The Sun-Earth Connection | Space News

Our reporter Cameron Mercer continues his interview with Steve Smith, managing editor of the Thunderbolts Picture of the Day. The Earth-Sun connection, as part of the electrified heliosphere, makes clear that the Sun will never be properly understood apart from the electric currents through which planets and their satellites continually…

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Iapetus

  Jul 26, 2013 The Cassini space probe’s flyby of Iapetus confirms its electrical attributes. The closest images of Iapetus ever taken came from the Cassini spacecraft as it flew to within 5000 kilometers of its target, resolving features as small as ten meters. In a previous Picture of the Day article…

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Comets and Galaxies

  Jul 25, 2013 Galactic tails, bright comas, and central nuclei are reminiscent of comets. What is a comet? Most astronomers think comets are small, fragile, irregularly shaped objects composed mostly of water ice and dust, along with carbon and silicon-based compounds. “Dirty snowballs,” as Fred Whipple described them in…

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Flagellar Motors

Jul 20, 2013 Rotating motors propel some bacteria. Some bacteria can swim through their tiny worlds. They accomplish this feat with the aid of spinning propellors called “flagella”. The species of bacteria with this capability that is most familiar to readers is probably Escherichia coli, or E-coli. E-coli possesses a…

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Phobos

The north pole of Phobos. Credit: ESA/DLR/FU Berlin (G. Neukum)

Editor’s note: The new Picture of the Day that normally appears on Friday will delayed until Saturday. Meanwhile, please continue to enjoy this one about the enigmatic Martian moon Phobos for another day. Jul 18, 2013 Did meteor bombardment scar Phobos? Phobos is the largest of the two moons of Mars. Deimos is…

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Cluster Conundrum

  Jul 16, 2013 A distant galaxy cluster is said to exhibit evidence for an unknown force. Not a single reference is made to the most powerful known force in the Universe: electricity. The European Space Agency’s XMM Newton X-ray Telescope research team has found a grouping of galaxies containing more than…

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