See. However, Pierre-Simon Laplace refuted this idea in 1796, stating that any planets formed in such a way would eventually crash into the Sun. Attempts to resolve the angular momentum problem led to the temporary abandonment of the nebular hypothesis in favor of a return to "two-body" hypotheses. c. Horizontal motion is dependent on vertical motion. Planet LHB-A, the explosion for which is postulated to have caused the Late Heavy Bombardment (LHB) about 4 eons ago, was twinned with Jupiter, and LHB-B, the explosion for which is postulated to have caused another LHB, was twinned with Saturn. The nebular hypothesis, developed by Immanuel Kant and given scientific form by P. S. Laplace at the end of the 18th cent., assumed that the solar system in its first state was a nebula, a hot, slowly rotating mass of rarefied matter, which gradually cooled and contracted, the rotation becoming more rapid, in turn giving the nebula a flattened . Encounter Hypothesis by Ella Abundabar - Prezi Aggregation of these cometismals produced giant planets, which in turn produced disks during their formation, which evolved into lunar systems. This material became compressed, making the interior so hot that it brought about a chemical reaction called hydrogen fusion. According to the nebular hypothesis, part of an interstellar cloud of dust and gas underwent gravitational collapse to form a primeval solar nebula. The Protoplanet and Planetesimal hypothesis also have similarities such as the date they were proposed. Reeves, H. 1978. A few such floccules agglomerated, reached a critical mass . At this stage, radiation removed excess energy, the disk would cool over a relatively short period of about 1 million years, and the condensation into what Whipple calls cometismals took place. Who are the experts? Dermott, ed., pp. Under these conditions, considerable ionization would be present, and the gas would be accelerated by magnetic fields, hence the angular momentum could be transferred from the Sun. The Planetesimal hypothesis is not the only hypothesis the Protoplanet hypothesis shares similarities with. cit.). Ray Lyttleton modified the hypothesis by showing that a third body was not necessary and proposing that a mechanism of line accretion, as described by Bondi and Hoyle in 1944, enabled cloud material to be captured by the star (Williams and Cremin, 1968, loc. Fred Hoyle noted that, even while the distribution of elements was fairly uniform, different stars had varying amounts of each element. In planets LHB-A, Jupiter, LHB-B, and Saturn, the inner and smaller partner in each pair was subjected to enormous tidal stresses, causing it to blow up. The method whereby the disk transforms into distinct planets.
similarities of encounter hypothesis and protoplanet hypothesis