Topic: Is Comet Elenin Affecting Earth?
mightymoe's photo
Thu 07/21/11 07:09 PM
Edited by mightymoe on Thu 07/21/11 07:14 PM
FEMA, FCC Announce Nationwide Test Of The Emergency Alert System.

This Test is Scheduled to Take Place on November 9, 2011. this is the first nationwide test of the Emergency Alert System. This test will allow the President of the United States to address the American public. I think they picked this date just in case Asteroid YU 55 changes course and hits Earth, the President may need to make an announcement like "Asteroid YU 55 is going to hit Earth in 7 hours, please get away from the coasts and go to higher ground." If Nasa knows that "Asteroid YU 55" will hit Earth on 11-9-11 would they tell us, NO. I am not saying it is going to hit the Earth, but if it was they would not tell us until the event was close to happening, because it would cause mass panic. Nasa could not possibly just sit back and do nothing. Maybe they could make a video telling their employees to get prepared for a possible catastrophic event, and this is exactly what they have done. YU 55 may not be this event, but it does seem like somethings up that they may not be telling us about.

http://electroniccigarettes4life.com/Elenin/

http://beforeitsnews.com/story/844/406/Asteroid_YU55_To_Hit_The_Moon.html

mightymoe's photo
Thu 07/21/11 07:27 PM
she uploaded this march 9, 2011, 2 days before that Japanese earthquake

http://www.youtube.com/watch?v=r7QAZPb-IEQ&feature=channel_video_title

mightymoe's photo
Thu 07/21/11 07:29 PM
Quote from NASA Buzzroom:
"these are my calculations, but I've revised the 0.24AU's down to 0.0004617 AU's on 21.42pm 16th Oct 2011
(pretty god dam close!) thats about 50,000 miles away from earth.” NASA buzzroom was shut down a month later.
The Wise and South Pole Infared Telescopes have been taken offline by NASA. Infared is the only way to see dark objects.

The 9-11-01 World Trade Center disaster connection

On 9-11-11 it will be the 10th anniversary of the 911 disaster. It is also the date that Elenin passes though the ecliptic plane of our solar system and is closest to the Sun. 11-9-2001 is the way most of the world outside the USA views this date. To them is was the 11-9 disaster. The name Elenin or “ELEven-NINe” could be code for the date 11-9-11. On 11-9-11 Earth will cross Elenin’s orbital path/debris field. We may experience a very intense meteor shower from the small asteroids following Elenin or could actually be hit if there are larger asteroids in Elenins tail. USA (Month/Day/Year) and the rest of the world (Day/Month/Year.)

mightymoe's photo
Thu 07/21/11 07:39 PM
Edited by mightymoe on Thu 07/21/11 07:41 PM



Elenins Coma/Sun is 870,000 miles wide. Tail 45 million miles long. Earth's possible days of darkness are magenta. Illustration showing that Elenin may eclipse the Earth causing 2-3 days of darkness.
(We do not know what size Elenin's coma or tail will be, so this is based on a possible what if scenario.)

Comet tails can easily extend 10s of millions of miles in length, and in some rare super-comets, over 100 million miles. The nuclear regions is perhaps only 10-50 kilometers across, but can produce a 'coma' larger than the diameter of the Sun. Comet Hale-Bopp in 1999 shows a coma size that is equal to the diameter of the Sun!

Fact: We have two objects heading toward Earth, that will come very close to us.

Fact: The governments of the world are building 1000’s of huge underground shelters.

Fact: FEMA has been very busy, building camps and have acquired millions of body bags. They are preparing for some big event. They are also stock piling a billion dollars of dehydrated food.

Fact: The movie “Deep Impact” has some very strange parallels to what is happening now. The in the movie the comet was given the code name E.L.E (Extinction Level Event) close to Elenin.

Fact: It appears the 2012 Mayan calendar end, may actually be October 28th 2011. Very close to time we pass though Elenins debris field.

Fact: The end of the world Hopis prophecy talks about two celestial objects, "Red Kachina" and "Blue Kachina". Two events, one messes us up and the next ends us.(Kachina=Star or comet)

Fact: The world is many problems right now, war, riots and disasters of all kinds.


The 3 Days of Darkness Prophesy is spoken of by many Saints and Seers.

Saint Padre Pio: An uninterrupted rain of fire will take place and after three nights, the earthquakes and fire will cease. On the following day the sun will shine again. angels will descend from Heaven and will spread the spirit of peace over the earth. Let no one go across the yard, even to feed the animals--he who steps outside will perish! (2-07-1950) Many other saints repeat this same story.

Marie Julie Jahenny: The three days of darkness which will be "on a Thursday, Friday, and Saturday "The sky will be on fire, the Earth will split...During these three days of darkness let the blessed candle be lighted everywhere, for no other light will shine...No one outside a shelter will survive. The Earth will shake and the fear will be great.

Interesting to note here 9-15-11 is a Thursday one of the days Elenin passes between Earth and Sun.

Grand Elder Grandfather Cirilo Perez Oxlaj - leader of the National Mayan Council of Elders of Guatemala; Day Keeper of the Mayan Calendar; 13th generation Quiche Mayan Spiritual Leader says:

“Every 5200 years we come to this point when the Earth becomes dark for a period of 60 to 70 hours… I tell you to all my brothers do not be afraid. The sun will go dark, the planet Earth will not see the sun, but we should understand it is like the New Year.”

no photo
Thu 07/21/11 09:20 PM
May 04, 2011

NASA site: http://www.jpl.nasa.gov/news/news.cfm?release=2011-135

You may have heard the news: Comet Elenin is coming to the inner-solar system this fall. Comet Elenin (also known by its astronomical name C/2010 X1), was first detected on Dec. 10, 2010 by Leonid Elenin, an observer in Lyubertsy, Russia, who made the discovery "remotely" using the ISON-NM observatory near Mayhill, New Mexico. At the time of the discovery, the comet was about 647 million kilometers (401 million miles) from Earth. Over the past four-and-a-half months, the comet has – as comets do – closed the distance to Earth's vicinity as it makes its way closer to perihelion (its closest point to the sun). As of May 4, Elenin's distance is about 274 million kilometers (170 million miles).

"That is what happens with these long-period comets that come in from way outside our planetary system," said Don Yeomans of NASA's Near-Earth Object Program Office at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "They make these long, majestic, speedy arcs through our solar system, and sometimes they put on a great show. But not Elenin. Right now that comet looks kind of wimpy."

How does a NASA scientist define cometary wimpiness?

"We're talking about how a comet looks as it safely flies past us," said Yeomans. "Some cometary visitors arriving from beyond the planetary region – like Hale-Bopp in 1997 -- have really lit up the night sky where you can see them easily with the naked eye as they safely transit the inner-solar system. But Elenin is trending toward the other end of the spectrum. You'll probably need a good pair of binoculars, clear skies, and a dark, secluded location to see it even on its brightest night."

Comet Elenin should be at its brightest shortly before the time of its closest approach to Earth on Oct. 16 of this year. At its closest point, it will be 35 million kilometers (22 million miles) from us. Can this icy interloper influence us from where it is, or where it will be in the future? What about this celestial object inspiring some shifting of the tides or even tectonic plates here on Earth? There have been some incorrect Internet speculations that external forces could cause comet Elenin to come closer.

"Comet Elenin will not encounter any dark bodies that could perturb its orbit, nor will it influence us in any way here on Earth," said Yeomans. "It will get no closer to Earth than 35 million kilometers [about 22 million miles]. "

"Comet Elenin will not only be far away, it is also on the small side for comets," said Yeomans. "And comets are not the most densely-packed objects out there. They usually have the density of something akin to loosely packed icy dirt.

"So you've got a modest-sized icy dirtball that is getting no closer than 35 million kilometers," said Yeomans. "It will have an immeasurably miniscule influence on our planet. By comparison, my subcompact automobile exerts a greater influence on the ocean's tides than comet Elenin ever will."

Yeomans did have one final thought on comet Elenin.

"This comet may not put on a great show. Just as certainly, it will not cause any disruptions here on Earth. But there is a cause to marvel," said Yeomans. "This intrepid little traveler will offer astronomers a chance to study a relatively young comet that came here from well beyond our solar system's planetary region. After a short while, it will be headed back out again, and we will not see or hear from Elenin for thousands of years. That's pretty cool."

NASA detects, tracks and characterizes asteroids and comets passing relatively close to Earth using both ground- and space-based telescopes. The Near-Earth Object Observations Program, commonly called "Spaceguard," discovers these objects, characterizes a subset of them, and predicts their paths to determine if any could be potentially hazardous to our planet.

JPL manages the Near-Earth Object Program Office for NASA's Science Mission Directorate in Washington, DC. JPL is a division of the California Institute of Technology in Pasadena.

More information about asteroids and near-Earth objects is at: http://www.jpl.nasa.gov/asteroidwatch , and on Twitter: @asteroidwatch .

mightymoe's photo
Thu 07/21/11 09:33 PM

May 04, 2011

NASA site: http://www.jpl.nasa.gov/news/news.cfm?release=2011-135

You may have heard the news: Comet Elenin is coming to the inner-solar system this fall. Comet Elenin (also known by its astronomical name C/2010 X1), was first detected on Dec. 10, 2010 by Leonid Elenin, an observer in Lyubertsy, Russia, who made the discovery "remotely" using the ISON-NM observatory near Mayhill, New Mexico. At the time of the discovery, the comet was about 647 million kilometers (401 million miles) from Earth. Over the past four-and-a-half months, the comet has – as comets do – closed the distance to Earth's vicinity as it makes its way closer to perihelion (its closest point to the sun). As of May 4, Elenin's distance is about 274 million kilometers (170 million miles).

"That is what happens with these long-period comets that come in from way outside our planetary system," said Don Yeomans of NASA's Near-Earth Object Program Office at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "They make these long, majestic, speedy arcs through our solar system, and sometimes they put on a great show. But not Elenin. Right now that comet looks kind of wimpy."

How does a NASA scientist define cometary wimpiness?

"We're talking about how a comet looks as it safely flies past us," said Yeomans. "Some cometary visitors arriving from beyond the planetary region – like Hale-Bopp in 1997 -- have really lit up the night sky where you can see them easily with the naked eye as they safely transit the inner-solar system. But Elenin is trending toward the other end of the spectrum. You'll probably need a good pair of binoculars, clear skies, and a dark, secluded location to see it even on its brightest night."

Comet Elenin should be at its brightest shortly before the time of its closest approach to Earth on Oct. 16 of this year. At its closest point, it will be 35 million kilometers (22 million miles) from us. Can this icy interloper influence us from where it is, or where it will be in the future? What about this celestial object inspiring some shifting of the tides or even tectonic plates here on Earth? There have been some incorrect Internet speculations that external forces could cause comet Elenin to come closer.

"Comet Elenin will not encounter any dark bodies that could perturb its orbit, nor will it influence us in any way here on Earth," said Yeomans. "It will get no closer to Earth than 35 million kilometers [about 22 million miles]. "

"Comet Elenin will not only be far away, it is also on the small side for comets," said Yeomans. "And comets are not the most densely-packed objects out there. They usually have the density of something akin to loosely packed icy dirt.

"So you've got a modest-sized icy dirtball that is getting no closer than 35 million kilometers," said Yeomans. "It will have an immeasurably miniscule influence on our planet. By comparison, my subcompact automobile exerts a greater influence on the ocean's tides than comet Elenin ever will."

Yeomans did have one final thought on comet Elenin.

"This comet may not put on a great show. Just as certainly, it will not cause any disruptions here on Earth. But there is a cause to marvel," said Yeomans. "This intrepid little traveler will offer astronomers a chance to study a relatively young comet that came here from well beyond our solar system's planetary region. After a short while, it will be headed back out again, and we will not see or hear from Elenin for thousands of years. That's pretty cool."

NASA detects, tracks and characterizes asteroids and comets passing relatively close to Earth using both ground- and space-based telescopes. The Near-Earth Object Observations Program, commonly called "Spaceguard," discovers these objects, characterizes a subset of them, and predicts their paths to determine if any could be potentially hazardous to our planet.

JPL manages the Near-Earth Object Program Office for NASA's Science Mission Directorate in Washington, DC. JPL is a division of the California Institute of Technology in Pasadena.

More information about asteroids and near-Earth objects is at: http://www.jpl.nasa.gov/asteroidwatch , and on Twitter: @asteroidwatch .


while i like NASA and what they do, they are a part of the government and have to follow what the government says... as i posted in a post above, the only 2 earth based telescopes that can see dark objects have been shut down at NASA's orders... Nasa has known about this since 1984, and is still down playing this quite a bit...

no photo
Thu 07/21/11 10:05 PM
While I don't really trust NASA I don't trust those religious doom sayers either. In fact I trust them less.


mightymoe's photo
Thu 07/21/11 10:30 PM

While I don't really trust NASA I don't trust those religious doom sayers either. In fact I trust them less.




i agree with that, it is hard to know what the actual truth is anymore...

metalwing's photo
Sat 07/23/11 08:09 AM


I found those links gibberish

If one could explain the effect on a gravity funnel

I would be happy to add something



Is that like a beer bong?


Portions of the galaxy are like huge breweries that make beer! A trillion pints of Vodka anyone?

http://researchnews.osu.edu/archive/beercld.htm

no photo
Sat 07/23/11 09:45 AM
Edited by Jeanniebean on Sat 07/23/11 09:46 AM
I saw a youtube video yesterday about an asteroid that barely missed the earth not too long ago...(2009) It came between the earth and the moon. That is really close.

Did we get a warning? Nope.

So don't expect to get any warnings for anything else.

Large asteroid barely misses earth: 2009:

Asteroid 2009 DD45 missed Earth by only twice the distance of Earth-orbiting satellites. Could early detection save the planet from future asteroids?

http://www.findingdulcinea.com/news/science/2009/march/Large-Asteroid-Barely-Misses-Earth-Can-We-Prevent-Future-Collisions.html

Sept 2010:


http://www.digitaljournal.com/article/297225

An asteroid has barely missed Earth, and there is another one coming within 49,088 miles of our planet. It is a significant discovery to find two objects pass so close to Earth in one day.
An asteroid barely missed the Earth at 5:51 a.m. on Wednesday. Space watches say another asteroid is going to make a close encounter with Earth at 5:12 p.m. on Wednesday. According to NASA, this is a good reason why we should closely monitor the space around the planet.
Donald Yeomans, manager of NASA’s Near Earth Program, says that the objects do not pose a threat to Earth and they are not visible to the naked eye.


Read more:http://www.digitaljournal.com/article/297225#ixzz1Swo52Ymy


Even more recent: last month: 06/27/2011

http://www.washingtonpost.com/blogs/capital-weather-gang/post/asteroid-barely-misses-contact-with-earth/2011/06/27/AGseRTnH_blog.html

A newly discovered asteroid estimated about 30 feet in size and named “2011 MD” will pass by the Earth over the south Atlantic around 1 p.m. EDT today missing a direct hit by only 7500 miles. In the vastness of space of the inner the solar system, this is considered a really close call – less than about 3% of the distance between Earth and the moon and visible even with a small telescope. An even closer encounter occurred earlier this year when another small asteroid missed the earth by just 3400 miles.

Asteroids coming this close cross through the zone of geosynchronous satellites (such as the GOES series), but the chances of a collision are extremely small, though not zero.


no photo
Thu 07/28/11 04:54 PM


So metalwing do you believe that comets are nothing more than "dirty snowballs" with no electrical charges or interactions with anything else?"

huh


Comets do not have a magnetic field, nor do they have any process that creates a magnetic field.

If you will read a little farther back in time you will see that the science to disprove some of his theories has already occurred, such as his "solar wind, lack of dark matter, red shift", theories.

The fact that he taught at a university means nothing. Grad students commonly teach. We was unable to get his Phd.

Spectral analysis of comets indicate they are dirty snowballs.

From NASA
http://deepimpact.umd.edu/flash/di_science.html


New discoveries about Comet's and the electric universe....

The Electric Model:
Also, the earth does not orbit the sun... the sun moves, and the planets follow it in a spiral.


http://coupmedia.org/astro-physics/earth-does-not-orbit-the-sun-2707

metalwing's photo
Thu 07/28/11 05:46 PM



So metalwing do you believe that comets are nothing more than "dirty snowballs" with no electrical charges or interactions with anything else?"

huh


Comets do not have a magnetic field, nor do they have any process that creates a magnetic field.

If you will read a little farther back in time you will see that the science to disprove some of his theories has already occurred, such as his "solar wind, lack of dark matter, red shift", theories.

The fact that he taught at a university means nothing. Grad students commonly teach. We was unable to get his Phd.

Spectral analysis of comets indicate they are dirty snowballs.

From NASA
http://deepimpact.umd.edu/flash/di_science.html


New discoveries about Comet's and the electric universe....

The Electric Model:
Also, the earth does not orbit the sun... the sun moves, and the planets follow it in a spiral.


http://coupmedia.org/astro-physics/earth-does-not-orbit-the-sun-2707



Actually, all motion is relative. None of the "new Discoveries" mentioned above are new.

http://www.youtube.com/watch?v=buqtdpuZxvk

mightymoe's photo
Thu 07/28/11 07:31 PM
Edited by mightymoe on Thu 07/28/11 07:36 PM
NASA warns anomalies Stereo nodes that are taking place by the approach of ELENIN as well as viewing the coming days 1-15 August.

The SECCHI team requests to roll the Behind spacecraft by 135 degrees for two hours per day each day between Aug 1 (or late on Sep 31) and Aug 12 to observe comet Elenin as it flies within 0.05 AU of the spacecraft. Observations of the comet at a wide variety of phase angles will provide information about composition. There’s also a possibility that the in situ instruments on Behind will see the ion tail. The requested two hours per day will include the roll and settle times, with the roll starting on an even hour boundary, and then back to nominal roll and settled on the next even hour boundary…Continue reading: stereo-ssc.nascom.nasa.gov/minutes/weekly_20110607.txt

Probably they will cut the STERO satellite signal during August 22 and 23, 2011

To read the whole story, go to the source and author: Starviewer (Article published in language Spanish ) or read the translated version in language: English

The latest image available from the “cluster” Elenin. Surprised that NASA does not publish a single photograph of the Comet

http://www.youtube.com/watch?v=kpvPQrtgE1Y&feature=player_embedded

metalwing's photo
Mon 08/29/11 04:53 PM
Comet Elenin Won't Kill Us, Says NASA

Analysis by Ian O'Neill
Wed Aug 17, 2011 01:21 PM ET

Elenin

You may have seen the scary headlines. You may have read those alarming emails. But do you believe it? Just in case, NASA has issued the facts about a comet called Elenin. And no, these aren't the "facts" doomsayers will tell you.

In short, the 3-5 kilometer-wide comet can't hurt us. Really, it can't. It's too small and its closest approach to Earth will bring it 90 times the Earth-moon distance. 90 times the Earth-moon distance. That's a whopping 35 million kilometers (22 million miles) away. Could there be any conceivable impact to our everyday lives by this dirty snowball?
Fireball
WATCH VIDEOS: From meteors to asteroids, browse the Discovery News playlist and discover what it takes for a piece of space rock to turn potentially hazardous for life on Earth.

ANALYSIS: Will Earthbound Comet Elenin Fulfill 2012 Prophecy?

I seriously doubt this will calm the overactive imaginations of some conspiracy theorists, but NASA has felt the need to respond to the crazy theories being flung around and to address some of the more rational questions. (NASA did a similar thing in 2009 when responding to the 2012 doomsday nonsense, issuing a statement that there was no known astronomical reason for the end of the world on Dec. 21, 2012.)

Helpfully, two NASA scientists have been hard at work over the past few months responding to questions from the public. Yesterday, NASA compiled some of the most popular questions, creating an "everything you ever needed to know about Comet Elenin" Q&A.

The Elenin answers were provided by Don Yeomans of NASA's Near-Earth Object Program Office at NASA's Jet Propulsion Laboratory in Pasadena, Calif., and David Morrison of the NASA Astrobiology Institute at the NASA Ames Research Center in Moffett Field, Calif. Morrison is no stranger to responding to these kinds of questions, having become NASA's in-house 2012 doomsday debunker.

OPINION: Nibiru - Armageddon Planet or Astronomical Baloney? (by David Morrison)

It seems that doomsday theorists and astrologers alike believe that any celestial object, no matter how small or distant, can have some magical influence on Earth. Fortunately, this isn't true.

"So you've got a modest-sized icy dirtball that is getting no closer than 35 million kilometers," said Yeomans. "It will have an immeasurably minuscule influence on our planet. By comparison, my subcompact automobile exerts a greater influence on the ocean's tides than comet Elenin ever will."

Interestingly, the "marauding brown dwarf doomsday theory" has cropped up again, and in one question it's been tied in with the appearance of comet Elenin. If Elenin is actually a brown dwarf, surely that will have a huge gravitational influence on the solar system, right?

INTERVIEW: Where Are You Hiding Planet X, Dr. Brown?

"A comet is nothing like a brown dwarf. You are correct that the way astronomers measure the mass of one object is by its gravitational effect on another, but comets are far too small to have a measurable influence on anything," Morrison replied.

But why isn't NASA talking about Elenin more? "Comet Elenin hasn't received much press precisely because it is small and faint," said the NASA press release. "Several new comets are discovered each year, and you don't normally hear about them either."

"The truth is that Elenin has received much more attention than it deserves due to a variety of Internet postings that are untrue."

So there you have it, every reason in the world why Comet Elenin is a benign threat to our planet.

READ MORE: The entire NASA Elenin Q&A

In related news, the Daily Mail has published an overly excited article about the European Space Agency's upcoming mission to bring Armageddon to an asteroid. (And yes, they mention Bruce Willis more than once. Sigh.) However, it is hard to see where the "news" is.

The article discusses the proposed ESA mission "Don Quijote" -- intended to deflect a small asteroid with a high-speed impactor (although, according to the article, ESA wants to "blow up" said asteroid. Needless to say, the Daily Mail embellished that bit.) But, according to the ESA mission site, which hasn't been updated since 2009, Don Quijote appears to be in the preliminary phase.

Asteroid deflection will be a very important tool in the Earth's cosmic protection armory, but until there's any actual news about an asteroid deflection mission becoming a reality, Discovery News will wait... until there's news.

SLIDE SHOW: Top 10 Ways to Deflect and Asteroid

no photo
Mon 08/29/11 07:54 PM
I'm not expecting Comet Elenin to hurt us, but we may pass through some of its tail.

I'm not convinced that a comet is simply a "dirty snowball."


metalwing's photo
Tue 08/30/11 06:33 AM

I'm not expecting Comet Elenin to hurt us, but we may pass through some of its tail.

I'm not convinced that a comet is simply a "dirty snowball."




Why not?

no photo
Tue 08/30/11 08:35 AM
Edited by Jeanniebean on Tue 08/30/11 08:52 AM


I'm not expecting Comet Elenin to hurt us, but we may pass through some of its tail.

I'm not convinced that a comet is simply a "dirty snowball."




Why not?


Personally, the statement simply rings untrue.



But you might be interested in cubanite and a study of dust grains brought back to Earth from comet Wild-2 as part of the Stardust mission2.

“The mineral we found—cubanite—is very rare in sample collections from space,” Berger says. “It comes in two forms—the one we found only exists below 210 degrees Celsius (99 degrees Fahrenheit). This is exciting because it tells us those grains have not seen temperatures higher than that. ”

“What we found makes us look at comets in a different way,” Lauretta says. “We think they should be viewed as individual entities with their own unique geologic history.”

Also:

Small and unevenly shaped, comets are often described as “dirty snowballs.” But, based upon analysis of comet particles captured and returned to Earth by NASA’s Stardust mission, scientists now believe that comets may be much more than simple chunks of water ice, frozen carbon dioxide and dust. Stardust samples contained some high- and low-temperature minerals, suggesting that comets may form in different locations and under a range of conditions



metalwing's photo
Tue 08/30/11 09:01 AM



I'm not expecting Comet Elenin to hurt us, but we may pass through some of its tail.

I'm not convinced that a comet is simply a "dirty snowball."




Why not?


Personally, the statement simply rings untrue.



But you might be interested in cubanite and a study of dust grains brought back to Earth from comet Wild-2 as part of the Stardust mission2.

“The mineral we found—cubanite—is very rare in sample collections from space,” Berger says. “It comes in two forms—the one we found only exists below 210 degrees Celsius (99 degrees Fahrenheit). This is exciting because it tells us those grains have not seen temperatures higher than that. ”

“What we found makes us look at comets in a different way,” Lauretta says. “We think they should be viewed as individual entities with their own unique geologic history.”

Also:

Small and unevenly shaped, comets are often described as “dirty snowballs.” But, based upon analysis of comet particles captured and returned to Earth by NASA’s Stardust mission, scientists now believe that comets may be much more than simple chunks of water ice, frozen carbon dioxide and dust. Stardust samples contained some high- and low-temperature minerals, suggesting that comets may form in different locations and under a range of conditions





Actually, I'm the one who pointed out the comet return programs in the other comet thread. You misunderstand the meaning of the article. When they say it's not "just a dirty snowball" they are referring to it being a dirty snowball that somehow got partially melted (BTW they listed the temperatures incorrectly) which caused some minerals to dissolve into the water. They then studied the minerals to see what was in the "dirty snowball".

What they are saying is that comets are dirty snowballs that may sometimes get into a condition to cause some of the ice to melt.

no photo
Tue 08/30/11 12:02 PM
Edited by Jeanniebean on Tue 08/30/11 12:04 PM




I'm not expecting Comet Elenin to hurt us, but we may pass through some of its tail.

I'm not convinced that a comet is simply a "dirty snowball."




Why not?


Personally, the statement simply rings untrue.



But you might be interested in cubanite and a study of dust grains brought back to Earth from comet Wild-2 as part of the Stardust mission2.

“The mineral we found—cubanite—is very rare in sample collections from space,” Berger says. “It comes in two forms—the one we found only exists below 210 degrees Celsius (99 degrees Fahrenheit). This is exciting because it tells us those grains have not seen temperatures higher than that. ”

“What we found makes us look at comets in a different way,” Lauretta says. “We think they should be viewed as individual entities with their own unique geologic history.”

Also:

Small and unevenly shaped, comets are often described as “dirty snowballs.” But, based upon analysis of comet particles captured and returned to Earth by NASA’s Stardust mission, scientists now believe that comets may be much more than simple chunks of water ice, frozen carbon dioxide and dust. Stardust samples contained some high- and low-temperature minerals, suggesting that comets may form in different locations and under a range of conditions





Actually, I'm the one who pointed out the comet return programs in the other comet thread. You misunderstand the meaning of the article. When they say it's not "just a dirty snowball" they are referring to it being a dirty snowball that somehow got partially melted (BTW they listed the temperatures incorrectly) which caused some minerals to dissolve into the water. They then studied the minerals to see what was in the "dirty snowball".

What they are saying is that comets are dirty snowballs that may sometimes get into a condition to cause some of the ice to melt.


I don't think that is what they are saying. This is what they said:

“What we found makes us look at comets in a different way,” Lauretta says. “We think they should be viewed as individual entities with their own unique geologic history.”


Cubanite only exists below 210 degrees Celsius (99 degrees Fahrenheit).

Therefore its not just ice that melted.


metalwing's photo
Tue 08/30/11 02:27 PM





I'm not expecting Comet Elenin to hurt us, but we may pass through some of its tail.

I'm not convinced that a comet is simply a "dirty snowball."




Why not?


Personally, the statement simply rings untrue.



But you might be interested in cubanite and a study of dust grains brought back to Earth from comet Wild-2 as part of the Stardust mission2.

“The mineral we found—cubanite—is very rare in sample collections from space,” Berger says. “It comes in two forms—the one we found only exists below 210 degrees Celsius (99 degrees Fahrenheit). This is exciting because it tells us those grains have not seen temperatures higher than that. ”

“What we found makes us look at comets in a different way,” Lauretta says. “We think they should be viewed as individual entities with their own unique geologic history.”

Also:

Small and unevenly shaped, comets are often described as “dirty snowballs.” But, based upon analysis of comet particles captured and returned to Earth by NASA’s Stardust mission, scientists now believe that comets may be much more than simple chunks of water ice, frozen carbon dioxide and dust. Stardust samples contained some high- and low-temperature minerals, suggesting that comets may form in different locations and under a range of conditions





Actually, I'm the one who pointed out the comet return programs in the other comet thread. You misunderstand the meaning of the article. When they say it's not "just a dirty snowball" they are referring to it being a dirty snowball that somehow got partially melted (BTW they listed the temperatures incorrectly) which caused some minerals to dissolve into the water. They then studied the minerals to see what was in the "dirty snowball".

What they are saying is that comets are dirty snowballs that may sometimes get into a condition to cause some of the ice to melt.


I don't think that is what they are saying. This is what they said:

“What we found makes us look at comets in a different way,” Lauretta says. “We think they should be viewed as individual entities with their own unique geologic history.”


Cubanite only exists below 210 degrees Celsius (99 degrees Fahrenheit).

Therefore its not just ice that melted.




Restating it doesn't change the meaning. The temperatures are incorrect. Yes, some dirty snowballs may partially melt. That's all they are saying. Melt water can dissolve minerals.

It doesn't change the fact that they are dirty snowballs. The fact that a "dirty snowball" can have a unique history does not change the composition of the original object. If it partially melts, it just changes the composition of the minerals in the dirty snowball.