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June 25, 2014

NASA's Chandra X-ray observatory has found a mysterious X-ray signal that astronomers are speculating could signal the presence of dark matter some 240 million light years away from Earth.

A leading theory, NASA reports, is that the X-rays are a result of decaying "sterile neutrinos," which are particles that could potentially produce dark matter. Astronomers believe dark matter accounts for 85 percent of all matter in the universe, but dark matter does not emit or absorb light as does the "normal" matter in planets, stars, and galaxies, so its detection is much more difficult.

NASA notes that normal matter may also have created the emission line, which appeared in the Perseus galaxy cluster, but astronomers are excited at the prospect that the sterile neutrinos may be at play. The scientists' next step will be combining the data with results from other missions to see if the same X-ray signal appears in other galaxy clusters. Thus far, the line has also been found in 73 other galaxy clusters using NASA's XMM-Newton.

"We know that the dark matter explanation is a long shot, but the pay-off would be huge if we're right," Esra Bulbul, leader of the study and a fellow at the Harvard-Smithsonian Center for Astrophysics, told NASA. "We're going to keep testing this interpretation and see where it takes us."

Astronomers have yet to determine what caused the emission, but for now, check out an image of the signal below. --Meghan DeMaria

12:31 p.m. ET

Sen. John McCain (R-Ariz.) weighed in on President Trump's standoff with North Korea Sunday in an interview with CNN's Jake Tapper, suggesting the situation "could be a Cuban Missile Crisis in slow motion."

McCain said he would prefer China "put the brakes on this," but would not take U.S. military intervention off the table. "This is very serious. Their capabilities of firing artillery on Seoul is absolutely real," he said. "And this, again, is why we have to bring every pressure to bear. And the major lever on North Korea today, and maybe the only lever, is China."

"But to say you absolutely rule out that option, of course, would be foolish," McCain continued. "But it has to be the ultimate last option." Watch an excerpt of his comments below, and see this analysis from The Week's Harry J. Kazianis for a more measured look at Pyongyang's capabilities. Bonnie Kristian

11:09 a.m. ET
Ted Aljibe/Getty Images

President Trump has invited controversial Filipino President Rodrigo Duterte to Washington to reaffirm the U.S.-Philippines alliance, the White House said Saturday. The two leaders spoke by phone, and Trump "enjoyed the conversation," expressing his belief that the two nations are "now heading in a very positive direction."

A statement from Duterte's office was similarly friendly. "The discussion that transpired between the presidents was warm, with President Trump expressing his understanding and appreciation of the challenges facing the Philippine president, especially on the matter of dangerous drugs," Duterte's camp said.

Duterte has come under broad criticism for his brutal prosecution of the drug war, which includes encouragement of extrajudicial killings. "My order is shoot to kill you," he notoriously said of drug dealers. "I don't care about human rights, you'd better believe me." Bonnie Kristian

10:59 a.m. ET

In an interview with Face the Nation on CBS airing Sunday, President Trump said, "I don't know. I mean, we'll see," when asked if another nuclear test by North Korea would prompt him to choose military intervention against Pyongyang. "I would not be happy," Trump said of a hypothetical test, "If he does a nuclear test I would not be happy. And I can tell you also that the president of China, who is a very respected man, won't be happy either."

Trump was speaking in response to Saturday's failed missile test, in which North Korea unsuccessfully fired a ballistic missile into the Sea of Japan. Pressed with the same question while touring a factory in Pennsylvania Saturday, Trump was similarly vague. "You'll soon find out, won't you?" he said. "You'll soon find out."

Also on Saturday, National Security Adviser H.R. McMaster reaffirmed the United States' commitment to pay for South Korea's THAAD missile defense system, comments that apparently contradict President Trump's recent suggestion that Seoul should foot the $1 billion bill.

Watch Trump's Face the Nation comments in context below. Bonnie Kristian

10:45 a.m. ET
Jon Durr/Getty Images

Severe storms tore through Southeast and Midwest states including Missouri, Arkansas, and Texas over the weekend, leaving at least seven people dead and dozens more injured. Five people were killed by tornadoes that struck near Dallas, Texas, and 54 more people were hospitalized with weather-related injuries.

Parts of Missouri and Arkansas have been deluged in up to 11 inches of rain, closing at least 150 roads in Missouri alone. One woman was killed when her vehicle submerged, and another woman died when a tree fell on her home.

About 30 million Americans remain subject to flash flood warnings as heavy rain is expected to continue in the region on Sunday. Bonnie Kristian

8:34 a.m. ET

The White House Correspondents' Dinner carried on in President Trump's absence Saturday evening, and Reuters' Jeff Mason, president of the White House Correspondents' Association, took the occasion to push back against Trump's "fake news" accusations. "We are not fake news, we are not failing news organizations, and we are not the enemy of the American people," Mason said. "Freedom of the press is a building block of our democracy. Undermining that by seeking to delegitimize journalists is dangerous to a healthy republic."

The dinner's host was The Daily Show's Hasan Minhaj, who did address free speech — "Only in America can a first generation Indian American Muslim kid get on this stage and make fun of the president!" — but spent much of his time skewering the absent Trump, "the elephant not in the room."

"Trump is liar-in-chief, and remember, you guys are public enemy number one," Minhaj said. "You are his biggest enemy. Journalists. ISIS. Normal-length ties. And somehow, you're the bad guys."

Full Frontal's Samantha Bee held a competing event, "Not the White House Correspondents' Dinner," addressing similar themes. Watch Minhaj's full speech below. Bonnie Kristian

8:12 a.m. ET

President Trump celebrated his 100th day in office with a cheering rally crowd in Harrisburg, Pennsylvania, Saturday evening, skipping the White House Correspondents' Dinner in favor of a return to the campaign trail.

"I could not possibly be more thrilled than to be more than 100 miles away from Washington's swamp, spending my evening with all of you and with a much, much larger crowd and much better people," he told supporters in a speech ranging from North Korea to ObamaCare to Hillary Clinton. "The media deserves a very big, fat, failing grade."

Trump reiterated his trademark promise to build an enormous wall along the southern border — "Don't even worry about it," he assured his audience — and mocked the "fake news" people "trapped" at the "very, very boring" dinner in Washington. Watch an excerpt of his comments below. Bonnie Kristian

April 29, 2017
Jason Kempin/Getty Images

President Trump announced last weekend he would "be holding a BIG rally in Pennsylvania" to mark his first 100 days in office, an event scheduled for Saturday that also gives the president alternative plans to the White House Correspondents' Dinner he has declined to attend.

The host of this year's dinner is The Daily Show's Hasan Minhaj, whom Reuters' Jeff Mason, president of the White House Correspondents' Association, asked to focus on "the importance of a free press" instead of simply taking the opportunity to "roast the president in absentia." Mason added, "That doesn't mean there can't be some jokes about the president, but just that there should be some jokes on the press."

The dinner in Washington, D.C., and the rally in Harrisburg, Pennsylvania, both begin at 7:30 p.m. and will be streamed live online. Watch the dinner via C-SPAN and the rally via CBS News. Bonnie Kristian

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