Astronomers spot a six-tailed asteroid
Itâ€™s comets, of course, that we associate with tails. These dusty balls of ice occasionally swing into our neighborhood of the Solar System from their usual home beyond the planets. When they get closer to the inner Solar System, a wispy atmosphere of warmed dust and gas is blown into a tail by the Sun. Asteroids, on the other hand, are rocky or metallic bodies mostly found in a belt between the orbits of Mars and Jupiter.
The strange object astronomers spotted in August was located in the inner portion of the asteroid belt but appeared to have a tail of material extending from it. This contradiction is not completely unknownâ€”a handful of such â€śactive asteroidsâ€ť have been found in the past. Some might contain ice that heats up, turns to gas, and shoots outward, and some might simply be the short-lived aftermath of a collision with a smaller body. Given the limited number of observations, though, little is known.
When astronomers trained the Hubble Space Telescope on this active asteroid a couple weeks later, they discovered that it actually boasted a splayed array of tails.
Sources and more information:
Nasa astronomers have announced the discovery of a "weird and freakish object" by the Hubble telescope - the first ever six-tailed asteroid, found spinning through space between the orbits of Mars and Jupiter. "We were literally dumbfounded when we saw it," said David Jewitt, lead investigator on the project and professor at the University of...
( via arstechnica.com )
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