梅州怀孕三个月打胎的价格梅州治疗霉菌阴道炎去哪家医院好,梅州怀孕多少天打胎,梅州看女性疾病的医院哪家好,梅州白带发黄有异味怎样治疗,梅州有关尿道炎治疗,梅州尿道炎在线咨询,梅州做无痛人流有几种方法

A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.The object, nicknamed 'Oumuamua, meaning "a messenger that reaches out from the distant past" in Hawaiian, was first discovered in October 2017 by the Pan-STARRS 1 telescope in Hawaii.Since its discovery, scientists have been at odds to explain its unusual features and precise origins, with researchers first calling it a comet and then an asteroid, before finally deeming it the first of its kind: a new class of "interstellar objects."Now, a new paper by researchers at the Harvard Smithsonian Center for Astrophysics raises the possibility that the elongated dark-red object, which is 10 times as long as it is wide and traveling at speeds of 196,000 mph, might have an "artificial origin.""'Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization," they wrote in the paper, which has been submitted to the Astrophysical Journal Letters.The theory is based on the object's "excess acceleration," or its unexpected boost in speed as it traveled through and ultimately out of our solar system in January 2018."Considering an artificial origin, one possibility is that 'Oumuamua is a light sail, floating in interstellar space as a debris from an advanced technological equipment," wrote the paper's authors, suggesting that the object could be propelled by solar radiation.The paper, written by Abraham Loeb, professor and chair of astronomy, and Shmuel Bialy, a postdoctoral scholar, at the Harvard Smithsonian Center for Astrophysics, points out that comparable light-sails already exist on earth."Light-sails with similar dimensions have been designed and constructed by our own civilization, including the IKAROS project and the Starshot Initiative. The light-sail technology might be abundantly used for transportation of cargos between planets or between stars."In the paper, the pair theorize that the object's high speed and its unusual trajectory could be the result of it no longer being operational."This would account for the various anomalies of 'Oumuamua, such as the unusual geometry inferred from its light-curve, its low thermal emission, suggesting high reflectivity, and its deviation from a Keplerian orbit without any sign of a cometary tail or spin-up torques."'Oumuamua is the first object ever seen in our solar system that is known to have originated elsewhere.At first, astronomers thought the rapidly moving faint light was a regular comet or an asteroid that had originated in our solar system.Comets, in particular, are known to speed-up due to a process known as "outgassing," in which the sun heats up the surface of the icy comet, releasing melted gas. But 'Oumuamua didn't have a "coma," the atmosphere and dust that surrounds comets as they melt.Multiple telescopes focused on the object for three nights to determine what it was before it moved out of sight. 3063

A new survey shows the COVID-19 pandemic is giving people more faith in science. 3M's State of Science Index was encouraging for scientists and medical professionals, but the results also showed a lack of diversity is a major obstacle in the fields of Science, Technology Engineering and Math or STEM."They did the survey in 2019 and when they came to release the information now in 2020, obviously this whole pandemic had occurred and so they wanted to see if the answers and results had changed. So, they ran the survey again, very quickly. What they found was that this pandemic pulse or the information they found in 2020 in the middle of the pandemic has been just incredible," said Dr. Kate Biberdorf, an Associate Professor at the University of Texas at Austin and a 3M partner.Dr. Biberdorf says amid the pandemic, with scientific research and discoveries front and center, 89 percent of their respondents said they trust science. Pre-pandemic, Dr. Biberdorf says just 24 percent of people said they would speak up and advocate for science. Now, 54 percent said they would. A big difference in less than a year."The main things that just keep standing out to me is that our skepticism is down, our trust is up. We are leaning towards our experts, we’re talking to our scientists," said Dr. Biberdorf.However, the 3M State of Science Index also showed a large portion of Americans were discouraged from getting into STEM-related careers. "One of the questions we asked was, 'Have you ever been discouraged to pursue STEM in any way?' And what we noticed was there was a really interesting trend when it came to our age demographic," said Dr. Biberdorf.Results showed 9 percent of Baby Boomers were discouraged, 24 percent of millennials and 28 percent of Generation Z Americans, which is an upward trend. So, 3M asked why they were discouraged."Globally, the number one answer was just a lack of access to science classes. They just don't have access, they can’t get the acid, they can’t get the science kit. But in the United States, of those who were discouraged to pursue STEM, what we noticed was that our number one answer was inequalities due to gender, race and ethnicity, so that is glaring," said Dr. Biberdorf.Boukham Sriri-Perez is a high school physics teacher at Duncan Polytechnical High School in Fresno, CA. "The majority of my students in my AP Physics class are male and I have very few female students. Last year, I only had one. I believe that it is my responsibility, that I have to be really intentional about how I teach my female students in the class," said Sriri Perez. She says she tries to encourage many of her female students to give them the confidence to go into physics or other science fields and make a huge difference in the world. Sriri-Perez works for Fresno Unified School District, the same district she attended growing up. Sriri-Perez gets emotional recalling how influential and inspiring her own high school science teachers were, but says there was a lot she battled to get to where she is today."However, there’s one piece that I think I had to learn on my own as a female student and as a minority and as a refugee, is that I live in two different cultures," said Sriri-Perez. A culture that she says didn't see women in STEM-related fields. Sriri-Perez says educators can play a huge role in encouraging future STEM leaders who are minorities and women. 3416

A police officer in Prince George's County, Maryland, was charged this week with raping a woman during a traffic stop. He's pleaded not guilty, but it's a disturbing headline — even more disturbing when you consider there are hundreds more like him.Yes, hundreds. According to research from Bowling Green State University, police officers in the US were charged with forcible rape 405 times between 2005 and 2013. That's an average of 45 a year. Forcible fondling was more common, with 636 instances. 508

A pharmaceutical company is recalling dozens of medications for infants and young children that are used to treat ailments like bed wetting, chicken pox and colic.According to the FDA, King Bio voluntarily issued a recall for the medication due to a possible microbial contamination.The products were sold nationwide between August 2017 and July 2018.Customers currently in possession of affected product should discontinue its use immediately and contact King Bio by email or call the company at 866-298-2740. The company also says it is notifying distributors and customers by letter.If children have experienced any issues with taking the medication, their guardians should contact a physician.So far, King Bio says it has not received any reports of injury or illness related to the recall.Find out more about the affected products below. 870

A proposed act that would make it illegal in San Francisco to make a 911 call based on another person's race or ethnicity is one step closed to becoming law.The San Francisco Board of Supervisors unanimously passed the CAREN Act on its first read on Tuesday.Supervisor Shamann Walton proposed the Caution Against Racially Exploitative Non-Emergencies — or "CAREN" — Act in July. The name is a play on the online trend of labeling women caught making problematic or racist statements in viral videos as "Karens."The law would make it illegal to call 911 with the "specific intent to discriminate over someone's race, ethnicity, national origin, place of birth, sexual orientation, gender identity or religion," according to KPIX-TV in San Francisco.According to CNN, Tuesday's vote was passed unanimously by all city supervisors on the first read. The board will vote on the proposal again next week, and if passed, it will be sent to the desk of San Francisco Mayor London Breed, who could then sign it into law.A similar law is currently making its way through the California state legislature. AB 1550, which would outlaw discriminatory 911 calls throughout the whole state, has passed California State Assembly and is in committee in the state senate.Walton proposed the law in July after several viral videos sparked outrage about racially-based 911 calls across the country. In June, a man's recording of a white couple calling the police on him for chalking the words "Black Lives Matter" on his rented home went viral. The couple later issued an apology. In May, a white woman called police on a Black man who was birdwatching in Central Park after he asked that she put a leash on her dog. That woman was charged with false reporting earlier this week. 1768