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Hubble identifies unusual wrinkle in expansion rate of the universe | CNN

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Hubble identifies unusual wrinkle in expansion rate of the universe | CNN

Join CNN’s Surprise Concept science publication. Discover the universe with information on fascinating discoveries, scientific developments and extra.



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Measuring the enlargement price of the universe was one of many Hubble House Telescope’s foremost targets when it was launched in 1990.

Over the previous 30 years, the house observatory has helped scientists uncover and refine that accelerating price – in addition to uncover a mysterious wrinkle that solely brand-new physics might clear up.

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Hubble has noticed greater than 40 galaxies that embrace pulsating stars in addition to exploding stars known as supernovae to measure even better cosmic distances. Each of those phenomena assist astronomers to mark astronomical distances like mile markers, which have pointed to the enlargement price.

Within the quest to grasp how shortly our universe expands, astronomers already made one sudden discovery in 1998: “darkish power.” This phenomenon acts as a mysterious repulsive drive that accelerates the enlargement price.

And there may be one other twist: an unexplained distinction between the enlargement price of the native universe versus that of the distant universe proper after the large bang.

Scientists don’t perceive the discrepancy, however acknowledge that it’s bizarre and will require new physics.

“You’re getting probably the most exact measure of the enlargement price for the universe from the gold commonplace of telescopes and cosmic mile markers,” mentioned Nobel Laureate Adam Riess on the House Telescope Science Institute and a distinguished professor on the Johns Hopkins College in Baltimore, in an announcement.

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“That is what the Hubble House Telescope was constructed to do, utilizing the very best methods we all know to do it. That is probably Hubble’s magnum opus, as a result of it will take one other 30 years of Hubble’s life to even double this pattern dimension.”

The telescope was named for pioneering astronomer Edwin Hubble, who found within the Nineteen Twenties that distant clouds within the universe had been truly galaxies. (He died in 1953.)

Hubble relied on the work of astronomer Henrietta Swan Leavitt’s 1912 discovery of the intervals of brightness in pulsating stars known as Cepheid variables. Cepheids act like cosmic mile markers as they brighten and dim periodically inside our galaxy and others.

Hubble’s work led to the revelation that our galaxy was certainly one of many, perpetually altering our perspective and place within the universe. The astronomer continued his work and found that distant galaxies gave the impression to be shifting quickly, suggesting that we stay in an increasing universe that began with a giant bang.

The detection of the universe’s enlargement price helped result in the 2011 Nobel Prize in Physics, awarded to Saul Perlmutter, Brian P. Schmidt and Riess “for the invention of the accelerating enlargement of the universe by way of observations of distant supernovae.”

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Riess continues to guide SHOES, brief for Supernova, H0, for the Equation of State of Darkish Power, a scientific collaboration investigating the universe’s enlargement price. His workforce is publishing a paper in The Astrophysical Journal that gives the most recent replace on the Hubble fixed, because the enlargement price is thought.

Measuring distant objects has created a “cosmic distance ladder” that may assist scientists higher estimate the age of the universe and perceive its foundations.

A number of groups of astronomers utilizing the Hubble telescope have arrived at a Hubble fixed worth that equals 73 plus or minus 1 kilometer per second per megaparsec. (A megaparsec is a million parsecs, or 3.26 million gentle years.)

“The Hubble fixed is a really particular quantity. It may be used to string a needle from the previous to the current for an end-to-end take a look at of our understanding of the universe. This took an outstanding quantity of detailed work,” mentioned Licia Verde, a cosmologist on the Catalan Establishment for Analysis and Superior Research and the Institute of Cosmos Science on the College of Barcelona, in an announcement.

However the precise predicted enlargement price of the universe is slower than what the Hubble telescope has noticed, in keeping with astronomers using the usual cosmological mannequin of the universe (a idea suggesting the elements of the large bang) and measurements taken by the European House Company’s Planck mission between 2009 and 2013.

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Planck, one other house observatory, was used to measure the cosmic microwave background, or the leftover radiation from the large bang 13.8 billion years in the past.

Planck mission scientists arrived at a Hubble fixed of 67.5 plus or minus 0.5 kilometers per second per megaparsec.

The James Webb House Telescope, which launched in December, will be capable of observe Hubble’s mile markers in sharper decision and at better distances, which might contribute to understanding the discrepancy between the 2 numbers.

It makes for an thrilling problem to cosmologists who had been as soon as decided to measure the Hubble fixed – and now discover themselves questioning what further physics might assist them unlock a brand new thriller concerning the universe.

“Really, I don’t care what the enlargement worth is particularly, however I like to make use of it to be taught concerning the universe,” Riess mentioned.

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Democrat donors warn Joe Biden that stance on Gaza could threaten re-election

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Democrat donors warn Joe Biden that stance on Gaza could threaten re-election

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A top donor to US President Joe Biden has called on him to halt arms shipments to Israel, warning that the “catastrophe” of the Israel-Hamas war has imperilled his re-election bid.

George Krupp, who expects to raise $2.5mn at a fundraiser he is co-hosting in Boston on Tuesday, urged Biden to take the issue “off the table” by suspending arms shipments to Israel. 

“I think this Israel thing has been a catastrophe for him,” Krupp told the Financial Times. “I absolutely think that Biden needs to suspend arms shipments both for humanitarian and political reasons.”

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The president’s stance on the war has divided Democrats across religious and generational lines. He has strongly supported Israel’s right to defend itself in response to the October 7 Hamas attacks.

On Monday he described the International Criminal Court’s application for arrest warrants against Israeli leaders as “outrageous”, adding: “We will always stand with Israel against threats to its security.”

But there has been growing criticism within the party over his failure to rein in the government of Prime Minister Benjamin Netanyahu as the death toll in its war against Hamas has soared to more than 34,000, according to Palestinian officials.

The president this month paused a shipment of bombs to Israel over Netanyahu’s refusal to rule out an invasion of the Gazan city of Rafah, but last week he approved a $1bn package of military aid to the country. In April the US vetoed of a Security Council resolution that would have granted a Palestinian state full membership of the UN.

There are fears that young voters opposed to Israel’s military offensive in Gaza could desert Biden over the issue, while pro-Israeli Democrats could turn to Donald Trump.

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More than 100,000 Democrats — or 13 per cent of the total vote — in Michigan, which has a large Arab-American community, voted “uncommitted” in the March 15 Democratic presidential primary over Biden’s stance.

Krupp, who signed a letter in March along with dozens of other donors and activists expressing their concern about “the crisis in Gaza”, told the FT that Biden’s “equivocation” over the war is “hurting” his re-election campaign. He added that the president needs a clear “doctrine” that “gets Israel out of Gaza and lays out a path to a two state solution”.

Krupp’s comments came after Democratic mega donor Haim Saban criticised Biden’s decision to halt the heavy weapons shipment to Israel. 

“Bad, Bad, Bad, decision, on all levels, Pls reconsider,” Saban wrote in an email to White House senior officials last week. “There are more Jewish voters, who care about Israel, than Muslim voters that care about Hamas,” he added in comments that were criticised by the Council on American-Islamic Relations and other civil rights groups. A representative for Saban declined to comment.

Democrats hope the party will unite to prevent a Trump victory. They point out that the former president called for a ban on Muslim immigrants in 2015. Biden has also been far more successful at raising funds, attracting $66mn more than Trump by the end of March.

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“Donald Trump’s actions against the Muslim community as president are abhorrent,” New York Governor Kathy Hochul told the FT. “I support the president, how he’s handling this . . . [Israel needs] to eradicate Hamas but we also need to make sure the loss of innocent lives is mitigated.”

Patricia Gordon, a board member of the liberal, pro-Israel group J Street, who has hosted a fundraiser with first lady Jill Biden, said she also supported Biden’s approach to Israel and was confident that he would prevail.

“The president will always defend Israel, but recently took the difficult step to prevent the misuse of American resources in an offensive way,” Gordon said.

But with opinion polls favouring Trump, Krupp and many Democrats fear that the Gaza war could tip the balance against the president.

“I think if the election were held today, I think he’d lose,” said Krupp.

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Additional reporting by Jude Webber in Dublin

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Red Lobster files for bankruptcy after missteps including all-you-can-eat shrimp

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Red Lobster files for bankruptcy after missteps including all-you-can-eat shrimp

This Red Lobster in Maryland was among dozens of locations that closed abruptly ahead of the restaurant’s bankruptcy filing.

Alina Selyukh/NPR


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Alina Selyukh/NPR


This Red Lobster in Maryland was among dozens of locations that closed abruptly ahead of the restaurant’s bankruptcy filing.

Alina Selyukh/NPR

Red Lobster, America’s largest seafood chain known for its shrimp and Cheddar Bay biscuits, has filed for bankruptcy.

Its seafood restaurants are in hot water after a series of bad choices by a parade of executives, including an ill-fated promotion for all-you-can-eat-shrimp starting at $20.

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Almost 580 locations in the U.S. and Canada are expected to stay open through the process, employing about 36,000 workers. Last week, dozens of other Red Lobster locations closed abruptly. Their entire contents — including freezers, ovens, booths and lobster tanks — have already been auctioned off.

The fire sale was a precursor to a long-expected bankruptcy filing, in which Red Lobster plans to sell “substantially all of its assets.” Since March, the chain has been run by CEO Jonathan Tibus, known as a corporate-restructuring expert.

Red Lobster’s troubles include “a difficult macroeconomic environment, a bloated and underperforming restaurant footprint, failed or ill-advised strategic initiatives, and increased competition within the restaurant industry,” Tibus wrote in court documents.

Brand crisis meets ownership crises

Red Lobster, now the largest seafood chain, did not get cooked just recently. It has struggled for a decade as diners have pulled away from large casual-dining chains.

In that world, Red Lobster was one of the originals. It started in 1968 and exploded through the 1980s and 1990s, hosting generations of Americans for celebrations and dates — with many cracking their very first lobsters at its tables.

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In recent years, marked by rising inflation, Red Lobster has been losing out on both ends: to fresher, nicer, more local restaurants; and to the rising tide of cheaper, quicker spots, like Shake Shack or Surfside Taco.

And during this cultural shift, Red Lobster’s finances have floundered.

A private equity firm bought the chain ten years ago from Darden Restaurants, which owns rivals Olive Garden and LongHorn Steakhouse. The firm, Golden Gate Capital, funded the deal partly by selling Red Lobster’s real estate.

That meant the chain had to start paying rent. That’s now a major financial factor in Red Lobster’s bankruptcy filing, which asks the court to reject 108 leases, letting the company abandon those locations.

Since 2020, Red Lobster has been run by its largest shareholder: Thai Union Group, a seafood supplier also behind the Chicken of the Sea brand. And the bankruptcy filing lays much blame on Thai Union and ex-CEO Paul Kenny.

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After massive financial losses during the pandemic, followed by increases in the costs of food and wages, Thai Union pursued extensive cost-cutting at Red Lobster. The chain was run by a conveyor belt of executives; it had no CEO for a year.

The bankruptcy filing alleges that Thai Union interfered with daily operations and even pushed out two rival suppliers of breaded shrimp, securing a costlier exclusive deal for itself.

All-you-can-eat shrimp fiasco

Then came a reboot idea that turned into a jumbo disaster: Ultimate Endless Shrimp. Red Lobster took its classic promotion and made it permanent, with prices originally starting at $20.

Thai Union later cited this as the main cause of its $11 million loss that quarter. The goal was to get more people in the door, which did happen. But many diners then stayed for hours, picking at plate after plate of shrimp dishes and — critically — buying little else.

Thai Union CEO Thiraphong Chansiri later said the ordeal left him scarred.

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“Other people stop eating beef, I’m going to stop eating lobster,” he told investors.

In January, Thai Union washed its hands of Red Lobster. The owners said they would essentially abandon their stake in the chain, setting the restaurant company on a path to bankruptcy.

In this week’s Chapter 11 filing, Red Lobster says it has a prearranged bid, known as a “stalking horse” bid, from its lenders to buy out the chain, unless it receives a higher rival bid.

NPR’s Barclay Walsh contributed to this report.

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Condolences pour in from allies and neighbours as Iran mourns Ebrahim Raisi

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Condolences pour in from allies and neighbours as Iran mourns Ebrahim Raisi

Iran’s allies and neighbours have sent condolences to Tehran following the death of President Ebrahim Raisi, with the leaders of China, Russia, Venezuela and Turkey among the first to respond.

Reaction in western capitals was more muted, underscoring the Islamic republic’s divisive position in global politics, but France and the EU offered their condolences.

Iranian authorities had confirmed on Monday that Raisi and Iran’s foreign minister Hossein Amirabdollahian were killed in a helicopter crash on the previous day in a remote region in Iran’s Arasbaran Forest, near the border with Azerbaijan.

Russian President Vladimir Putin was swift to express his country’s sorrow. He praised Raisi’s “invaluable personal contribution to growing friendly relations between our countries”, adding that his Iranian counterpart had been crucial in forging a “strategic partnership” between Moscow and Tehran.

The two countries have backed the regime of President Bashar al-Assad in Syria’s more than decade-long civil war. They also have deepening military ties, with Iran providing Russia with drones and munitions for its war in Ukraine.

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Assad on Monday mourned the “painful incident and the great loss that resulted from it”.

China’s President Xi Jinping had sent a message expressing “deep sorrow on behalf of the Chinese government and people”, Beijing’s foreign ministry said. Raisi had made “significant contributions to maintaining Iran’s security and stability” and his death “deprived the Chinese people of a good friend”, Xi said.

“China will continue to support the Iranian government and people in maintaining independence, stability and development,” the statement added.

Along with Russia and China, Iran is an important ally for Venezuela as Caracas struggles to rebuild the country’s oil industry amid US sanctions. President Nicolás Maduro said he and his wife Cilia were “overwhelmed by great sadness at having to bid farewell to an exemplary person, an extraordinary world leader”.

Condolences also flooded in from across the so-called axis of resistance, a network of Iran-backed regional proxies that includes Hizbollah, Hamas, Yemen’s Houthis and the Shia militias in Iraq. 

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Hizbollah said Raisi “was to us a big brother, a strong supporter, a staunch defender of our causes . . . and a protector of the resistance movements”. It also mourned the death of Amirabdollahian, calling him a “dear brother”.

Hamas conveyed its “deepest condolences and solidarity” and mourned “the immense loss”, praising the deceased Iranian officials for their steadfast support of the Palestinian cause and resistance against Israel.

Arab states, which have a history of fraught ties with Iran, also expressed sympathy. Saudi Crown Prince Mohammed bin Salman and Sheikh Mohammed bin Zayed, president of the United Arab Emirates, were among regional powers that offered their condolences.

Saudi Arabia and the UAE have sought to de-escalate tensions with Iran in recent years.

The strong signals of support from Iran’s allies and neighbours contrasted with the subdued reaction from western capitals. Iran has endured hostile relations with the US and other western nations since the 1979 Islamic revolution. Tensions with the west have heightened over Tehran’s military support for Putin since Russia’s invasion of Ukraine and since the war between Israel and Hamas erupted after the Palestinian militant group’s October 7 attack last year.

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Iran considers Israel and the US to be its leading foes, and last month launched its first-ever direct attack on the Jewish state in response to an Israeli strike on an Iranian consulate in Damascus. Iran is also the target of swingeing and long-standing economic sanctions by the US and EU, among others related to its nuclear programme.

Western capitals and Israel will be considering the consequences for Iran’s future leadership, as Raisi was widely considered a possible successor to the country’s 85-year-old supreme leader, Ayatollah Ali Khamenei.

Israeli Prime Minister Benjamin Netanyahu’s government did not immediately give a public response to news of Raisi’s death, but opposition leader Yair Lapid said: “Iran will enter a period of instability — the strategic relations between [the US and Israel] are more important than ever.”

The White House and US state department also did not immediately issue an official response. Chuck Schumer, US Senate majority leader, said only that he had been told by US intelligence agencies that there was no evidence of foul play, NBC reported.

European Council president Charles Michel said the EU “expresses its sincere condolences for the death of President Raisi and foreign minister Amirabdollahian”.

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The French foreign ministry said France “expressed its condolences” to Iran and the families of the victims.

In Italy, Prime Minister Giorgia Meloni said: “We are in constant contact with our European and G7 allies because we are talking about an incident that is part of a particularly complex regional framework.”

She added: “I hope that the future Iranian leadership wants to commit itself to the stabilisation and pacification of the region.”

Elsewhere in the Middle East, Lebanon declared three days of mourning after Raisi’s death.

Turkey, which like the UAE has recently sought rapprochement with Tehran, also offered its condolences. “As a colleague who personally witnessed his efforts for the peace of the Iranian people and our region during his time in office, I remember [Raisi] with respect and gratitude,” said Turkish President Recep Tayyip Erdoğan.

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Reporting by Adam Samson, Maxine Kelly, Chloe Cornish, Neri Zilber, Max Seddon, Amy Kazmin, Raya Jalabi, Michael Stott and Joe Leahy

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