My comments are in RED:
When is a comet not a comet?
Hubble astronomers observe bizarre six-tailed asteroid
How can they claim that the asteroid is not a comet when it clearly is? How can they not take the hint that comets and asteroids are in all likelihood related animals?
7 November 2013
Astronomers using the NASA/ESA Hubble Space Telescope have observed a unique and baffling object in the asteroid belt that looks like a rotating lawn sprinkler or badminton shuttlecock. While this object is on an asteroid-like orbit, it looks like a comet, and is sending out tails of dust into space.
LOL! "While this object is on an asteroid-like orbit, it looks like a comet, and is sending out tails of dust into space." Are they actually that seriously confused about this? How can their statement be taken seriously?
Normal asteroids appear as tiny points of light. But this asteroid, designated P/2013 P5, has six comet-like tails of dust radiating from it like the spokes on a wheel. It was first spotted in August of this year as an unusually fuzzy-looking object by astronomers using the Pan-STARRS 1 telescope in Hawaii .
Again LOL! What do the observations tell the scientists, then, according to the scientific method? Are they even awake when they go to work?
Because nothing like this has ever been seen before, astronomers are scratching their heads to find an adequate explanation for its mysterious appearance.
Maybe they need to revisit their understanding of comets! Why has this apparently NOT occurred to them at any point? Do mainstream astronomers just think they already know everything about the cosmos and their theories are not to be replaced by anything at any time?
The multiple tails were discovered in Hubble images taken on 10 September 2013. When Hubble returned to the asteroid on 23 September, its appearance had totally changed. It looked as if the entire structure had swung around.
"We were literally dumbfounded when we saw it," said lead investigator David Jewitt of the University of California at Los Angeles, USA. "Even more amazingly, its tail structures change dramatically in just 13 days as it belches out dust. That also caught us by surprise. It's hard to believe we're looking at an asteroid."
LOL! HHah AHAHHAHAHAhHhhAHHAhAHAHAHhaHHAhAhahaAaa. Yes it is hard to believe that they're "looking at an asteroid" when it isn't one!
One explanation for the odd appearance is that the asteroid's rotation rate increased to the point where its surface started flying apart, ejecting dust in episodic eruptions that started last spring. The team rules out an asteroid impact because a lot of dust would have been blasted into space all at once, whereas P5 has ejected dust intermittently over a period of at least five months .
That whole unlikely scenario is an explanation? LOL!
Careful modelling by team member Jessica Agarwal of the Max Planck Institute for Solar System Research in Lindau, Germany, showed that the tails could have been formed by a series of impulsive dust-ejection events . Radiation pressure from the Sun smears out the dust into streamers. "Given our observations and modelling, we infer that P/2013 P5 might be losing dust as it rotates at high speed," says Agarwal. "The Sun then drags this dust into the distinct tails we're seeing."
All of that yet no connection is made--NONE--to any glimmer of a suspicion that comets and asteroids are related objects and often the same things? That never enters their scientific brain matter? Not ever!
The asteroid could possibly have been spun up to a high speed as pressure from the Sun's light exerted a torque on the body. If the asteroid's spin rate became fast enough, Jewitt said, the asteroid's weak gravity would no longer be able to hold it together. Dust might avalanche down towards the equator, and maybe shatter and fall off, eventually drifting into space to make a tail. So far, only a small fraction of the main mass, perhaps 100 to 1000 tonnes of dust, has been lost. The asteroid is thousands of times more massive, with a radius of up to 240 metres.
More of the same pseudo-intellectual and overly-complicated, reaching, specious, speculation. It is not only "overthinking" the wrong thing but under-thinking the simple and the elegant reality that is in plain sight. It is as if there is foul mud over their eyes.
Follow-up observations may show whether the dust leaves the asteroid in the equatorial plane, which would be quite strong evidence for a rotational breakup. Astronomers will also try to measure the asteroid's true spin rate.
Yet that still does not address in actual terms why or how the "asteroid" is behaving as it is.
Jewitt's interpretation implies that rotational breakup may be a common phenomenon in the asteroid belt; it may even be the main way in which small asteroids "die" . "In astronomy, where you find one, you eventually find a whole bunch more," Jewitt said. "This is just an amazing object to us, and almost certainly the first of many more to come."
At least they admit that where there is smoke there is fire, ie, more to come.
The paper from Jewitt's team appears online in the 7 November issue of The Astrophysical Journal Letters.