Admin What caused stars and planets to form from space dust?
A massive concentration of interstellar gas and dust created a molecular cloud that would form the sun’s birthplace. Gravity continued to collapse the material onto the infant object, creating a star and a disk of material from which the planets would form.
What is the name of the theory that claims the solar system formed from a cloud of gas & dust?
the nebular hypothesis
Our solar system formed at the same time as our Sun as described in the nebular hypothesis. The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets [12].
What is the accretion theory?
Accretion is the gradual increase in size by the buildup of matter due to gravity. It’s explained by nebular theory, which describes the forces and processes at play as a nebula spins and accretes into a star and its planets orbiting it.
Why is this star surrounded by so much rock dust and gas?
Infrared light is a type of energy. High levels of infrared radiation near a star suggest that the star is surrounded by dust. The dust absorbs visible light from the star and, in turn, emits infrared radiation, which is detectable as heat.
What evidence suggests that planets form in disks?
Observational evidence shows that most protostars are surrounded by disks with large-enough diameters and enough mass (as much as 10% that of the Sun) to form planets.
How do scientists think the planets formed?
The various planets are thought to have formed from the solar nebula, the disc-shaped cloud of gas and dust left over from the Sun’s formation. The currently accepted method by which the planets formed is accretion, in which the planets began as dust grains in orbit around the central protostar.
Who propounded the theory of Solar System answer?
French philosopher and mathematician René Descartes was the first to propose a model for the origin of the Solar System in his book The World, written from 1629 to 1633.
What are the different hypothesis explaining the origin of the Solar System?
These are the Nebular Hypothesis of Laplace, the Planetesimal Hypothesis of Chamberlin and Moulton, and the Capture Theory of See. Darwings theory of Tidal Friction is scarcely a distinct hypothesis, but is mentioned separately on account of its application to all of the others.