“Once-in-a-century” ISON comet could be visible from Earth during the daytime

Last year, astronomers using the Russian International Scientific Optical Network (ISON) spied something intriguing just beyond the orbit of Jupiter: a cometary body so large, and with a trajectory that will bring it so close to the Sun, that it could potentially be visible from Earth in the middle of the day (not unlike Comet McNaught, pictured above, was in 2007), and outshine the Moon at night. More »

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“Once-in-a-century” ISON comet could be visible from Earth during the daytime