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According to a recent paper, the Earth is caught directly in the crosshairs of a cosmic hurricane.A swarm of nearly 100 stars, accompanied by an even greater amount of dark matter, is aimed directly at our stellar neighborhood and there's nothing we can do to stop it; in fact, the vanguard is already upon us. This sounds like a perfect summer blockbuster movie, starring The Rock and Chris Pratt, or maybe Scarlett Johansson and Charlize Theron.Except this is for real. But is it a danger? Well, actually, no. Not at all. But it's potentially incredibly fascinating, with lots of interesting scientific interconnections. So, what is really going on?The story starts last April, when the Gaia satellite announced the locations and trajectories of 2 billion stars in the vicinity of the Milky Way surrounding our sun. They released the data to the public.Scientists were then able to look at the data set to see if they could spot anything peculiar. In galaxies like the Milky Way, the most common behavior is that the stars orbit the center of the galaxy in a manner broadly similar to the planets orbiting our sun. However, there are some stars that exhibit unusual motion. About a year ago, astronomers identified some "stellar streams" passing through our celestial neighborhood.One of them, called S1 (for stream 1), consists of nearly 100 stars of similar age and composition, orbiting the Milky Way in a direction exactly opposite that of normal stars. It's kind of like a handful of cars driving the wrong way down the highway, except with a much greater distance between them and with no likelihood of a collision. These stars are spread out over a few thousand light years and they will pass through the solar system's neighborhood over the course of a few million years.Astronomers identified S1 as being part of the remnants of a dwarf galaxy that collided with the Milky Way and was consumed in an epic episode of cosmic cannibalism. Dwarf galaxies are very small, typically about 1% the mass of the Milky Way. They can orbit larger galaxies and collide with the bigger galaxy, adding their mass to the parent. This is what appears to have happened in the case of S1, although the process has taken probably a billion years.Dwarf galaxies often have a disproportionately large fraction of dark matter. Dark matter is a hypothetical and still-undiscovered form of matter that interacts only gravitationally. Scientists have proposed its existence to explain many astronomical mysteries, for example the observation that most galaxies rotate faster than can be explained by the known laws of physics and the stars and gas of which they are composed.While dark matter has not yet been observed, hypothesizing its existence is the simplest and most economical explanation for myriad astronomical mysteries. Averaged over the entire universe, dark matter is thought to be five times more prevalent than the ordinary mass of stars and gas and planets.In dwarf galaxies, the fraction of dark matter is often higher. In Fornax, a well-studied dwarf galaxy orbiting the Milky Way, researchers estimate that the dark matter is between 10 and 100 times greater than the mass found in its stars.If that number holds for S1, the dark matter of the S1 stream is passing through the Earth at a much higher velocity than the more ordinary dark matter that orbits the Milky Way -- about twice as fast. It is thought that S1 dark matter is flying through the solar system at a speed of about 550 km/s, or about 1.2 million mph. While these numbers are impressive, they are misleading. Dark matter, if it exists, is extremely diffuse and it will have no discernible effect on the solar system.Because dark matter hasn't been observed yet, these velocity numbers are speculative, although they are strongly supported by a very large body of evidence. However, the prospect of high velocity dark matter flying through the Earth has suggested an opportunity to detect it.In a paper in the prestigious journal Physical Review D, researcher Ciaran O'Hare and his collaborators calculated the possibilities of discovering dark matter using both existing and proposed dark matter detectors. They considered two varieties of dark matter particles: a very heavy kind called a WIMP (weakly interacting massive particle) and a very light kind called an axion. Because the ultimate nature of dark matter is not known, it is important to be open to all possibilities.They found that the detectors they evaluated could find WIMPs for certain ranges of the particle mass. However, when they looked at the axion possibility, it appeared the prospects were even better. Because of its light mass and the manner in which an axion would interact with the detector, the apparatus simply has a better chance of seeing the axion. (If axions exist, of course.)Experiments with names like ADMX, MADMAX and ABRACADABRA are able or will be able to search for the signatures of dark matter proposed in the recent paper. They consist of technologies that are designed to interact with axions in a strong magnetic field and convert them to ordinary microwaves or radio waves that can be easily detected.It's important to remember that the S1 stream poses no credible threat to the Earth and humanity. There is no need for an action hero to save us. However, the synergy of science is staggering. A careful catalog of nearby stars has opened the prospect of a better possibility of finding and identifying dark matter, which is one of the great unanswered mysteries of modern physics. It's an amazing time we live in, in which we can study such things.\ 5625

Albertsons wants to scoop up Rite Aid.The deal announced Tuesday will create a new company with about billion in annual sales and 4,900 stores across the country.Albertsons pharmacies will be rebranded as Rite Aid and some Rite Aids will continue to operate as stand-alone stores. Rite Aid CEO John Standley will become CEO of the new combined company.Walgreens wanted to buy up all of Rite Aid in 2015, but federal regulators nixed that agreement on antitrust grounds. In September, the two companies announced a scaled back version for nearly 2,000 of Rite Aid's stores. That left Rite Aid with around 2,600 stores.The move will allow Albertsons to become "a fully integrated one-stop-shop," Miller said in a statement.Rite Aid jumped 24% in pre-market trading.Albertsons is a privately held company and Rite Aid is public. It's not yet clear what the name of the new company will be.  904

After being cooped up for months due to COVID-19, Jason Andre is stoked to shred the curl again.This surfer, however, also has concerns about getting back to the beach.“I feel pretty trepidatious about going to any open beaches,” he said.While Andre scouts the best breaks up and down the East Coast, he’s also keeping an eye on coronavirus concerns in his home state of North Carolina.“Things are actually kind of reaching new peaks as far as infection rates and hospitalizations,” he said. “So, it’s a little weird.”Weird and potentially dangerous.With summer here and cities lifting their restrictions, more lifeguards are experiencing more challenges.“We had like 48 water rescues for the weekend,” said Cpt. Tony Wallace of the Carolina Beach Ocean Rescue team.He says strong rip currents have kept his crew busy with rescues and that COVID-19 has changed how his team now handles medical responses.“We have stopped mouth-to-mouth resuscitation,” Wallace said. “So, now we go to a bag valve mask to assist in breathing if need be.”Across the country on the Pacific Coast, lifeguards are working to protect the public and ensure social distancing.“We like to do what we call preventive action work were we direct people to safe areas on the beach before they get into trouble,” said Lt. Claude Panis of the Huntington Beach Fire Department Marine Safety Divison.He says summer is always a challenging time at the beach and that the pandemic has increased the dangers.“I think people have been locked up and they're really itching to get outside,” Panis said. “And of course, the beach is a popular destination.”Panis said when people are in trouble in the ocean the first thing to do is to stay calm and try not to panic.Back on the Carolina Coast, Andre is dealing with challenges in and out of the ocean.“We’ve had a pretty huge influx of Portuguese man-of-war lately which are really dangerous, extremely painful jellys that will sting you,” he said.Andre is looking to stay safe by avoiding marine life and large crowds.“I have a small handful of friends who I will invite to come out on the boat and we will go find a sandbar of own,” he said.Searching for safety by finding a private beach during the pandemic. 2228

Agents with the Tennessee Bureau of Investigation (TBI) have recovered two nude photographs of a woman taken by Metro Nashville Police Sergeant Rob Forrest while he was being paid by taxpayers to protect Nashville Mayor Megan Barry.That detail is contained in a new search warrant filed Wednesday, seeking permission from a judge to search Barry's mobile phone.TBI agent Joshua Savely said in his affidavit that the face of the woman is not visible in the photographs recovered from Metro Police emails.Those photos appear to have been taken on Forrest's city-issued iPhone, then deleted, the affidavit says.Still, Savley wrote that a separate picture recovered from Forrest's phone shows Barry wearing clothing similar to items visible in one of the nude photos. Barry can also be seen carrying a purse similar to one that appears in another nude picture."Your affiant believes that probable cause exists to show that Rob Forrest used a department issued iPhone 6s Plus while on duty," Savley wrote."It will also show that on May 15, 2017, and on October 18, 2017, he used this phone to photograph a nude or partially nude female. It will also show that Rob Forrest's timecards report that he was working while these photographs were taken."Your affiant believes probable cause exists to show that Rob Forrest was indeed not working at the time [those photographs] were taken but was rather participating in the affair with Megan Barry at these time."Forrest submitted his retirement to the Metro Nashville Police Department on Jan. 31, the same say that Barry admitted that she and Forrest had had an affair.  Search Warrant Affidavits (PDF) Search Warrant Affidavits (Text) 1718

ADRIAN, Mich. -- Police are investigating after an 85-year-old man was stabbed to death at a Meijer store in Michigan Wednesday afternoon. The suspect was arrested after a person with a concealed pistol license (CPL) intervened and held him at gunpoint until police arrived.The deadly incident happened around 12:30 p.m. Much of the details surrounding the incident are still being investigated.However, police say the victim was stabbed multiple times in the head and neck, and was pronounced dead at the scene. The victim was a resident of Lenawee County. The suspect, who is in police custody, is a 29-year-old resident of Adrian.If you have information on what happened, contact Det. Sgt. LaMar Rufner at 517-264-4808.This story was originally published by Cara Ball at WXYZ. 787