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One of the earliest theories for the formation of the planets was called the encounter hypothesis. In this scenario, a rogue star passes close to the Sun about 5 billion years ago. Material, in the form of hot gas, is tidally stripped from the Sun and the rogue star.
The Encounter Hypothesis (Buffon 1745) Scenario: 1. A “near miss” encounter occurs between the Sun and a passing star. 2. Material is pulled from the stellar surfaces by tidal forces. 3. Material cools and condenses to form planetary bodies. Principal Shortcoming: This Requires a highly unlikely event
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 ].
The Encounter Theories of the Origin of the Solar System was published in A Source Book in Astronomy and Astrophysics, 1900–1975 on page 182.
Since the seventeenth century, philosophers and scientists have been forming hypotheses concerning the origins of our Solar System and the Moon and attempting to predict how the Solar System would change in the future.
Feb 1, 2000 · The heliocentric nature of the solar system with its major components — the Sun, planets and satellites — was firmly established well before the end of the 17th century. After the publication of Newton's Principia in 1687 it became possible to apply scientific principles to the problem of its origin.
Formation and evolution of the Solar System. Appearance. Artist's conception of a protoplanetary disk. There is evidence that the formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. [1] .
