Watch Your Mouth!

Apr 3, 2013 9:05am

Katie?s Take

Taking a seat in the dentist chair goes far beyond maintaining a healthy smile. Our mouths are the gateways to our bodies and can tell us more about our health than we may think. A dentist can detect nearly 120 medical conditions in their early stages.? Dr. Jonathan Levine, an oral health expert and aesthetic dentist practicing in New York City, talked to Katie Couric about how good oral health can affect our overall health.

Not caring for our teeth can lead to periodontal (gum) disease which has become all too common in our country, with one in every two Americans suffering from some form of gum disease. The inflammation caused by gum disease can be linked to cardiovascular disease, diabetes, pancreatic cancer and preterm birth. Research also suggests that oral bacteria may be linked to heart disease, arterial blockages and stroke.

Unfortunately, 31 million Americans do not have access to dental health care. This is what Dr. Levine calls ?the unspoken epidemic? but suggests fighting it with prevention and education. By teaching children at a young age the importance of good dental care, they can fight long-term problems later in life. Visiting your dentist one to two times a year is vital to maintaining good oral hygiene. ?While a dentist visit can provide clues about your overall well-being, it is important to connect your dentist and your general physician to be sure that there are no gaps in your healthcare.
Creating healthy habits can help reduce your risk of gum disease. Focus on fighting plaque by flossing daily and staying away from sugar and foods that are high in protein and acidity. The average American spends around forty five seconds brushing their teeth, far shorter than the recommended two minutes. As Dr. Levine says, ?Don?t rush the brush? as the consequences go far beyond your smile.

Source: http://abcnews.go.com/blogs/health/2013/04/03/watch-your-mouth/

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'Miracle foods': Can they decrease the risk of cancer?

Apr. 1, 2013 ? Cancer is a disease that invokes fear, so it is not surprising that the public is eager to identify ways to decrease the risk. The media often features information on "Miracle Foods" and publicizes whether these foods can actually decrease the risk of cancer.

"Reality Check: There is No Such Thing as a Miracle Food," published in Volume 65, Issue 2, 2013 of Nutrition and Cancer: An International Journal, is a commentary written by the University of Minnesota's Maki Inoue-Choi, Sarah Oppeneer, and Kim Robien that calls on both researchers as well as media sources to consider the validity of multiple studies as opposed to singular studies before assuming that media information is factual.

"Nutritional scientists and epidemiologists should be cognizant of the public health messages that are taken away from their individual studies and not sensationalize the findings or contribute to the media frenzy around a single study," the authors believe.

The authors mention two separate studies that theorize a decreased risk of ovarian cancer due to flavonoids in red onions and omega-3 in sea bass. Both of these studies were reported as fact on a popular television talk show. The authors assert that with further research, three other studies would have been found that can disprove the findings reported as true.

"The public needs more information about the effect of diet as a whole on cancer risk, as well as the importance of achieving and maintaining an ideal body weight, regular physical activity, and avoiding a sedentary lifestyle," the authors wrote. ?

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The above story is reprinted from materials provided by Taylor & Francis, via AlphaGalileo.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.

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Journal Reference:

1. Maki Inoue-Choi, Sarah J. Oppeneer, Kim Robien. Reality Check: There is No Such Thing as a Miracle Food. Nutrition and Cancer, 2013; 65 (2): 165 DOI: 10.1080/01635581.2013.748921

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/nutrition/~3/M8ou2yj1lio/130401090605.htm

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Budget Crisis Threatens Severe Military Readiness Impact | Albany ...

U.S. Marine Corps reconnaissance men engage targets with an M240B medium machine gun near Camp Schwab during training on Camp Schwab, Okinawa, Japan, March 25, 2013. The Marines adjusted their point of aim based on the the impacts of their last burst of fire to put rounds on target. The Marines are assigned to the 3rd Reconnnaissance Battalion. U.S. Marine Corps photo by Cpl. Mark W. Stroud

By Albany Tribune -- (March 31, 2013)

By Donna Miles

The Pentagon comptroller painted a sobering picture of the Defense Department?s fiscal landscape today, telling members of the financial community that unless sequestration is de-triggered soon, military readiness will suffer deeply.

The continuing resolution that President Barack Obama signed into law this week provides slight relief in authorizing the Defense Department to shift funds between certain accounts, Undersecretary of Defense Robert F. Hale told the American Society of Comptrollers and the Association of Government Accountants in a webcast presentation.

The resolution, which provides DOD funding through September, allows the department to move more than $10 billion of its fiscal 2013 appropriation to operations and maintenance accounts. It also loosened restrictions on new weapons programs, weapons purchases and military construction projects.

?But it did not solve all our problems? in funding department operations through the rest of the fiscal year, particularly in light of sequestration, Hale said.

The mandatory budget cuts that began taking effect March 1 also are having an impact across the military, he said, with deeper ones to come next month.

Anticipating fiscal challenges through the rest of fiscal 2013, which ends Sept. 30, the department took near-term actions to limit the impact, Hale said. It imposed civilian hiring freezes in all but mission-critical jobs, laid off temporary and term employees, cut back sharply on travel and conferences and ?essentially stopped all facilities maintenance at bases,? he said.

?We are in triage mode in terms of getting through this year,? Hale added. ?But these near-term actions won?t solve the problems of sequestration.?

Throughout the budget planning process, DOD has taken pains to support wartime operations, he said. ?You can?t leave troops in Afghanistan without the funds needed to protect themselves and wind down the war responsibility,? Hale said.

But with wartime costs far higher than anticipated two years ago, Hale said, the only way to offset them has been through deeper cuts in the base part of the budget that pays for other day-to-day activities.

?When you add up all these effects, instead of an 8 percent cut, you are talking 15 to 20 percent for the remaining part of fiscal year 2013,? he said. The percentage of these cuts varies by service, with the Army taking the deepest ones, he added.

Sequestration will begin cutting even more deeply next month, with Hale projecting ?a real crisis? in the operations and maintenance budget, with the potential for ?severely adverse effects on our military readiness.?

?I think you will, unfortunately, see a number of Air Force squadrons stand down training entirely for their pilots,? he said, noting that restoring lapsed flying certifications will take time and money. ?You will see significant training cutbacks in the Army and other services. You will see maintenance cutbacks as we stop maintaining our weapons systems.?

These actions would directly affect readiness ? a real concern, Hale said, particularly if military forces are called on to confront another contingency later this year. ?We won?t have forces that are adequately ready and will either have to make the choice to deploy with less-trained forces or take extra time to get them ready,? he said.

This year?s fiscal crisis will spill into fiscal 2014, which DOD will start in ?a state of damaged readiness,? Hale said.

In addition to wartime operations, DOD will continue to prioritize other top-priority missions, including wounded warrior programs and nuclear deterrence efforts, to ensure they are fully funded, he said. Meanwhile, planners will strive to limit cuts that affect forward-deployed forces, particularly in South Korea and other high-threat areas, and the availability of intelligence, surveillance and reconnaissance assets in critical theaters.

The budget also will protect family programs to the greatest extent possible, although Hale acknowledged that it won?t be across the board. The DOD Education Activity, for example, won?t be exempt from civilian furloughs, but DOD will limit the number of furlough days to ensure students meet the minimum required school days to qualify for a credible year, he said.

Departmentwide civilian furloughs, as unsavory as they may be, are essential in dealing with the formidable fiscal 2013 budget challenges, Hale said. Without them, DOD would have to take even deeper training and maintenance cuts, he explained.

Furloughs will be instituted consistently and fairly across the department, Hale said, with ?some very limited exceptions? for civilians serving in the combat zone or in jobs that directly impact life and property.

Hale expressed hope that Congress and the president can reach a deal that ends sequestration and lifts at least part of the challenge of working through ?very difficult times.?

Source: American Forces Press Service

Source: http://www.albanytribune.com/31032013-budget-crisis-threatens-severe-military-readiness-impact/

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Order your HTC One online with T-Mobile and get a free HTC car kit

T-Mobile adds an official HTC One car kit to the $100 trade in for online HTC One orders

While you can't officially pre-order the HTC One on T-Mobile just yet, T-Mobile has updated their sign-up page and is now offering a free HTC car kit to folks who order online. This is in addition to the $100 Visa card you get from the trade in offer from HTC. 

What we don't know yet is when to expect the HTC One at T-Mobile. Registering for more information is fine and dandy, and shifting the Visa card program around to make sure everyone can qualify is a good thing, but people want to know when they can get their hands on the HTC One on T-Mobile's new LTE network. The new $99 down payment plan won't attract anyone if you don't have what they want on the shelf.

In any case, if you're even slightly interested be sure to sign up for more information to cement your spot in the trade-in program, and consider ordering online for the free car kit. Hit the link below!

Source: T-Mobile. Thanks, Jasmine!

Source: http://feedproxy.google.com/~r/androidcentral/~3/FLeFmVtRnBI/story01.htm

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The Final Four is set after blowouts, surprises

Louisville head coach Rick Pitino directs his team during the second half of the Midwest Regional final against Duke in the NCAA college basketball tournament, Sunday, March 31, 2013, in Indianapolis. Louisville won 85-63 to advance to the Final Four. (AP Photo/Michael Conroy)

Louisville head coach Rick Pitino directs his team during the second half of the Midwest Regional final against Duke in the NCAA college basketball tournament, Sunday, March 31, 2013, in Indianapolis. Louisville won 85-63 to advance to the Final Four. (AP Photo/Michael Conroy)

Michigan celebrates after a regional final game against Florida in the NCAA college basketball tournament, Sunday, March 31, 2013, in Arlington, Texas. Michigan won 79-59 to advance to the Final Four. (AP Photo/Tony Gutierrez)

Syracuse players and coaches celebrate for photographers after their 55-39 win over Marquette in the East Regional final in the NCAA men's college basketball tournament, Saturday, March 30, 2013, in Washington. (AP Photo/Pablo Martinez Monsivais)

Wichita State's Carl Hall celebrates after his team defeated Ohio State 70-66 in the West Regional final in the NCAA men's college basketball tournament, Saturday, March 30, 2013, in Los Angeles. (AP Photo/Mark J. Terrill)

Michigan celebrates with the trophy after a regional final game against Florida in the NCAA college basketball tournament, Sunday, March 31, 2013, in Arlington, Texas. Michigan won 79-59 to advance to the Final Four. (AP Photo/David J. Phillip)

ATLANTA (AP) ? An inspired Louisville squad vs. the surprising Shockers.

A new group of Fab Wolverines vs. the stingiest zone defense in college basketball.

After a weekend of blowouts and another upset, the Final Four is set.

Top overall seed Louisville will face Wichita State at the Georgia Dome next Saturday, while Michigan takes on Syracuse in the other national semifinal. The winners advance to the April 8 championship.

On Sunday, the Cardinals drew inspiration from a gruesome injury to guard Kevin Ware and cruised past Duke 85-63 in the Midwest Regional. Michigan led from the opening tip, routing Florida 79-59 in the South.

A day earlier, Syracuse shut down Marquette 55-39 to win the East. Wichita State punched its Final Four ticket with a 70-66 upset of Ohio State out West.

In the final year of the Big East before it splits into two new conferences, Louisville and Syracuse provided a fitting send-off to a league that quickly became a basketball powerhouse after it was founded in 1979.

Before it goes, this version of the Big East has a shot at one more national title.

With two teams, no less.

The Cardinals ? who, like Syracuse, are moving to the Atlantic Coast Conference ? were the only No. 1 seed to make it to the Final Four. And, boy, it's been an impressive run.

Louisville (33-5) has won its four NCAA games by an average margin of nearly 22 points, capped by a second-half blowout of Duke after the Cardinals shook off the incredible shock of Ware's injury with about 6? minutes to go before halftime.

"We won this for him," coach Rick Pitino said.

The sophomore snapped his lower right leg after coming down awkwardly while defending a 3-point shot. The injury occurred right in front of the Louisville bench, where the players gasped and turned away quickly at the sight of Ware's dangling leg, which was broken in two places.

Russ Smith collapsed onto the floor, along with several players, and was crying as doctors attended to Ware. While Ware was loaded onto a stretcher, the Cardinals gathered at midcourt until Pitino called them over, saying the injured player wanted to talk to them before he left.

The sophomore, who played his high school ball in suburban Atlanta, urged his teammates to complete the trip to the Georgia Dome. Pitino wiped his eyes as Ware was wheeled out, as did several Louisville players.

"All he kept saying ? and remember, the bone is 6 inches out of his leg ? all he's yelling is, 'Win the game! Win the game!'" Pitino said. "I've never seen that in my life. We're all distraught and all he's saying is, 'Win the game.' Kevin is a special young man."

This is a special team. Smith scored 23 points. Gorgui Dieng had 14 points, 11 rebounds and four blocks.

The Cardinals simply refused to lose, breaking open a game that was tied at 42. They dove on the floor for loose balls. They pounded the boards ferociously. They contested every shot and swarmed around the Blue Devils like they had an extra player on the court.

In a sense, they did. During every timeout, Pitino reminded the players of their hospitalized teammate.

"This is a gritty bunch," the coach said. "From the beginning of the year to now, they've not had a bad game. I'm really proud of these guys."

While the Cardinals are the clear favorite heading to their second straight Final Four, Wichita State was the most improbable team to advance.

The ninth-seeded Shockers lived up to their nickname in the West, knocking off top-seeded Gonzaga in the second round and No. 2 seed Ohio State in the regional final Saturday night.

Wichita State (30-8) built a 20-point lead on the Buckeyes, then managed to hang on through a nerve-racking final five minutes to pull off the latest upset in a tournament filled with them.

The Shockers will need an even bigger stunner to knock off Louisville, the one team in a wide-open tournament that has looked unbeatable.

Then again, that other team from Kansas has shown no fear so far.

"It feels very good," said Cleanthony Early, a junior forward who, like most guys on this team, was passed over by higher-profile programs, "but we understand the fact that we've got to stay hungry and humble, because we've got two more games left to really be excited about."

Old-timers might remember Louisville and Wichita State as former conference rivals. The Cardinals were a member of the Missouri Valley Conference in the 1960s and '70s, which meant annual games against the Shockers.

Louisville holds a 19-5 edge in the series, but the teams haven't played since 1976.

Michigan (30-7) is headed back to the Final Four for the first time since the Fab Five era of the early 1990s, when the Wolverines lost in back-to-back national title games.

This team has much the same feel, led by sophomore Trey Burke, the Big Ten player of the year, and three freshmen starters. They were downright fabulous against Florida on Sunday, never seriously threatened after scoring the first 13 points.

"A lot of guys said we were really young and that we couldn't get here," said Burke, who scored 15 points against Florida but really came through in an improbable comeback against top-seeded Kansas in the regional semifinals. "We're here now and we still have unfinished business."

One of the freshmen, Nik Stauskas, hit all six of his 3-pointers and scored 22 points to lead the fourth-seeded Wolverines past the third-seeded Gators. Another of the youngsters, 6-foot-10 Mitch McGary, chipped in with 11 points and nine rebounds.

Florida became the first team to make it to three straight regional finals without winning any of them, according to STATS.

The Wolverines will have their work cut out against Syracuse (30-9), a team that has totally stuffed its NCAA opponents with a stifling zone defense. The fourth-seeded Orange are headed to their first Final Four since winning it all in 2003 largely because they have allowed fewer than 46 points a game in the tournament.

Syracuse leads the series against Michigan 8-5. Their last meeting was Nov. 26, 2010, when the Orange prevailed 53-50 in the Legends Classic at Atlantic City, N.J.

The schools have never met in the NCAA tournament.

Syracuse has been like an octopus when it settles in around the its own lane ? shutting off passing routes, preventing anyone from penetrating, yet still managing to defend the 3-point line with quickness and long arms. Montana, California, top-seeded Indiana and Marquette combined to make just under 29 percent from the field (61 of 211) and a paltry 15.4 percent (14 of 91) outside the arc.

"We were as active these two games here in Washington as we've ever been," Syracuse coach Jim Boeheim said after Saturday's win over league rival Marquette, which is headed to a new version of the Big East next season. "I just really can't say enough about how good these guys played on the defensive end of the court."

___

Follow Paul Newberry on Twitter at www.twitter.com/pnewberry1963

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/347875155d53465d95cec892aeb06419/Article_2013-03-31-BKC-Final-Four-Lookahead/id-c33e0dd910e644a08d631b23d36a457d

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BrowserCheck Business Edition

Large companies have IT personnel responsible for tracking software users have on their computers. For the small business, the task generally falls to end-users and one IT person already burdened with a long to-do list. If the user doesn't keep up with updates and IT doesn't notice, that is a security risk. Considering the amount of Web-based threats out there, the free BrowserCheck scanner from Qualys is a quick way to ensure Web browsers and installed plug-ins are up-to-date.

Cyber-criminals have a choice between buying?or creating?attacks targeting either zero-day vulnerabilities or older security flaws. The latter type is much cheaper and readily available. ?Recent research has shown a significant number of computers run outdated software. Targeting older software can be pretty lucrative.

Qualys offers BrowserCheck (three stars) for personal use and BrowserCheck Business Edition, both for free. The personal version scans the end user's computer and generates a security profile right away. BrowserCheck Business Edition collects the scan results from each computer and displays them in a dashboard. At one glance, the administrator can tell what browsers and plug-ins have been installed. For Windows machines, administrators can also check the status of antivirus and firewall protection, as well as the latest security updates via Windows Update. Thanks to automated scanning, BrowserCheck Business Edition allows administrators to schedule future scans to monitor any changes to the computer's software security profile.

Getting Started
I signed up for a BrowserCheck Business Edition on the Qualys site with a non-webmail account, as Qualys does not accept addresses from Web providers such as Gmail, Yahoo and Hotmail. Businesses that don't have their own domain name and rely on these email services are blocked from using the scanner, unless they have some other email address to use instead.

The dashboard's tables and graphs offer a bird's-eye view of how many insecure browsers and plug-ins are in the organization. I viewed detailed scanning results for each system and historic reports, as well as platform statistics, such as the most frequently installed plug-ins and browsers.

BrowserCheck supports server and desktop Windows versions all the way from Windows 2000 to Windows 8, Mac OS X, and Linux. I ran a basic scan using the stock Web browser for Android but not for Firefox, and I didn't test on iOS. Qualys can also analyze alternative Web browsers, such as Maxthon, Seamonkey, and Rockmelt.

BrowserCheck, Administrator
The administrator controls all the BrowserCheck settings, such as scanning all the browsers installed on the computer at the same time, checking if the antivirus, firewall, and Windows Update are turned on (Windows only), looking for missing Microsoft Security Updates (also Windows only), and setting up an automated scheduler.

The administrator can send the customized Quick Scan URL listed under account settings to users. When someone clicks on this link, BrowserCheck scans the computer and saves the results back to the dashboard. The no-install scanner can check the plug-ins and version number for that browser only. This is a nice and simple way for the administrator to see all the results of all the machines in one place. Even so, the BrowserCheck plug-in is the better option.

Administrators can email the link to the plug-in and ask users to install it manually, or push out the MSI agent onto the computers via a software distribution tool or a script. If the organization didn't already have a software distribution tool that can push out files to user computers, administrators would have to rely on users, or take the time to make the rounds and install the plug-in themselves.

BrowserCheck can also be silent, where the user doesn't get to see the results of the scan as it is sent directly to the dashboard.

BrowserCheck, User-Side
All the end-user has to worry about is clicking on the Quick Scan link from IT to run the no-install scanner or downloading and installing the plug-in. The administrator determines what to scan and how often, making the process really simple for the user.

The plug-in-based scanner collects machine information, such as the operating system and the machine name, and associates the scan results with the machine name in the dashboard. The no-install scanner results are saved without any machine-identifying information. It's more helpful to tell the administrator which computer has the outdated Java plug-in, rather than just saying one computer needed to be updated.

If "silent mode" wasn't on, the user would see the results, a list of all installed plug-ins and their statuses. BrowserCheck has 13 different types of statuses, such as Obsolete and Retired. Outdated ones appear first, with red "Insecure Version" and blue "Fix It" buttons, followed by yellow "Update Available" buttons to indicate the updates were non-security related. Up-to-date plug-ins have green buttons, and all the ones BrowserCheck doesn't recognize have gray "Unknown" buttons.

Clicking on "Fix It" or "Update Available" buttons downloads the latest versions, but there's no way to automate getting the latest updates.

The scan results page look very similar to Mozilla's own plugin check.?With BrowserCheck, though, I could view the status of the plugins for each browser, along with system-specific data for Windows machines. I was concerned that nearly half of the plug-ins were flagged as "unknown" by BrowserCheck. While great for Windows OS and for common plug-ins, there is quite a lot the scanner doesn't recognize.

BrowserCheck for Security
For small businesses falling behind on patch management and regular software updates, BrowserCheck Business Edition is a great first step. There is nothing worse in security than not doing anything at all, so being able to see which computers have unsafe browsers or are missing security updates is a positive move.

If you just want a quick system that will tell you the state of your browsers and operating systems across your Windows network, BrowserCheck is sufficient. If you don't have a way to automatically deploy the MSI across all the computers, BrowserCheck will not be as effective as you depend on the users to install the plug-in. BrowserCheck Business Edition is the easiest way to ensure browsers and plug-ins within your organization are up-to-date with the latest security patches. If you need a little bit more, such as automated patching, investing in a more robust platform such as Panorama9?may be the way to go.

Source: http://feedproxy.google.com/~r/ziffdavis/pcmag/~3/7Fd-YK4CUfI/0,2817,2417226,00.asp

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Earth's Moon and Huge Asteroid Vesta Share Violent History

The same population of space rocks that battered Earth's moon during the early days of the solar system also slammed the huge asteroid Vesta, scientists say.

While the cosmic bombardment ? which occurred when Jupiter and Saturn shifted orbits ? has been known for a while, this is the first time scientists found evidence of it on Vesta, one of the biggest asteroids in the solar system.

NASA Apollo astronauts collected evidence of the bombardment on the moon during the lunar landing missions of the 1960s and 1970s. On Earth, erosion washed away most of the evidence of the violent chapter during the solar system's formation, researchers said.

"We wanted to study the evolution of the solar system. That was the main topic. So we tried to tackle that with a different scenario approach," said Simone Marchi, who is with the NASA Lunar Science Institute in Boulder, Colo., told SPACE.com. [Photos of Asteroid Vesta by NASA's Dawn Probe]

But it was a surprise to find that the moon and Vesta share the same bombardment history, NASA officials said in a statement. The discovery found that the same population of rocks that etched craters on the moon also affected the asteroid belt's history.

The research, led by Marchi, appears in Sunday's (March 24) issue of the journal Nature Geoscience.

Heavy cosmic artillery

At 319 miles (523 kilometers),?Vesta?is big enough for an amateur using binocularsto see it. It is so large that it is considered by some scientists as a "protoplanet," or large body that is similar in size to the genesis of the planets in the solar system today.When the solar system was still forming, some planets experienced a sort of dynamic instability as they orbited around the young sun. It was at this period of time that Jupiter and Saturn began moving in their orbits, according to the Nice model of planet formation.

The planets' movements ? which took place in only about a million years or so ? spurred what is now known as the Late Heavy Bombardment. This coincides with the time that life began to arise on Earth roughly 3.9 billion years ago. Icy and rocky bodies careened into the inner solar system, pummelling the moon, the Earth and other large objects.

Asteroids ejected into high-speed planetary-crossing paths, by their nature, should only have a lifetime of a few tens of millions of years before crashing.

Scientists said it was unlikely that they all were ejected at once. Rather, they were moved in periods stretching over hundreds of millions of years as the planets moved.

The planets' movements carried some asteroids into the inner solar system. The planets also altered the orbits of other asteroids that, after their orbits coincided with other bodies, eventually were kicked out into new orbits veering toward the sun.

Melting rock

Simulations showed that the greatest bombardment on Vesta happened between 4.1 billion and 4.55 billion years ago, as the mass of the young asteroid belt was at its highest. However, only 0.2 percent of impacts was high enough to melt the underlying rock.

That proportion jumps to about 11 percent in the next epoch of Vesta's history, about 3.5 billion to 4.1 billion years ago. This occurred when asteroids began "resonating" with each other and the planets in their orbits, sending some objects careening into the solar system and crashing into Vesta. While these encounters were more rare, they took place at a much higher speed.

A typical asteroid collision on Vesta today occurs at just 3 miles (5 km) a second, which is not fast enough to produce rock melting. On the moon, by contrast, a collision is nearly four times as fast: 11 miles (18 km) a second ? that's about 39,600 mph (63,730 km/h). This is because Vesta is orbiting in a swarm of rocks moving at similar speeds, while the moon is on its own and closer to the sun's gravity, researchers said.

A new interpretation of radiometric dating of Vesta's ancient asteroids, however, revealed small bodies smashing into the surface twice as quickly ? at velocities exceeding 6 miles (10 km) a second. Craters from these smaller meteorites on Vesta's surface vanished long ago due to gradual erosion from newer impacts.

Because argon is lost during impacts if the "target is heated for a long enough time beyond a threshold temperature," the paper stated, there's enough argon loss on ancient Vesta meteorites to show that they were moving much faster 4 billion years ago than previously believed.

Even later in asteroid's development, about 1 billion to 2 billion years ago, two nearly cataclysmic collisions changed the nature of the Vesta's interior. Scientists, who performed that research separately from Marchi and his colleagues, said this could explain why the asteroid has a thicker crust than could be explained previously.

A suite of NASA scientists were involved in the new research, including some from the Marshall Space Flight Center and the Jet Propulsion Laboratory. The agency-funded Lunar and Planetary Institute also participated, along with institutions in California, Tennessee, Arizona, Italy and Germany.

Follow Elizabeth Howell @howellspace, or SPACE.com @Spacedotcom. We're also on Facebookand Google+. Original article on SPACE.com.

Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Source: http://news.yahoo.com/earths-moon-huge-asteroid-vesta-share-violent-history-115032681.html

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