Quote:
Aside from the asteroid’s hulking mass, another thing that intrigues astronomers about QE2 is that nobody can say with any certainty where it came from.
One clue to its origins, however, is that its surface is said to be covered with a sticky, black residue, suggesting that it may be the remains of a comet that came in close proximity to the sun, Amy Mainzer, a researcher at Jet Propulsion Laboratory at La Cañada Flintridge, California, told the Los Angeles Times.
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An interesting article, read more here.
http://myscienceacademy.org/2013/05/...roaches-earth/
A nice image here taken tonight 30/5, from Andrew Wall which he posted on facebook: