3/8/2023 0 Comments Place in the sun origin![]() ![]() The slowly rotating core becomes the Sun. Eventually, after the core has been slowed, its temperature rises and the dust evaporates. The modern version assumes that the central condensation contains solid dust grains which create drag in the gas as the centre condenses. The slow spin of the Sun could not be explained. The theory argued that this nebula condensed into rings, which eventually formed the planets and a central mass - the Sun. What was the bright object I saw in the sky last night? The Modern Laplacian theoryįrench astronomer and mathematician Pierre-Simon Laplace first suggested in 1796 that the Sun and the planets formed in a rotating nebula which cooled and collapsed. The low rotation speed of the Sun is explained as being due to its formation before the planets, the terrestrial planets are explained by collisions between the protoplanets close to the Sun, and the giant planets and their satellites are explained as condensations in the drawn out filament. The Sun interacts with a nearby protostar, dragging a filament of material from the protostar. However, it is not clear how the planets came to be confined to a plane or why their rotations are in the same sense. The small blobs would have higher rotation than is seen in the planets of the Solar System, but the theory accounts for this by having the 'planetary blobs' split into planets and satellites. The planets are smaller blobs captured by the star. Dense regions in the cloud form and coalesce as the small blobs have random spins the resulting stars will have low rotation rates. When is the next lunar eclipse? The Protoplanet theoryĪ dense interstellar cloud produces a cluster of stars. The theory does not explain satellites or Bode's law and is therefore considered the weakest of those described here. The terrestrial planets can form in a reasonable time, but the gaseous planets take far too long to form. The problem is that of getting the cloud to form the planets. The Sun passes through a dense interstellar cloud and emerges surrounded by a dusty, gaseous envelope. Taking all these issues into account, science has suggested five key theories considered to be 'reasonable' in that they explain many (but not all) of the phenomena exhibited by the Solar System. Bode's law states that the distances of the planets from the Sun follow a simple arithmetic progression.How did planetary satellites like the Moon come into being?.What about the gas giant planets like Jupiter - were they formed differently?.Terrestrial planets have solid cores - how did they form?.The Sun spins slowly, and only has 1 percent of the angular momentum of the Solar System - but 99.9 percent of its mass.We know that the Sun sits at the centre of the Solar System with the planets in orbit around it, but these throws up five major problems: How did the Sun, planets and moons in the Solar System form? There is a surprising amount of debate and several strong and competing theories, but do scientists have an answer? What are the theories for the origin of the Solar System?Īny theory about how the Solar System came to be has to account for certain, rather tricky facts.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |