are predicted by the theory…

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Sub-Europa

Europa, Earth and the Moon

  Sep 04, 2012 Could an ocean of liquid water exist on Europa? According to a recent press release, “Sending a submarine to the bottom of the ocean on Jupiter’s icy moon Europa is the most exciting potential mission in planetary science…” Is it a forlorn hope? Europa is the fourth…

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