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A school trip for the eighth grade Mentor, Ohio Public Schools students to Washington D.C. was set and ready to go. Students were excited, bags were packed, lots of money was paid. But on Tuesday — the day before the trip — Discovery Tours, the company contracted by the school district to handle the trip, canceled. What's 511 students multiplied by 5 each? That's 2,505 paid.Discovery Tours told Mentor Public Schools it had to cancel the trip because the company was unable to receive final confirmation for the hotel rooms. The school district said it contacted the hotel itself to get more information."We were told by hotel management that, under advice from the hotel's legal counsel, all they could disclose to us is: Discovery Tours was unable to meet the contractual obligations," Superintendent Bill Porter wrote in a letter to parents.However, the school district said Discovery Tours told them otherwise. But the superintendent said even if the district was able to secure the hotel rooms itself, it wouldn't feel comfortable entrusting the travel company with its students."I am sure you are feeling angry as you read this, as all of us have been since we received the news late this afternoon," Porter wrote. "We know this is an educational experience students look forward to for years prior to 8th grade that is being taken from them for no apparent reason."Porter said the middle school principals will bring all eighth graders together on Wednesday to discuss the situation, and school will be in session as usual.Mentor Public Schools said it is also working to address the financial implications of the cancellation. "Refunds for the trip are undoubtedly on everyone's minds and at this time, we do not have full explanations yet, but I can assure you, we will work diligently to secure restitution," the letter said.Lots of eighth graders are going to bed with sad faces Tuesday night. 1956

ALPINE, Calif. (KGTV) -- A neighbor is describing a man's erratic behavior before deputies shot and killed him at an apartment complex in Alpine."It was so scary. Words can't describe it," said Kathryn. Kathryn says the sequence of events began around 2:15 pm. Monday in the Elan Summit apartments with a neighbor acting strangely. 339

After an undocumented immigrant was arrested Tuesday in the presumed death of Mollie Tibbetts, President Donald Trump and other Republican lawmakers blamed the tragedy on the nation's immigration laws.Cristhian Bahena Rivera, 24, is being held on a first-degree murder charge in the case of Tibbetts, a 20-year-old University of Iowa college student who was last seen jogging in Brooklyn, east of Des Moines, more than five weeks ago.He faces life in prison without parole if convicted. 494

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

ALPINE, Calif. (KGTV) -- A man has died following a deputy-involved shooting in Alpine Monday afternoon.  The man's family later identified him as Daniel Ayala. According to the San Diego County Sheriff's Department, deputies shot Ayala at an apartment complex on the 2600 block of Alpine Boulevard around 3 p.m. during a confrontation.No deputies were injured, sheriff's officials said.According to Lt. Michael Blevins, dispatchers had received several 911 calls reporting a man yelling in the apartment complex. Blevins said at one point he made statements threatening to kill people. A witness told 10News, Ayala had pounded on his door, yelling incoherently.When deputies arrived they say they went up to Ayala's apartment."He exited the apartment with a knife in his hand and advanced towards the deputies," said Lt. Blevins.That's when the deputies opened fire. Blevins said more than one deputy fired a gun, though he said they were still investigating exactly who discharged their weapon and how many shots were fired. 1064

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