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originally posted by: historykel
NASA finds a mysterious asteroid breaking apart, but doesn't have an explanation as to why. Astroid
The scientist think wrong about planet earth and the truth is found with magma , with underground rivers and lakes, our planet is not solid, its very porous with water in the mix. Mass calculations of other planets think wrong to because they use our planet in comparison. My theory is the force of motion just naturally broke something away that wasn't solid in the first place.
…sky survey telescopes detected what looked like an unusually fuzzy object on the far side of the asteroid belt.
originally posted by: rockintitz
a reply to: mobiusmale
I don't think it's emitting photons, just reacting to them.
Very interesting OP.
So why is this asteroid disintegrating before our eyes? In a paper published in the Astrophysical Journal Letters (and on a very helpful website), Jewitt and his research team suggest that the asteroid's breakup is due to the nearly imperceptible force of tiny photons that have been radiating away from the asteroid toward the sun for billions of years.
"Those departing photons put a little push on the asteroid," Jewitt said. "The force is really very weak, but time is long."
In the 19th century, Ivan Yarkovsky realised that the infrared radiation escaping from a body warmed by the Sun carries off momentum as well as heat. Translated into modern physics, each photon escaping carries away a momentum p = E/c where E (= hν) is its energy and c is the speed of light. Radzievskii applied the idea to rotation based on changes in albedo and Paddack and O'Keefe realised that shape was a much more effective means of altering a body's spin rate. Paddack and Rhee suggested that the YORP effect may be the cause of rotational bursting and eventual elimination from the solar system of small asymmetric objects.