 Once the escaped satellite re-entered Phaeton's Hill sphere, it collided with the planet at high speed, shattering it while Ceres, Pallas, Juno, and Vesta assumed heliocentric orbits.Simulations showed that for such a Ceres-sized body to shatter Phaeton, it would need to be travelling at nearly 20 kilometers per second.The disrupted planet hypothesis has also been supported by French-Italian mathematician and astronomer Joseph-Louis Lagrange; Canadian geologist Reginald Daly in 1943; American geochemists Harrison Brown and Clair Patterson; Soviet academics Konstantin Savchenko, Alexander Zavaritskiy, Vasily Fesenkov, Ivan Putilin, and Otto Schmidt; British-Canadian astronomer Michael Ovenden; and American astronomer Donald Menzel.