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Comet ISON Into the Inner Solar System for a Close Encounter with the Sun - Might Hit the Earth with Meteoroids in Early 2014

Friday, April 19, 2013 13:39

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April 19, 2013: Anticipation is building as Comet ISON plunges into the inner solar system for a close encounter with the sun in November 2013. Blasted at point-blank range by solar radiation, the sungrazer will likely become one of the finest comets in many years.

When NASA’s Swift spacecraft observed the comet in January 2013, it was still near the orbit of Jupiter, but already very active. More than 112,000 pounds of dust were spewing from the comet’s nucleus every minute.

It turns out, some of that dust might end up on Earth.

ScienceCasts: Comet ISON Meteor Shower

Sungrazing Comet ISON, a bright naked-eye object later this year

Sungrazing Comet ISON, expected to become a bright naked-eye object later this year, might hit the Earth with meteoroids in early 2014. Scientists and Researchers discuss the possibilities in this week’s

ScienceCast.

Veteran meteor researcher Paul Wiegert of the University of Western Ontario has been using a computer to model the trajectory of dust ejected by Comet ISON, and his findings suggest that an unusual meteor shower could be in the offing.

“For several days around January 12, 2014, Earth will pass through a stream of fine-grained debris from Comet ISON,” says Wiegert. “The resulting shower could have some interesting properties.

According to Wiegert’s computer models, the debris stream is populated with extremely tiny grains of dust, no more than a few microns wide, pushed toward Earth by the gentle radiation pressure of the sun. They will be hitting at a speed of 56 km/s or 125,000 mph. Because the particles are so small, Earth’s upper atmosphere will rapidly slow them to a stop.

“Instead of burning up in a flash of light, they will drift gently down to the Earth below,” he says.

Don’t expect to notice. The invisible rain of comet dust, if it occurs, would be very slow. It can take months or even years for fine dust to settle out of the high atmosphere.

While the dust is “up there,” it could produce noctilucent clouds (NLCs).

NLCs are icy clouds that glow electric-blue as they float more than 80 km above Earth’s poles. Recent data from NASA’s AIM spacecraft suggests that NLCs are seeded by space dust. Tiny meteoroids act as nucleating points where water molecules gather; the resulting ice crystals assemble into clouds at the edge of space itself.

This is still speculative, but Comet ISON could provide the seeds for a noctilucent display. Electric-blue ripples over Earth’s polar regions might be the only visible sign that a shower is underway.

Wiegert notes another curiosity: “The shower is going to hit our planet from two directions at once.”

When Earth passes through the debris stream, we will encounter two populations of comet dust. One swarm of dust will be following the Comet ISON into the sun. Another swarm will be moving in the opposite direction, pushed away from the sun by solar radiation pressure. The streams will pepper opposite sides of Earth simultaneously.

“In my experience, this kind of double whammy is unprecedented,” says Wiegert.

Bill Cooke, lead scientist at NASA’s Meteoroid Environment Office, says there’s little danger to Earth-orbiting spacecraft. “These particles are just too small to penetrate the walls of our satellites, and they don’t stand a chance against the heavy shielding of the ISS.” However, he adds, mission operators will be alert around January 12th for possible anomalies.

Sky watchers should probably be alert, too. The odds of seeing anything are low, but Comet ISON could prove full of surprises.

Credits:

Author: Dr. Tony Phillips | Production editor: Dr. Tony Phillips | Credit: Science@NASA

More information:

Comet of the Century? – ScienceCast video about Comet ISON

follow the link to watch the video

https://www.youtube.com/watch?v=a6lC9NxmoIA

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Paul Gilbert

Mother Shipton Prophecy

A fiery dragon will cross the sky – 7A: The first comet cluster appears.
six times before the earth shall die (has died). – 8: It has appeared 6 times before.
Mankind will tremble and frightened be – 2: Pervasive global fear, 1926 – 2026.
for the six heralds in this prophecy. – 1: Mass death – Subject of this Prophecy.

This prophecy is about the first part of the sixth recorded comet strike on Earth (circa 2006 or 2007). See the table on this sites index (first) page for the others dating back to the destruction of Atlantis 11,676 years ago. Note that Shipton refers to the comet or comet swarm in terms of the Dragon as does the following verses found in Revelation Chapter 12:

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Verse 3. A comet swarm with 7 or 10 obvious comets

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Verse 4. Lots of shooting stars or small meteoroids from the comet’s debris field.

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Verse 6. People (a woman) flee to the wilds (desert) and hide out for 1,260 days.

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Verse 7. The comet swarms Taimat and Marduk appear to “fight”.

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Verse 13. A comet strikes Earth.

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Verse 15. A tsunami results.

Apr 20, 2013, 11:59 am 0 Reply

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