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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

Above all we thank the Connecticut State Police and the New Canaan Police Department, as well as the assisting local departments, for their tireless commitment and diligent, painstaking work that have led to these arrests. Although we are relieved that the wait for these charges is over, for us there is no sense of closure. Nothing can bring Jennifer back. We miss her every day and will forever mourn her loss.We believe the arrest warrants will speak for themselves, and we ask that you please respect our privacy during this time. Thank you. 554

A 6th-grade student at Dr. David L. Anderson Middle School in Martin County, Florida has been charged with a misdemeanor after he simulated a shooting, pretending to have a semi-automatic weapon.The Martin County Sheriff's Office said students told teachers that the 6th-grade student allegedly said he had a gun for protection. A school resource officer searched the student and his backpack and did not find a weapon. The child was allowed back to class, but a deputy said, in class, the student put his hands up as if he was firing a semi-automatic weapon and began to make pop noises. The Martin County Sheriff's Office was called out to the school and the student was arrested for disrupting a school function. He is charged with a misdemeanor. No weapon was found. Parents were notified that there was an incident."It was very unnerving and disturbing and once again it's the kids that are suffering and it freaked me out after dropping off my son today, giving him a kiss and knowing how the other parents feel about yesterday and that the kids aren't here. It's heartbreaking," said Shari Sullivan, whose son is in 7th grade. MESSAGE FROM ASSISTANT PRINCIPAL TO PARENTS:Good afternoon, this is Joe Flanagan, Asst Principal of Anderson Middle School.  I have an important message to share with you.  Today, school officials worked in partnership with the Martin County Sheriff’s Office as we became aware that one of our students made a non-credible threat to his classmates and teacher related to the recent tragedy.  The student is in custody of the Martin County Sheriff’s Office and is being charged with a misdemeanor for disruption of a school function. 1709

AGOURA HILLS, Calif. (KGTV) — Residents in the area where the Holy Fire scorched thousands of acres in August have been ordered to evacuate as rains hit Southern California.Rainfall Thursday brought threats of flash floods and mudslides to areas impacted by the fire in Orange and Riverside counties. Residents were told they "must go now" on the Riverside County information website. Those areas ordered to evacuate include:AmoroseAlberhillGlen Ivy AGlen Ivy BGlen EdenGraceHorsethief ALaguna AMatriMcVicker ARiceWithrow AMap via rivcoready.org.An evacuation center has been set up at Temescal Canyon High School (28755 El Toro Road in Lake Elsinore) and evacuees can bring large and small animals there and to San Jacinto Valley Animal Campus (581 S. Grand Ave., San Jacinto).A storm system moving through Southern California Thursday is forecasted to dump as much as half an inch to two inches of rain in the region. Video posted on Twitter by Cal Fire Riverside Thursday showed heavy debris flows through the area of Rice Canyon and Glen Ivy Road.Rice canyon at 10:30 a.m. 11/29/2018 #HolyFloodWatch #RivCoReady #CtyLakeElsinore pic.twitter.com/XiZZVh9mfV— CAL FIRE Riverside (@CALFIRERRU) November 29, 2018 1219

After long resisting wearing a mask in public, President Donald Trump says he thinks it makes him look like the Lone Ranger — and he likes it. Trump told Fox Business on Wednesday that he's “all for masks.” Trump’s comments came a day after Republican lawmakers suggested that the president should wear a mask in public to set a good example for Americans. Trump has long resisted wearing a mask in public. In early April, the Centers for Disease Control and Prevention issued a recommendation that people wear cloth face coverings in public settings where other social distancing measures were difficult to maintain.“If I were in a tight situation with people, I would absolutely,” Trump said in an interview with Fox Business. 736