Black Hole Spins at Nearly the Speed of Light

A superfast black hole nearly 60 million light-years away appears to be pushing the ultimate speed limit of the universe, a new study says.

For the first time, astronomers have managed to measure the rate of spin of a supermassive black hole—and it's been clocked at 84 percent of the speed of light, or the maximum allowed by the law of physics.

"The most exciting part of this finding is the ability to test the theory of general relativity in such an extreme regime, where the gravitational field is huge, and the properties of space-time around it are completely different from the standard Newtonian case," said lead author Guido Risaliti, of the Harvard-Smithsonian Center for Astrophysics (CfA) and INAF-Arcetri Observatory in Italy. (Related: "Speedy Star Found Near Black Hole May Test Einstein Theory.")

Notorious for ripping apart and swallowing stars, supermassive black holes live at the center of most galaxies, including our own Milky Way. (See black hole pictures.)

They can pack the gravitational punch of many million or even billions of suns—distorting space-time in the region around them, not even letting light to escape their clutches.

Galactic Monster

The predatory monster that lurks at the core of the relatively nearby spiral galaxy NGC 1365 is estimated to weigh in at about two million times the mass of the sun, and stretches some 2 million miles (3.2 million kilometers) across-more than eight times the distance between Earth and the moon, Risaliti said. (Also see "Black Hole Blast Biggest Ever Recorded.")

Risaliti and colleagues' unprecedented discovery was made possible thanks to the combined observations from NASA's high-energy x-ray detectors on its Nuclear Spectroscopic Telescope Array (NuSTAR) probe and the European Space Agency's low-energy, x-ray-detecting XMM-Newton space observatory.

Astronomers detected x-ray particle remnants of stars circling in a pancake-shaped accretion disk surrounding the black hole, and used this data to help determine its rate of spin.

By getting a fix on this spin speed, astronomers now hope to better understand what happens inside giant black holes as they gravitationally warp space-time around themselves.

Even more intriguing to the research team is that this discovery will shed clues to black hole's past, and the evolution of its surrounding galaxy.

Tracking the Universe's Evolution

Supermassive black holes have a large impact in the evolution of their host galaxy, where a self-regulating process occurs between the two structures.

"When more stars are formed, they throw gas into the black hole, increasing its mass, but the radiation produced by this accretion warms up the gas in the galaxy, preventing more star formation," said Risaliti.

"So the two events—black hole accretion and formation of new stars—interact with each other."

Knowing how fast black holes spin may also help shed light how the entire universe evolved. (Learn more about the origin of the universe.)

"With a knowledge of the average spin of galaxies at different ages of the universe," Risaliti said, "we could track their evolution much more precisely than we can do today."

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Sequester: What Will Happen, What Won't Happen

When it comes to critical elements of the sequester timeline, not much is known -- because federal agencies have been tight lipped.

Asked when specific effects will be felt, officials at three federal departments declined to discuss the timing of sequester cuts and their consequences. Some departments were waiting for President Obama's Friday night sequester order and subsequent guidance they expected to receive from the Office of Management and Budget before talking about what would and wouldn't happen and when.

Read more: 57 Terrible Consequences of the Sequester

"There's no calendar of dates for specific actions or cuts on specific dates," Department of Health and Human Services public affairs officer Bill Hall told ABC News. "Again, these cuts need to be applied equally across all agency programs, activities and projects. There will be wide variation on when impacts will occur depending on a given program."

Some cuts won't be felt for a while because they have to do with government layoffs, which require 30 days notice, in most cases.

For instance, the Federal Aviation Administration won't begin layoffs until at least April 7, one FAA official estimated.

But some cuts don't involve furloughs, and could conceivably be felt immediately.

The Department of Homeland Security declined to comment on the timeline of layoffs to cybersecurity contractors and first responders funded through states, as well as limited Coast Guard operations and cuts to FEMA disaster relief.

The Department of Housing and Urban Development said it could not comment on cuts to housing vouchers, rent assistance for AIDS patients, maintenance for housing projects.

Andrew Harrer/Bloomberg/Getty Imag

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The Department of Health and Human Services declined to discuss the specific timing of cuts to Head Start services, low-income mental-health services, AIDS/HIV testing, and inpatient substance-abuse treatment.

Read More: Automatic Cuts Could Hurt on Local Level

So even as the sequester hits, we still don't know when some of its worst effects will be felt.

Here's what we do know:

What Will Happen Saturday

      Air Force Training. At a briefing Friday, Deputy Defense Secretary Ashton Carter warned that "effective immediately, Air Force flying hours will be cut back."

More from Carter, via ABC News' Luis Martinez: "What does that mean for national security? What it means is that as the year goes on, apart from Afghanistan, apart from nuclear deterrence through two missions we are strictly protecting, the readiness of the other units to respond to other contingencies will gradually decline. That's not safe. And that we're trying to minimize that in every way we possibly can."

      Closed Doors at the Capitol. ABC News' Sunlen Miller reports that Capitol Police issued a memo announcing it would have to close some entrances to the Capitol, writing: "At this time it is anticipated that the U.S. Capitol Police will be required to close some entrance doors and exterior checkpoints, and either suspend or modify the hours of operation for some of the U.S. Capitol Complex posts located inside and outside of the CVC and Office Buildings."

      Capitol Janitor Furloughs. After President Obama warned that janitors at the Capitol will be furloughed, ABC News' Sunlen Miller reported that was not entirely true: The Senate sergeant at arms, Terrance Gainer, told ABC News that no full-time salaried Capitol Police officers would face furloughs or layoffs at this time. They will, however, see a "substantial reduction in overtime," Gainer told ABC News.

      Delayed Deployment for USS Truman Aircraft Carrier. This has already happened, the Associated Press reported Friday morning: "One of the Navy's premiere warships, the aircraft carrier USS Harry S. Truman, sits pier-side in Norfolk, Va., its tour of duty delayed. The carrier and its 5,000-person crew were to leave for the Persian Gulf on Feb. 8, along with the guided-missile cruiser USS Gettysburg."

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British PM under pressure after election rout

EASTLEIGH, United Kingdom: British Prime Minister David Cameron was under pressure on Friday after his Conservatives were beaten into third place in a key election by his scandal-hit coalition partners and a eurosceptic party.

Cameron admitted it was a "disappointing" night for his party after the Liberal Democrats held the parliamentary seat of Eastleigh in southern England in a contest billed as the most important British by-election in a generation.

The Conservatives had hoped at least to come in second but they were condemned to third place by the anti-European Union and anti-immigration UK Independence Party, which registered its best ever performance.

The vote was sparked by the resignation of disgraced former energy minister Chris Huhne, a Liberal Democrat who has pleaded guilty to trying to avoid a speeding fine.

Deputy Prime Minister Nick Clegg, whose own position as Lib Dem leader had been on the line after a collapse in the party's poll ratings, said the "stunning victory" showed they "can be a party of government and still win".

UKIP leader Nigel Farage insisted the party's best ever result in a British election was not a "protest vote".

Cameron said he was "confident" the Conservatives could win back support at the next general election, which is due in 2015.

"It is a disappointing result for the Conservative party but it's clear that in mid-term by-elections people want to register a protest," the prime minister told the BBC.

The returning officer announced shortly after 0200 GMT on Friday that Lib Dem candidate Mike Thornton had secured 13,342 votes, 1,771 more than UKIP representative Diane James.

Tory nominee Maria Hutchings limped in third with 10,559 votes in a seat that the Conservatives held as recently as 1994, while the main opposition Labour party's candidate John O'Farrell was fourth with 4,088.

The Lib Dems overcame not only the Huhne scandal, but also an ongoing row surrounding the party's handling of claims that its former chief executive Chris Rennard molested female party members.

A jubilant Clegg told supporters in Eastleigh that they had won the election in "exceptionally difficult circumstances" and that "our opponents have thrown everything at us".

"Two and a half years ago when we entered into coalition with the Conservatives our critics said we were going to lose our soul. Last night, we proved those critics are emphatically wrong," Clegg told supporters.

The coalition has brought in a series of unpopular austerity measures to tackle Britain's record deficit, but it is the centrist Lib Dems who have taken a far bigger hit in opinion polls than the centre-right Conservatives.

UKIP's James said her second-place finish was a "humongous shock" that showed the party was now a major force in British politics.

Farage -- a member of the European parliament who had reportedly considered standing in Eastleigh himself before backing out -- said he was confident UKIP would win seats in the 2015 general election.

"If the Conservatives hadn't split our vote we would have won," he told the BBC.

He said Cameron had alienated voters by "talking about gay marriage, wind turbines, unlimited immigration from India (and) he wants Turkey to join the European Union."

Senior Conservative David Davis had earlier warned that third place for the party would be a "crisis" that would place serious doubt over Cameron's leadership.

But Cameron rejected the claims and dismissed talk that the party would now lurch to the right.

The result came despite Cameron's pledge in January to renegotiate Britain's relationship with the European Union and then put British membership of the bloc to a referendum by the end of 2017.

The vow was supposed to head off both the threat from UKIP and the increasingly noisy eurosceptic wing of his own Conservative party, but appeared not to have resonated with voters.

- AFP/al

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SC dismisses PIL for SIT probe into chopper deal

NEW DELHI: The Supreme Court on Friday dismissed a PIL seeking apex-court monitored probe by a special investigation team (SIT) or CVC into the alleged kickbacks in the Rs 3600 crore VVIP chopper deal.

"It is not a correct forum," a bench comprising justices Aftab Alam and Ranjana Prakash said while dismissing the PIL filed by an advocate.

The PIL filed by M L Sharma had sought an SIT or Central Vigilance Commission (CVC) probe under the supervision of the apex court without involving CBI which, it had alleged, was under government's control.

It had also asked for a direction to the defence ministry to scrap the contract with Italian company Finmeccanica for the supply of 12 AW101 helicopters. Finmeccanica's subsidiary AgustaWestland manufactures the choppers, three of which have been delivered to India to ferry VVIPs.

The petition had alleged that despite information available since 2011, no FIR was lodged against Indian citizens allegedly involved in the deal.

The PIL was filed after defence minister A K Antony had ordered a CBI probe into the allegations of payment of bribes to clinch the deal.

Giuseppe Orsi, who was the head of Finmeccanica, was arrested last month on charges of tax fraud and corruption including alleged pay-offs in the chopper deal. India has put on hold the receipt of the remaining helicopters as well as rest of the payment for the deal struck in 2010.

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Scarred Duckbill Dinosaur Escaped T. Rex Attack

A scar on the face of a duckbill dinosaur received after a close encounter with a Tyrannosaurus rex is the first clear case of a healed dinosaur wound, scientists say.

The finding, detailed in the current issue of the journal Cretaceous Research, also reveals that the healing properties of dinosaur skin were likely very similar to that of modern reptiles.

The lucky dinosaur was an adult Edmontosaurus annectens, a species of duckbill dinosaur that lived in what is today the Hell Creek region of South Dakota about 65 to 67 million years ago. (Explore a prehistoric time line.)

A teardrop-shaped patch of fossilized skin about 5 by 5 inches (12 by 14 centimeters) that was discovered with the creature's bones and is thought to have come from above its right eye, includes an oval-shaped section that is incongruous with the surrounding skin. (Related: "'Dinosaur Mummy' Found; Have Intact Skin, Tissue.")

Bruce Rothschild, a professor of medicine at the University of Kansas and Northeast Ohio Medical University, said the first time he laid eyes on it, it was "quite clear" to him that he was looking at an old wound.

"That was unequivocal," said Rothschild, who is a co-author of the new study.

A Terrible Attacker

The skull of the scarred Edmontosaurus also showed signs of trauma, and from the size and shape of the marks on the bone, Rothschild and fellow co-author Robert DePalma, a paleontologist at the Palm Beach Museum of Natural History in Florida, speculate the creature was attacked by a T. rex.

It's likely, though still unproven, that both the skin wound and the skull injury were sustained during the same attack, the scientists say. The wound "was large enough to have been a claw or a tooth," Rothschild said.

Rothschild and DePalma also compared the dinosaur wound to healed wounds on modern reptiles, including iguanas, and found the scar patterns to be nearly identical.

It isn't surprising that the wounds would be similar, said paleontologist David Burnham of the University of Kansas Biodiversity Institute, since dinosaurs and lizards are distant cousins.

"That's kind of what we would expect," said Burnham, who was not involved in the study. "It's what makes evolution work—that we can depend on this."

Dog-Eat-Dog

Phil Bell, a paleontologist with the Pipestone Creek Dinosaur Initiative in Canada who also was not involved in the research, called the Edmontosaurus fossil "a really nicely preserved animal with a very obvious scar."

He's not convinced, however, that it was caused by a predator attack. The size of the scar is relatively small, Bell said, and would also be consistent with the skin being pierced in some other accident such as a fall.

"But certainly the marks that you see on the skull, those are [more consistent] with Tyrannosaur-bitten bones," he added.

Prior to the discovery, scientists knew of one other case of a dinosaur wound. But in that instance, it was an unhealed wound that scientists think was inflicted by scavengers after the creature was already dead.

It's very likely that this particular Edmontosaurus wasn't the only dinosaur to sport scars, whether from battle wounds or accidents, Bell added.

"I would imagine just about every dinosaur walking around had similar scars," he said. (Read about "Extreme Dinosaurs" in National Geographic magazine.)

"Tigers and lions have scarred noses, and great white sharks have got dings on their noses and nips taken out of their fins. It's a dog-eat-dog world out there, and [Edmontosaurus was] unfortunately in the line of fire from some pretty big and nasty predators ... This one was just lucky to get away."

Mysterious Escape

Just how Edmontosaurus survived a T. rex attack is still unclear. "Escape from a T. rex is something that we wouldn't think would happen," Burnham said.

Duckbill dinosaurs, also known as Hadrosaurs, were not without defenses. Edmontosaurus, for example, grew up to 30 feet (9 meters) in length, and could swipe its hefty tail or kick its legs to fell predators.

Furthermore, they were fast. "Hadrosaurs like Edmontosaurus had very powerful [running] muscles, which would have made them difficult to catch once they'd taken flight," Bell said.

Duckbills were also herd animals, so maybe this one escaped with help from neighbors. Or perhaps the T. rex that attacked it was young. "There's something surrounding this case that we don't know yet," Burnham said.

Figuring out the details of the story is part of what makes paleontology exciting, he added. "We construct past lives. We can go back into a day in the life of this animal and talk about an attack and [about] it getting away. That's pretty cool."

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Sequester Set to Trigger Billions in Cuts

Nobody likes the sequester.

Even the word is enough to send shivers of fiscal panic, or sheer political malaise, down the spines of seasoned politicians and news reporters. And today, the sequester will almost certainly happen, a year and a half after its inception as an intentionally unpalatable event amid the stalemate of the debt-limit crisis in 2011.

Automatic budget cuts will be triggered across federal agencies, as President Obama will be required to order sequestration into effect before midnight Friday night. The federal bureaucracy will implement its various plans to save the money it's required to save.

Now that the sequester will probably happen, here are some questions and answers about it:

1. HOW BIG IS IT?

The cuts were originally slated for $109 billion this year, but after the fiscal-cliff deal postponed the sequester for two months by finding alternate savings, the sequester will amount to $85 billion over the remainder of the year. Over the rest of the year, nondefense programs will be cut by nine percent, and defense programs will be cut by 13 percent.

If carried out over 10 years (as designed), the sequester will amount to $1.2 trillion in total.

2. WHAT WILL BE CUT, SPARED?

Most government programs will be cut, including both defense and nondefense spending, with the cuts distributed evenly (by dollar amount) over those two categories.

Some vital domestic entitlements, however, will be spared. Social Security checks won't shrink; nor will Veterans Administration programs. Medicare benefits won't get cut, but payments to providers will shrink by two percent. The Children's Health Insurance Program (CHIP), food stamps, Pell grants, and Medicaid will all be shielded from the sequester.

But lots of things will get cut. The Obama administration has warned that a host of calamities will befall vulnerable segments of the population.

3. WHY DOES IT HAVE TO BE SO BAD?

Questions persist over whether or not it really does.

The sequester will mean such awful things because it forces agencies to cut things indiscriminately, instead of simply stripping money from their overall budgets.

But some Republicans, including Oklahoma Sen. Tom Coburn, have suggested that federal agencies have plenty of flexibility to implement these cuts while avoiding the worst of the purported consequences. Louisiana Gov. Bobby Jindal accused President Obama of trying to "distort" the severity of the sequester. The federal government will still spend more money than it did last year, GOP critics of sequester alarmism have pointed out.

The White House tells a different story.

According to the Office of Management and Budget, the sequestration law forces agency heads to cut the same percentage from each program. If that program is for TSA agents checking people in at airports, the sequester law doesn't care, and Homeland Security Secretary Janet Napolitano can't do anything about it.

Agency heads do have some authority to "reprogram" funds, rearranging their money to circumvent the bad effects. But an OMB official told ABC News that "these flexibilities are limited and do not provide significant relief due to the rigid nature of the way in which sequestration is required by law to be implemented."

4. WHEN WILL THE WORST OF IT START?

Not until April -- but some of the cuts could be felt before then.

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Govt taking brave step to achieve quality growth, inclusive society: Dr Yaacob

SINGAPORE: Communications and Information Minister and Minister-in-Charge of Muslim Affairs Dr Yaacob Ibrahim has described Budget 2013 as a brave step taken by the government to achieve quality growth and an inclusive society.

Dr Yaacob made the statement during the first Budget Forum to be conducted in Malay.

The forum will be aired on MediaCorp TV channel Suria from 9.30pm to 10.30pm on Thursday.

He said the government has to make some specific choices to achieve the two objectives.

These include reducing the number of foreign workers and extending more help to businesses and those who are in need.

He said the economy also needs to be restructured in order to improve productivity.

Some 20 people from all walks of life were invited to share their views on the Budget.

Polls were also conducted during the show. Nearly 8 in 10 participants felt Budget 2013 could bring about quality growth and an inclusive society.

One way the Budget aims to do this is to have a more progressive tax structure, with the rich paying more.

Dr Yaacob said such a policy is useful, but needs to evolve depending on the conditions of the economy.

"If in the future, our economy slows down and affects all levels of society, it may not be possible to implement this," he said.

"But as one of the policy tools, I feel this is one the government can use in suitable times because we know the income inequality has to be looked into as we do not want to see the emergence of two classes in Singapore ... which could affect our harmony," Dr Yaacob added.

- CNA/al

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Samajwadi Party wins Bhatparrani by-election

DEORIA (UTTAR PRADESH): Samajwadi Party candidate AshutoshUpadhyaya on Thursday won the bypoll for Bhatparrani assembly seat, defeating his nearest rival, an independent candidate, by 34,102 votes.

Upadhyaya alias Babloo, son of former Uttar Pradesh Minister Kameshwar Upadhyaya, got 73,100 votes, while the independent candidate, Sabha Kunwar, was polled 38,998 votes.

According to returning officer and District Magistrate Kumar Ravikant Singh, Upadhyaya defeated Kunwar by a margin of 34,102 votes.

BSP candidate Bindra Kushwaha was on the third place with 24,711 votes.

The by-election was necessitated after the death of former state Sports Minister Kameshwar Upadhyaya in October last year.

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Why African Rhinos Are Facing a Crisis

The body count for African rhinos killed for their horns is approaching crisis proportions, according to the latest figures released by the International Union for Conservation of Nature (IUCN).

To National Geographic reporter Peter Gwin, the dire numbers—a rhinoceros slain every 11 minutes since the beginning of 2013—don't come as a surprise. "The killing will continue as long as criminal gangs know they can expect high profits for selling horns to Asian buyers," said Gwin, who wrote about the violent and illegal trade in rhino horn in the March 2012 issue of the magazine.

The recent surge in poaching has been fueled by a thriving market in Vietnam and China for rhino horn, used as a traditional medicine believed to cure everything from hangovers to cancer. Since 2011, at least 1,700 rhinos, or 7 percent of the total population, have been killed and their horns hacked off, according to the IUCN. More than two-thirds of the casualties occurred in South Africa, home to 73 percent of the world's wild rhinos. In Africa there are currently 5,055 black rhinos, listed as critically endangered by the IUCN, and 20,405 white rhinos. (From our blog: "South African Rhino Poaching Hits New High.")

Trying to snuff out poaching by itself won't work, said Gwin. The South African government is fighting a losing battle on the ground to gangs using helicopters, dart guns, high-powered weapons—and lots of money. (National Geographic pictures: The bloody poaching battle over rhino horn [contains graphic images].)

"Every year they get tougher on poaching, but rhino killings continue to rise astronomically," said Gwin. "Somehow they have to address the demand side in a meaningful way. This means either shutting down the Asian markets for rhino horn, or controversially, finding a way to sustainably harvest rhino horns, control their legal sale, and meet what appears to be a huge demand. Either will be a formidable endeavor."

Hope and Hurdles

The signing in December of a memorandum of understanding between South Africa and Vietnam to deal with rhino poaching and other conservation issues raises hope for some concrete action. Observers say the next step is for the two governments to follow through with tangible crime-stopping efforts such as intelligence sharing and other collaboration. The highest hurdle to stopping criminal trade, though, is cultural, Gwin believes. "In Vietnam and China, a lot of people simply believe that as a traditional cure, rhino horn works." (Related: "Blood Ivory.")

The recent climb in rhino deaths threatens what had been a conservation success story. Since 1995, due to better law enforcement, monitoring, and other actions, the overall rhino numbers have steadily risen. The poaching epidemic, the IUCN warns, could dramatically slow and possibly reverse population gains.

The population growth is also being stymied by South Africa's private game farmers, who breed rhinos for sport hunting and tourism and for many years have helped rebuild rhino numbers. Many of them are getting out of the business due to the high costs of security and other risks associated with the poaching invasions.

Those who still have rhinos on their farms will often pay a veterinarian to cut the horns off—under government supervision—to dissuade poachers, but the process costs more than $2,000 and has to be repeated when the horns grow back every two years. Even then the farmers are stuck with horns that are illegal to sell—and which criminals seek to obtain.

Room for Debate

Rhino killings and the trade in their horns will be a major topic at a high-profile conference, the 16th meeting of the Conference of the Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which opens in Bangkok March 3. What won't surprise Gwin is if the issue of sustainably harvesting rhino horns from live animals comes up for discussion.

"It's an idea that seems to be gaining traction among some South African politicians and law enforcement circles," he said, noting that the international conservation community strongly opposes any talk of legalizing the trade of rhino horn, sustainably harvested or not. The bottom line for all parties in the discussion is clear, said Gwin: "The slaughter has to stop if rhinos are to survive."

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Benedict Pledges 'Obedience' to New Pope

In his farewell remarks to his colleagues in the Roman Catholic Church, Pope Benedict XVI, the first pontiff to resign in 600 years, promised his "unconditional reverence and obedience" to his eventual successor.

Benedict, in a morning meeting at the Vatican, urged the cardinals to act "like an orchestra" to find "harmony" moving forward.

Benedict, 85, is spending a quiet final day as pope bidding farewell to his colleagues and moving on to a secluded life of prayer, far from the grueling demands of the papacy and the scandals that have recently plagued the church.

His first order of business was a morning meeting with the cardinals in the Clementine Hall, a room in the Apostolic Palace. Despite the historical nature of Benedict's resignation, not all cardinals attended the event. With their first working meeting not until Monday, only around 100 cardinals were set to attend, the Vatican press office said Wednesday. Those who are there for Benedict's departure will be greeted by seniority. Angelo Sodano, the dean of the College of Cardinals, thanked Benedict for his service to the church during the eight years he has spent as pontiff.

Pope Benedict XVI Delivers Farewell Address

In the evening, at 5:00 p.m. local time, Benedict will leave the Vatican palace for the last time to head to Castel Gandolfo, the papal summer residence outside of Rome. Before his departure the German-born theologian will say some goodbyes in the Courtyard of San Damaso, inside the Vatican, first to his Secretary of State Cardinal Tarcisio Bertone and then to the Swiss Guards who have protected him as pontiff.

9 Men Who Could Replace Pope Benedict XVI

From there it is a short drive to a heliport for the 15-minute flight via helicopter to Castel Gandolfo, just south of the city. Benedict will not be alone on his journey, accompanied by members of the Pontifical Household such as two private secretaries, the head of protocol, his personal physician and his butler.

Once Benedict lands in the gardens at Castel Gandolfo, a group of dignitaries, such as the governor of the Vatican City state Giovanni Bertello, two bishops, the director of the pontifical villas, and the mayor and parish priest. Off the helicopter and into a car, Benedict will head to the palace that he will call home for the coming months. From a window of the palace, Benedict will make one final wave to the crowd at the papal retreat.

It is there, at 8:00 p.m., that Benedict's resignation will take effect once and for all. Once the gates to the residence close, the Swiss Guards will leave Benedict's side for the last time, their time protecting the pontiff completed.

Pope Benedict's Last Sunday Prayer Service

For some American Catholics in Rome for the historic occasion, Benedict's departure is bittersweet. Christopher Kerzich, a Chicago resident studying at the Pontifical North American College of Rome, said Wednesday he is sad to see Benedict leave, but excited to see what comes next.

"Many Catholics have come to love this pontiff, this very humble man," Kerzich said. "He is a man who's really fought this and prayed this through and has peace in his heart. I take comfort in that and I think a lot of Catholics should take comfort in that."

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