Did A Comet Kill The Dinosaurs?
By Martha Harbison | Australian PopSci Some 66 million years ago, a giant space object of some kind slammed into Earth right around the Yucatan peninsula. The resultant explosion sent debris high into the atmosphere; the dust resettled to earth newly enriched with the elements iridium and osmium – elements that are much more abundant in [...]
Read More →Naked-eye comet inside the orbit of Mercury
Spaceweather Comet Pan-STARRS (C/2011 L4) is now inside the orbit of Mercury and it is brightening as it approaches the sun. Observers in the southern hemisphere say the comet can be seen with the naked eye even through city lights. Currently, it is about as bright as the stars of the Big Dipper (magnitude +2 [...]
Read More →Comet could impact Mars in 2014
By Bruce Powell | The Space Reporter There is a small chance that a newly discovered comet – C/2013 A1 – may be on collision course with the Red Planet. Astronomers are still attempting to determine the trajectory of the comet, which is believed to have a diameter of about 50km (30 miles), but they [...]
Read More →Rare supercomet to outshine moon in 2013
NewsTrack A rare supercomet is rushing towards the sun from the outer solar system, according to scientists. Its closest approach to the sun will be in November next year, they said. At its peak, the supercomet known as C/2012 S1 (ISON), may outshine the moon, even by day, according to the New Scientist. When it comes [...]
Read More →Sun-Grazing Comets As The Trigger For Electromagnetic Armageddon
By Bruce Dorminey | Forbes Large sun-grazing comets could bring on the sort of global electronics meltdown usually associated with electromagnetic pulse weapons or a full-scale nuclear exchange. Or so says David Eichler, lead author of a forthcoming Astrophysical Journal Letters paper positing that a sun-grazing comet roughly the size of Hale-Bopp (with a nucleus some [...]
Read More →Approaching comet may be brightest in a century
by Emma Woollacott | TG Daily A newly-discovered comet looks likely to blaze brightly in our skies late next year. Comet C/2012 S1 (ISON), is due to come within 0.012 astronomical units (AU) of the sun – just 1.1 million miles – on 29 November 2013. How brightly it will shine is still hard to determine, [...]
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