Jodi Arias' Friends Believe in Her Innocence

Accused murderer Jodi Arias believes she should be punished, but hopes she will not be sentenced to death, two of her closest friends told ABC News in an exclusive interview.

Ann Campbell and Donavan Bering have been a constant presence for Arias wth at least one of them sitting in the Phoenix, Ariz., courtroom along with Arias' family for almost every day of her murder trial. They befriended Arias after she first arrived in jail and believe in her innocence.

Arias admits killing her ex-boyfriend Travis Alexander and lying for nearly two years about it, but insists she killed Alexander in self defense. She could face the death penalty if convicted of murder.

Jodi Arias Testimony: Prosecution's Cross-Examination Watch Video

Jodi Arias Remains Calm Under Cross-Examination Watch Video

Jodi Arias Doesn't Remember Stabbing Ex-Boyfriend Watch Video

Nevertheless, she is aware of the seriousness of her lies and deceitful behavior.

The women told ABC News that they understand that Arias needs to be punished and Arias understands that too.

"She does know that, you know, she does need to pay for the crime," Campbell said. "But I don't want her to die, and I know that she has so much to give back."

Catching Up on the Trial? Check Out ABC News' Jodi Arias Trial Coverage

The lies that Arias admits she told to police and her family have been devastating to her, Bering said.

""She said to me, 'I wish I didn't have to have lied. That destroyed me,'" Donovan said earlier this week. "Because now when it's so important for her to be believed, she has that doubt. But as she told me on the phone yesterday, she goes, 'I have nothing to lose.' So all she can do is go out there and tell the truth."

During Arias' nine days on the stand she has described in detail the oral, anal and phone sex that she and Alexander allegedly engaged in, despite being Mormons and trying to practice chastity. She also spelled out in excruciating detail what she claimed was Alexander's growing demands for sex, loyalty and subservience along with an increasingly violent temper.

Besides her two friends, Arias' mother and sometimes her father have been sitting in the front row of the courtroom during the testimony. It's been humiliating, Bering said.

"She's horrified. There's not one ounce of her life that's not out there, that's not open to the public. She's ashamed," she said.

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Mood-sensing smartphone tells your shrink how you feel

PEOPLE with anxiety, depression or stress are often asked to record their mood changes throughout the day, helping psychologists fine-tune their treatment. But they often forget, recording only sparse information at best. Now an emotion-sensing smartphone app that automatically generates someone's "mood diary" could give psychologists all the data they need.

It's the brainchild of Matt Dobson and Duncan Barclay, founders of speech recognition firm EI Technologies, based in Saffron Walden, UK. Instead of relying on people writing diaries, the app, called Xpression, listens for telltale changes in a person's voice that indicate whether they are in one of five emotional states: calm, happy, sad, angry or anxious/frightened. It then lists a person's moods against the times they change, and automatically emails the list to their psychologist at the end of the day.

To work, the app has to be always on, listening out for the user's voice once every second, whether they are talking to family, friends, colleagues or even pets. It also listens in on phone calls. If the user is silent, the app does nothing. Crucially for the users' privacy, it doesn't record their words, instead seeking out telltale acoustic features – like pitch – that are indicative of emotional state.

This kind of emotion recognition via voice pattern already works well and is a "hot area" of research, says Stephen Cox, head of the speech processing lab at the University of East Anglia in Norwich, UK, who is scientific adviser for the firm.

Initially, Xpression will send 200-millisecond-long acoustic snapshots to a remote server where a machine-learning system will work out a person's emotional state before sending it back to the app for storage. Factors like voice loudness, intensity, changes in pitch and speaking pace allow the system to accurately estimate somebody's emotional state. "We extract acoustic features and let the machine-learning system work it out," says Cox. This ability will be built into the app itself eventually, says Dobson.

There's a strong need for this kind of technology, says Adrian Skinner, a clinical psychologist with the UK's National Health Service in Harrogate, North Yorkshire. "With conditions like depression, people tend to stop doing things like filling in mood diaries. If this app gives us more complete diaries it could help us better find the day-to-day triggers that raise or lower a patient's mood," he says.

The firm is a finalist in a UK government competition to identify the nation's top mobile tech company, to be judged on 26 February. An insurance company has already expressed an interest in using the app to ensure the workplace stress therapy it pays for is effective. Clinical trials are due to take place later this year.

This article appeared in print under the headline "We know how you really feel"

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New death from SARS-like virus in Saudi Arabia

GENEVA: Another person suffering from a SARS-like virus has died in Saudi Arabia, the World Health Organization said on Thursday, bringing the worldwide number of fatalities from the mystery illness to seven.

The Saudi health ministry informed the UN's health body that the patient had been hospitalised on January 29 and died on February 10, WHO said in a statement.

A laboratory had confirmed on February 18 that the person had died from the so-called novel coronavirus (NCoV), it added.

This brings the number of cases of the virus that have so far been reported to the WHO to 13. The virus was first detected in the middle of last year, with six previous fatalities -- three in Saudi Arabia, two in Jordan and one in Britain.

The news comes just days after a person suffering from the virus died in hospital in central England on Sunday.

That patient, who had a pre-existing health condition, was one of three people in the same family with the virus, which appeared to have been caught by one of the family members during a recent visit to the Middle East and Pakistan.

Even before the death in Britain, the WHO had on Saturday urged its member states to keep a close eye on any cases of severe acute respiratory infections, like pneumonia, and to "carefully review any unusual patterns."

Health authorities should test for NCoV in cases of unexplained pneumonia or other severe, "progressive or complicated respiratory illnesses not responding to treatment, particularly in persons travelling from or resident in areas of the world known to be affected," it said.

It also urged testing of any health workers showing such symptoms, and thorough investigations of clusters of cases, regardless of where they occur in the world.

WHO meanwhile did not recommend any travel or trade restriction in connection with the virus.

Coronaviruses cause most common colds but can also cause SARS (severe acute respiratory syndrome).

The new virus however is different from SARS, especially in that it causes rapid kidney failure.

A SARS epidemic killed more than 800 people when it swept out of China in 2003, sparking a major international health scare.

- AFP/fa

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How to manage OS X boot options with wireless keyboards

Apple offers several alternative boot environments for OS X that can help you troubleshoot problems you might be experiencing, which can be invoked by holding various key combinations at startup. Of these, Safe Mode is perhaps the most common; it offers a limited boot environment and can be started by holding the Shift key. In addition there is Single User mode (Command-S) for a command-line interface, Apple's hardware diagnostics tests (the "D" key), Target Disk mode (the "T" key), and holding the Option key will bring up the boot loader for choosing a startup disk.

These options can be invoked by holding their respective key combinations immediately when powering on the system; however, if you use Apple's Bluetooth keyboard, you could find that the system may ignore these inputs and boot normally. While you might assume that these options require a USB keyboard or other physical connection, this is not always the case. There are a couple of workarounds if you find yourself in this situation.

Apple's Bluetooth hardware controllers activate after all of the system's self-tests at boot complete and the EFI firmware loads successfully, which is indicated by the system playing the standard
Mac startup sound. It is at this point that the system will accept boot variables, either stored in the PRAM or those being sent via keyboard inputs. These are then passed to the OS X kernel to invoke the desired startup sequence.

If any inputs are being sent via the Bluetooth keyboard before the controllers are active, then they will not be recognized by the system. However, if these inputs are performed after the controllers are activated, then they will be properly read. Therefore, for Bluetooth keyboards, be sure to press the desired key sequences after you hear the boot chimes and not before.

While this approach for wireless keyboards should work, it may not in all situations. Should that happen, you can try various alternative approaches, such as using a spare USB keyboard to connect and send the desired boot argument to your system. Alternately, you can manually adjust the system's PRAM variables to invoke these boot arguments the next time the system starts up.

Setting the boot arguments PRAM variable requires administrative access, and is done from the Terminal using the following command:

sudo nvram boot-args="VALUE"

In this command, the VALUE component is one or more of the following flags separated by spaces, that will tell the kernel to load in the corresponding way:

-s -- Single User Mode
-v -- Verbose Mode
-x -- Safe Mode
rd=DISKID -- force booting to a specific partition.

In the "rd=DISKID" option, DISKID is a BSD device ID such as "disk0s1" for the first partition or "slice" of the disk0 device. The DISKID value can also be "*hd:NUMBER" where NUMBER is the partition of the drive to use as the boot volume. For example, if you would like to load the system in Single User mode and boot from the first partition on the second hard drive in the system, then you would issue the following version of the command:

sudo nvram boot-args="-s rd=disk1s2"

The Target Disk mode and startup disk can be set in the system preferences, which may be preferable to using Terminal commands.

(Credit:
Screenshot by Topher Kessler/CNET)

The "boot-args" variable can be used for setting the above modes. but in addition if you need to load the system into Target Disk mode, you can do so by setting the "target-mode" PRAM variable in the following way (this will be enabled only once for the next time the system is started):

sudo nvram target-mode=1

The option for rebooting the system into Target Disk mode or choosing an alternative boot partition can be done in the Startup Disk system preferences pane, so using the Terminal for these options is not a requirement for those with wireless keyboards. If you want to boot to Safe, Verbose, or Single User modes and cannot do so at startup with a key command, you will need to use one of these Terminal command options.

A final word of note when adjusting PRAM values is how to revert any changes you make. By default the PRAM variables mentioned here are empty, so you can delete them by running the following commands:

sudo nvram -d boot-args

sudo nvram -d target-mode

A final approach to clearing these is to simply reset the system's PRAM by rebooting and holding down the Option-Command-P-R keys at startup. Again for a Bluetooth keyboard, this needs to be done after you hear the boot chimes, or using an alternative keyboard.

---

Questions? Comments? Have a fix? Post them below or !
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Pictures: Artifacts Provide Clues to Life in Early Christchurch

Photograph courtesy Jaden Harris, Underground Overground Archaeology
 
 
 

A tiny container for Holloway's ointment, less than two inches (five centimeters) wide, came from what was probably a brick-lined basement on Madras Street under a multistory modern commercial building.

British patent medicine entrepreneur Thomas Holloway began to advertise his ointment in 1837, claiming it would cure an impressive list of ailments—"Bad Legs, Bad Breasts, Burns, Bunions, Bite of Mosquitoes and Sandflies, Coco-bay, Chiego-foot, Chilblains, Chapped Hands, Corns (Soft), Cancers, Contracted and Stiff Joints, Elephantiasis, Fistulas, Gout, Glandular Swellings, Lumbago, Piles, Rheumatism, Scalds, Sore Nipples, Sore Throats, Skin Diseases, Scurvy, Sore Heads, Tumours, Ulcers, Wound(s), Yaws."

("Coco-bay" is a Jamaican word for a form of leprosy. "Chiego-foot" is a Trinidadian term that describes a foot covered in chigger bites.)

Holloway moved his company several times in London. "The changing address and the subtle differences in the wording and images that appear on these pots are what enable them to be dated," said Watson. The address on this particular pot—533 Oxford Street, London—indicates that it was made between 1867 and 1881.

Published February 21, 2013

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Peterson Sentenced to 38 Years for 3rd Wife's Murder

Former Illinois cop Drew Peterson yelled, "I did not kill Kathleen!" during the sentencing phase of his trial today -- and then a judge sentenced him to 38 years in jail for killing her.

The sentence came after Will County Judge Edward Burmila denied Peterson a re-trial in the killing of his third wife, Kathleen Savio, in 2004.

Peterson had faced as many as 60 years in prison.

At his sentencing, after Peterson shouted that he did not kill his wife, someone in the courtroom yelled in reply, "Yes you did!" according to ABC News Chicago station WLS. Burmila then ordered that person to leave the courtroom.

Peterson went on to claim that police "altered evidence" in his case and "intimidated witnesses and scared my children."

"I love Kathy," he said. "She was a good mom. ... She didn't deserve to die."

He added that he was planning to get a tattoo on his back that would say, "No good deed goes unpunished."

Peterson's defense team had requested a re-trial after he was found guilty in September of killing Savio and making it look like an accident.

READ MORE: Drew Peterson Found Guilty of Killing Wife, Making It Look Like Accident

M. Spencer Green/AP Photo

Drew Peterson Trial: Defense Rests, Son Shows Support Watch Video

The re-trial, Peterson's attorneys claimed, was warranted because his former lead trial counsel, Joel Brodsky, had "single-handedly" lost the trial last fall, according to attorney Steve Greenberg. Greenberg is a former colleague of Brodsky's, but the two have recently been embroiled in a bitter public feud.

Burmila today rejected all of the motions for a new trial and, as he said he would do, moved on to sentencing immediately.

It is the latest development in the bizarre story of Peterson, a former suburban Chicago police officer. In 2004, Peterson's third wife, Savio, was found dead in her bathtub, a death that was initially ruled an accident. But when his fourth wife, Stacy Peterson, disappeared in 2007, Savio's body was exhumed and her death ruled a homicide.

Drew Peterson has never been charged in connection with Stacy Peterson's case.

Drew Peterson's murder trial last fall was marred by legal battles between his attorneys and prosecutors over what evidence was allowed in court. On three separate occasions, Peterson's defense team asked for a mistrial, but it was rebuffed every time by Burmila.

A large part of the testimony in that trial was hearsay, based on comments that Savio and Stacy Peterson made to friends that portrayed Peterson as a violent and threatening husband.

Peterson said at his sentencing today that hearsay was "a scary thing" because people are not accountable for the truth, according to WLS. An emotional Peterson, his voice shaking at times, blamed the media for portraying him as a monster.

In September, a jury convicted Peterson, noting that it had reached a decision it believed was "just."

READ MORE: Drew Peterson Jury Says Hearsay Convinced Them to Convict

Savio's nephew Michael Lisak said afterwards that his aunt "can finally rest in peace."

"Today is a day for battered women, not just Kathleen Savio," Lisak said. "Your voice will be heard. My aunt's voice was heard through the grave. She would not stop. They will listen to you now."

Peterson's sister Cassandra Cales had a blunt message for the newly convicted murderer.

"Game over, Drew," she said. "He can wipe the smirk off his face. It's time to pay."

The Associated Press contributed to this report.

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Higgs may spell doom, unless supersymmetry saves us

Lisa Grossman, physical sciences reporter

(Image: CERN)

Is the Higgs boson a herald of the apocalypse? That's the suggestion behind a theory, developed more than 30 years ago, that is back in the headlines this week. According to physicists, the mass of the Higgs-like particle announced last summer supports the notion that our universe is teetering on the edge of stability, like a pencil balanced on its point.

"It may be that the universe we live in is inherently unstable," Joseph Lykken, of the Fermi National Accelerator Laboratory in Batavia, Illinois, said on Monday at a meeting of the American Association for the Advancement of Science. "At some point, billions of years from now, it's all going to be wiped out."

Physicists have been wringing their hands about this scenario since 1982, when theorists Michael Turner and Frank Wilczek published a paper about it in Nature, NBC News points out. The pair showed that the vacuum of space can be in different energy states, and it will be most stable at its lowest energy. Trouble arises if we're not there yet, and we're inhabiting a temporarily stable state that should ultimately collapse.

"The universe wants to be in a different state, so eventually to realize that, a little bubble of what you might think of as an alternate universe will appear somewhere, and it will spread out and destroy us," Lykken said at AAAS.

Enter the Higgs boson, the particle form of the field that gives mass to several fundamental particles. The Higgs field permeates the vacuum of space, which means the mass of the boson and the stability of the vacuum are closely intertwined. Theory predicted that if the Higgs boson is heavier than about 129 gigaelectronvolts (GeV), the universe should be on safe footing.

But in July 2012 physicists at CERN, near Geneva, Switzerland announced that a particle closely matching the Higgs had been found by experiments in the Large Hadron Collider (LHC). The much celebrated particle has a mass of about 126 GeV - light enough to raise fears of instability.

There is still hope for the universe as we know it. Some theorists pointed out that the relationship between the Higgs mass and the vacuum of space depends on the mass of a particle called the top quark. If the top quark's mass is different than we think it is, stability might reign.

There are also anomalies with the Higgs measurement, like the fact that it decays into photons more often than predicted. That hints we may yet find particles from the theory of supersymmetry, which says each ordinary particle has heavier "superpartners". If the Higgs has such a relative, it might save us from destruction. But some of these predicted particles, particularly the superpartners of the top quark, can push the universe back into instability.

The worries may remain unconfirmed for a while. The LHC is shutting down for a two-year break so engineers can prepare the machine to shoot higher-energy particle beams, which are needed to probe for superpartners.

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US stocks dive after Fed minutes

NEW YORK: US stocks piled up losses Wednesday after Federal Reserve minutes showed divisions over asset purchases, with some officials suggesting to wind them down before the jobs market picks up.

The Dow Jones Industrial Average finished down 108.13 points (0.77 percent) at 13,927.54.

The S&P 500-stock index fell 18.99 points (1.24 percent) to 1,511.95 and the tech-rich Nasdaq Composite dropped 49.18 points (1.53 percent) to 3,164.41, dragged down by heavyweight Apple, off 2.4 percent.

After opening mostly lower amid mixed housing and wholesale inflation data, the indexes hit fresh session lows after the Fed released the minutes of the January 29-30 Federal Open Market Committee meeting.

A "number" of participants said that an ongoing evaluation of the $85 billion per month asset purchases "might well lead the committee to taper or end its purchases before it judged that a substantial improvement in the outlook for the labor market had occurred," the minutes said.

Paul Edelstein of IHS Global Insight said in a research note that "if markets do not expect the Fed to stay the course, then expectations for economic growth and inflation will stay depressed and demand for safe assets (cash and government securities) will remain high."

Office Depot and OfficeMax meanwhile confirmed their merger after a premature announcement of the news.

The all-stock merger would create an $18 billion office supplies retailer. Office Depot shares slumped 16.7 percent and OfficeMax shed 7.0 percent.

Hotel chain Marriott fell 2.7 percent after posting quarterly results that missed expectations.

Luxury home builder Toll Brothers also suffered from disappointing earnings, losing 9.1 percent.

Dell, which reported a 32 percent profit fall in 2012 that was nevertheless slightly better than expected, rose 0.2 percent.

Yahoo! fell 1.7 percent after unveiling a new homepage.

Sony slid 1.2 percent ahead of its PlayStation 4 news conference

The bond market was mixed. The yield on the 10-year Treasury bond fell to 2.02 percent from 2.03 percent late Tuesday, while the 30-year edged up to 3.21 percent from 3.20 percent. Bond prices and yields move inversely.

-AFP/ac

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FCC takes first step toward allocating more Wi-Fi spectrum

FCC Commissioners L to R: Commissioner Jessica Rosenworcel, Commissioner Robert M. McDowell, Chairman Julius Genachowski, Commissioner Mignon Clyburn and Commissioner Ajit Pai.

(Credit:
FCC)

The Federal Communications Commission took the first steps today toward freeing up more wireless spectrum to boost Wi-Fi data speeds and ease congestion on Wi-Fi networks in hotels, airports, and homes.

During its meeting today, the five-member commission approved a proposal that will allow 195 megahertz of additional wireless spectrum in the 5GHz band to be used for unlicensed Wi-Fi use. This will increase the amount of available unlicensed spectrum by 35 percent. This is the largest block of wireless spectrum the FCC has freed up for unlicensed use in 10 years.

The commission also agreed to create rules that would streamline the process to use more devices in this upper 5GHz band of spectrum.

What this additional spectrum means for average consumers is that they will eventually get faster uploads and downloads in Wi-Fi hot spots. And the additional capacity will also help alleviate congestion in major hubs, such as airports, convention centers, and other places where large numbers of people congregate.

The 5GHz band of spectrum that the FCC has targeted for unlicensed use is already being used by federal and non-federal users. And the agency will have to work with these other agencies to either free up the spectrum or share it with these other users.

FCC Chairman Julius Genachowski talked about freeing up this spectrum for unlicensed use last month at the Consumer Electronics Show. Today's vote means that the proposal is now open for public comment. At the end of the process, the FCC will write up official rules and regulations, which the agency will once again vote on.

The FCC has been working the past few years on freeing up additional wireless spectrum for wireless broadband use. The agency is currently writing rules for a wireless spectrum auction of lower frequency spectrum that broadcasters are voluntarily giving up. And the commission has also worked to reclassify spectrum designated for satellite use so that it could be used for wireless broadband services.

Chairman Genachowski has said several times publicly that it's also important to free up more unlicensed wireless spectrum. The commission has already taken steps in recent years to free up unlicensed spectrum in lower frequency bands. Lower frequency spectrum allows signals to travel longer distances and to penetrate obstacles like walls more easily.

In 2010, the FCC allocated unused spectrum between broadcast TV channels, called white spaces, for unlicensed use. And as part of the upcoming incentive broadcast wireless auctions, the FCC has also proposed to set aside some low-band spectrum for unlicensed use.

But the idea of setting aside spectrum for unlicensed use has been controversial. Some lawmakers would like to see the FCC auction as much spectrum as possible instead of allocating it for free unlicensed use. The thinking is that this spectrum can generate revenue to help pay off the national debt or fill budget deficits.

But FCC commissioners believe that freeing up more spectrum for unlicensed use will lead to innovation, as it has in the past. Commissioner Ajit Pai said:

Flexible unlicensed spectrum use was one of this country's great innovations in the 1980s...The Commission expanded several so-called junk bands to permit additional unlicensed uses and streamlined the Part 15 rules accordingly. Unlicensed spectrum in the 2.4GHz and 5GHz bands is now some of the most valuable spectrum in the world for broadband. And consumers are the ultimate beneficiaries of unlicensed-use technologies such as Wi-Fi and Bluetooth.

The commission also approved new regulation that will allow consumers to use approved and licensed signal boosters to fill gaps in wireless coverage. The new rules create two classes of signal boosters. One will be for consumer use while the other will be used by businesses. Each will have their own set of requirements to minimize interference with other wireless networks. The move is expected to alleviate dead spots in cellular wireless coverage.

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Suitcase-size Satellite to Patrol for Dangerous Asteroids

Earth received a wakeup call last week with a double shot of incoming space rocks—the near miss of asteroid DA14 and the Russian meteor explosion. Our planet is in a cosmic shooting gallery and more work needs to be done to survey menacing asteroids, astronomers say.

Now the Canadian Space Agency is stepping up to the plate to help do just that with the launch of a new sentinel to detect and track near-Earth objects (NEOs). The pint-size space telescope is hitching a ride into orbit aboard an Indian rocket on February 25.

Even though the Near-Earth Object Space Surveillance Satellite (NEOSSat) might find it challenging to hunt down relatively smaller size meteors, like the one that crashed in Russia last week, it will be the first telescope in orbit dedicated to keeping tabs on what's buzzing around Earth. ("Pictures: Meteorite Hits Russia.")

In addition to keeping an eye out for space rocks, NEOSSat will pull double duty by monitoring traffic among the increasing crowd of orbiting satellites—guarding against collisions between wayward space junk. (Learn about how satellite collisions create dangerous debris.)

In recent years there have been a few head-on collisions between orbiting satellites and several near misses with the International Space Station, making this a concern for satellite providers and space agencies.

Suitcase-size Sentinel

Weighing in at a mere 143 pounds (65 kilograms), this $12 million suitcase-size satellite will spend half its time pinpointing asteroids. Researchers say it could find at least a hundred new ones during its first year of operation—some of which currently have undetected orbits between the Earth and the sun.

"This spacecraft is designed to be able to search the sky near the sun, which is difficult for Earth-based telescopes to do, and so it therefore complements ground-based search programs," said Alan Hildebrand, planetary scientist at the University of Calgary in Alberta, Canada, and lead scientist for the NEOSSat mission.

Outfitted with a special sunshade, the telescope will be pointed precisely within a 45 degree angle of the sun in order to continuously snap hundred-second-long exposures that the team hopes will eventually reveal at least 50 percent of the asteroids half a mile (one kilometer) across or larger within Earth's orbit around the sun.

Asteroids from far out in the solar system sometimes swing past Earth, but the most dangerous ones are those that continually cross Earth's orbit—like the inner-Earth objects (IEOs), or Atira class asteroids, which shuttle between our planet and the sun.

NEOSSat's six-inch-wide (15-centimeter-wide) telescope is no larger than those used by many backyard astronomers. But when observing space from Earth, there is simply too much scattered sunshine and atmosphere, making it difficult to spot IEOs, added Hildebrand.

Flying in a polar orbit some 435 miles (700 kilometers) above the blurring effects of the atmosphere, the tiny spacecraft will be on duty around the clock, "so it should be able to spot asteroids that are even fainter than what some of the current ground-based surveys are capable of," he said.

Celestial Hide-and-Seek

Robert Jedicke, an astronomer at the University of Hawaii, who is not involved with the mission, calls Atira asteroids the champions in the hide-and-seek-game of NEO surveying. (Learn how the University of Hawaii is monitoring asteroids.)

Some NEOs hide in plain sight, said Jedicke. They move like asteroids much farther away from Earth, fooling observers into thinking the NEO is more distant than it actually is. And we can't spot some IEOs simply because they're hidden in the sun's glare, he added.

"Finding them will allow us to fine-tune the calculations of the risk of Earth impact and to test our theories that govern the evolution of asteroid orbits out of the main belt into the region near Earth."

While the technology for finding potentially dangerous asteroids has matured over the past couple of decades, most of the asteroids—larger than the Russian meteor—that can cause serious damage haven't been discovered yet, warned Jedicke.

"Just like the Chelyabinsk meteor, right now, the most likely warning time we have of an asteroid impact is zero," he said.

"While NEOSSat will make an important contribution to the goal of reducing the NEO impact risk, there will still be much left to be done."

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