September 28, 2012
Shockwaves From Sun Helped To Shape Solar System
Lee Rannals for redOrbit.com - Your Universe Online
Shockwaves emitted by our young sun in its early days would have caused the planets in our solar system to form, according to research presented at the European Planetary Science Congress.
Astronomers modeled the movements of particles in fluids and gases in the gas cloud from which our Sun accreted.
Their work suggests that during its early days, the Sun emitted a series of shockwaves that rippled out into the remaining material. This reaction created a series of debris rings around the Sun that accreted over millions of years into planets.
The latest work indicates that the first series of shockwaves during short but rapid changes in solar activity would have created the proto-planetary rings for Uranus, Neptune and Pluto. The planets Jupiter and Saturn, as well as the asteroid belt, would have come next, followed by Mercury, Venus, Earth, and Mars.
This discovery also shows that Earth is one of the youngest planets in the solar system.
“The planets formed in intervals -- not altogether, as was previously thought,” said Dr. Tagir Abdylmyanov, Associate Professor from Kazan State Power Engineering University. “It is difficult to say exactly how much time would have separated these groups, but the proto-planetary rings for Uranus, Neptune and Pluto would have likely formed very close to the Sun´s birth."
He said he hopes this research will help us have a better understanding of the development of planets around distant stars.
“Studying the brightness of stars that are in the process of forming could give indications as to the intensity of stellar shockwaves. In this way we may be able to predict the location of planets around far-flung stars millions of years before they have formed," Abdylmyanov added.