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Science, Inventions & Space Discuss Solar System May Have Lost Fifth Giant Planet at the General Discussion; When I saw the headline, I thought, "We're gonna need a warrant for Comet's house."... Solar System May Have Lost ...

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Old 11-12-2011, 10:44 PM
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Default Solar System May Have Lost Fifth Giant Planet

When I saw the headline, I thought, "We're gonna need a warrant for Comet's house."...

Solar System May Have Lost Fifth Giant Planet

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Astronomer David Nesvorny from the Southwest Research Institute in Texas believes that the solar system might have once contained a fifth gigantic planet, which was ejected deep into the galaxy in a moment of cosmic turmoil.

By looking at the population of the Kuiper belt — the icy-cold ring of asteroids beyond Neptune — and by studying the historical fingerprints left on the craters of the Moon, Nesvorny was able to piece together clues about our solar system’s adolescence.

He found that a dynamic instability, which occurred about 600 million years into the solar system’s life, greatly affected the orbit of our giant planets and scattered smaller bodies. Some moved into the Kuiper belt and others traveled inwards, marking their course as impacts on the Moon and planets.

But that scenario has a flaw. Slow changes in Jupiter’s orbit would have had a large effect on the orbits of the terrestrial planets. All hell would have broken lose, and the Earth could have collided with Mars or Venus. Something had to change.

“Colleagues suggested a clever way around this problem,” says Nesvorny in a press release. Instead of a slow movement, Jupiter’s orbit could have quickly changed, which would have altered the outer solar system but been less harmful to the inner planets.
To be honest, I think the solar system had a couple of dozen planets, at some point, that just mashed into each other to get the ones we have now like Saturn, Neptune, and Joy Behar...
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Old 11-13-2011, 05:57 PM
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Default Re: Solar System May Have Lost Fifth Giant Planet

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Originally Posted by cnredd View Post
When I saw the headline, I thought, "We're gonna need a warrant for Comet's house."...

Solar System May Have Lost Fifth Giant Planet

To be honest, I think the solar system had a couple of dozen planets, at some point, that just mashed into each other to get the ones we have now like Saturn, Neptune, and Joy Behar...
I still can't believe they declassified Pluto as a planet.
They're going to have to change a lot of textbooks...
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