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Jupiter might have shaped the Solar System on its grand tack. In planetary astronomy, the grand tack hypothesis proposes that Jupiter formed at a distance of 3.5 AU from the Sun, then migrated inward to 1.5 AU, before reversing course due to capturing Saturn in an orbital resonance, eventually halting near its current orbit at 5.2 AU.
The jumping-Jupiter scenario specifies an evolution of giant-planet migration described by the Nice model, in which an ice giant (Uranus, Neptune, or an additional Neptune-mass planet) is scattered inward by Saturn and outward by Jupiter, causing their semi-major axes to jump, and thereby quickly separating their orbits. [1]
A Jupiter-mass planet in a typical protoplanetary disk is expected to undergo migration at approximately the Type II rate, with the transition from Type I to Type II occurring at roughly the mass of Saturn, as a partial gap is opened. [11] [12] Type II migration is one explanation for the formation of hot Jupiters. [13]
Saturn and Jupiter may be gas giants now, but according to some experts, they were once nothing more than tiny pebbles, and a recent study supports that assertion. The prevailing theory is that ...
The original core of the Nice model is a triplet of papers published in the general science journal Nature in 2005 by an international collaboration of scientists. [4] [5] [6] In these publications, the four authors proposed that after the dissipation of the gas and dust of the primordial Solar System disk, the four giant planets (Jupiter, Saturn, Uranus, and Neptune) were originally found on ...
Saturn would later have begun to migrate inwards at a faster rate than Jupiter until the two planets became captured in a 3:2 mean motion resonance at approximately 1.5 AU (220 million km; 140 million mi) from the Sun. [32] This changed the direction of migration, causing them to migrate away from the Sun and out of the inner system to their ...
The holiday season holds a special gift, as skygazers on Earth will be treated to a great conjunction of the planets Jupiter and Saturn. Using binoculars or a backyard telescope, it will not only ...
The planets Venus, bottom, and Jupiter, top, light the sky above Matthews, N.C., Monday, June 29, 2015. (AP Photo/Chuck Burton) ... Saturn is bright enough to see with the naked eye, but using a ...