Dec 11, 2024 05:51 PM
https://phys.org/news/2024-12-interstell...anets.html
EXCERPTS: Planetary migrations have been the most prominent idea of recent decades, suggesting that planetary interactions caused the young planets to migrate inwards or outwards from their original positions. Now a new theory suggests a two- to 50-Jupiter-mass object passing through the solar system could be the cause.
[...] While protoplanet ejections are thought to have been fairly common as the solar system was forming, on occasion, celestial objects visited us. These objects seem to have been rare and provide a valuable insight into distant planetary systems.
[...] The paper, posted to the arXiv preprint server, was authored by a team of scientists led by Garett Brown University of Toronto. They explore the nature of the eccentricity of the gas giants, suggesting it is unlikely the current theories can explain observations. Instead, they demonstrate that an object with between two to 50 times the mass of Jupiter passing through the solar system was a more likely cause.
[...] Using simulations and approximate values for the properties of the visitor, the team conclude that the theory is the most plausible to date... (MORE - missing details)
EXCERPTS: Planetary migrations have been the most prominent idea of recent decades, suggesting that planetary interactions caused the young planets to migrate inwards or outwards from their original positions. Now a new theory suggests a two- to 50-Jupiter-mass object passing through the solar system could be the cause.
[...] While protoplanet ejections are thought to have been fairly common as the solar system was forming, on occasion, celestial objects visited us. These objects seem to have been rare and provide a valuable insight into distant planetary systems.
[...] The paper, posted to the arXiv preprint server, was authored by a team of scientists led by Garett Brown University of Toronto. They explore the nature of the eccentricity of the gas giants, suggesting it is unlikely the current theories can explain observations. Instead, they demonstrate that an object with between two to 50 times the mass of Jupiter passing through the solar system was a more likely cause.
[...] Using simulations and approximate values for the properties of the visitor, the team conclude that the theory is the most plausible to date... (MORE - missing details)