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At 3 p.m. ET on Monday, November 26, a group of researchers will be really sweating. The NASA InSight spacecraft will try to land on Mars.After six months of flight, the lander component of the probe will detach itself from the cruise stage and head into the atmosphere. The lander component initially looks a fair bit like the re-entry capsule used in the 1960s and 1970s for the Apollo moon missions -- sort of conical, with a smooth and flat bottom. That bottom is a crucial heat shield that is designed to protect the probe as it passes through the thin Martian atmosphere.The landing is a devilishly difficult feat. The landing capsule has to batter its way through the atmosphere. It will fly through the Martian air at an initial speed of 12,300 mph, and it must hit the atmosphere at an angle of precisely 12 degrees. Any shallower, and the probe will bounce off into deep space. Any steeper, and the probe will burn itself up in a spectacular and fiery death. The probe will first touch the atmosphere six minutes and 45 seconds before landing. During this phase, it will experience acceleration 12 times that of the Earth's gravity. Were the probe a 150-pound human, during the flaming descent, it would weigh nearly a ton.About 3? minutes after the probe hits the atmosphere, a parachute will deploy, slowing down the probe even more. Fifteen seconds later, explosives will blow the heat shield off, exposing the actual InSight probe hidden inside. Ten seconds after the heat shield falls away, the probe will extend its legs, much like an airplane extends its wheels before touching down.The probe will fall for an additional two minutes attached to the parachute and protected by its conical shell. About 45 seconds before InSight lands, it will drop out of the shell and fall toward the surface. As soon as it leaves the shell, its landing rockets will ignite.The actual InSight probe looks a little bit like the Apollo moon lander, with three legs to support it and a boxy top. The rockets will slow it further and stop any remaining horizontal motion. Then, about 15 seconds before touchdown, the InSight probe will descend at a speed of 8 feet per second, before hopefully touching down gently on the Martian surface.The entire landing sequence will take about seven minutes to occur. A radio signal from Mars to Earth currently takes about eight minutes and seven seconds to get here. So the complete landing process will take place before we find out if it was successful. It will be done automatically, entirely by the probe itself. For the scientists and engineers who designed InSight, this is called "seven minutes of terror."And they are right to be worried. Mars is a graveyard of failed probes. There have been 44 attempts by various national space agencies to land on Mars. Eighteen have been successful. Twenty-three have not. Three have achieved orbit but failed at a landing.So, what does InSight hope to achieve? Well, as it happens, a lot. But it's different than the intrepid Curiosity probe, which NASA landed in 2012. InSight will not move around. Instead, it will stay put and tell us of the interior of Mars.One thing it will do is emit radio waves that we can monitor on Earth. By making careful measurements of how the frequency of the radio waves change, we will be able to measure the degree to which Mars wobbles as it rotates. That will tell us something about the core of the planet, specifically its makeup and information on the degree to which it is molten.InSight will also deploy a seismometer to listen for marsquakes (like earthquakes, but Martian-style) and for impacts of meteors on the planet. Information gleaned from the waves the seismometer detects will tell us more about the planet's interior.The third thing InSight will do is to dig below the planet's surface. Using a jackhammer, the probe will drill down 5 meters (16 feet) into the planet and, basically, it will take the planet's temperature.There are many reasons this is interesting. Taking the temperature at that depth will allow planetary scientists to determine how much heat is escaping from Mars. More broadly, this measurement will allow a clear determination of the temperature of the planet much closer to the core.This information will tell us a lot about how Mars formed, which, in turn, will add to the information of how rocky planets, including our own Earth, typically develop.And if you're more of an explorer kind of person and not so interested in Martian geology, it will also tell us how warm the planet is at modest depths, which will tell us if there is any chance of liquid water on the planet. Perhaps obviously, if the Martian subsurface is warm enough, any buried water will be in liquid form and not ice. Finding liquid water would be the key discovery that would make Martian exploration relatively easy. A relatively recent possible discovery of a buried Martian lake was promising, but the data was not conclusive. Knowing that the ground is warm would be very comforting to possible future explorers.Exploring the solar system is the first step toward exploring the stars. The InSight probe will give us --well -- insight into whether this is something that humanity will achieve in the foreseeable future.And maybe Elon Musk's bet on him getting to Mars will become true. 5329

As the holiday season approaches, many companies are in need of temporary employees. Although these jobs are generally considered temporary, some retailers say jobs positions could lead into permanent positions. Here is a look at who is hiring:Best BuyElectronic retailer Best Buy said it will hire an unspecified number of temporary employees for the holidays. The company will host job fairs in nearly a dozen cities on Oct. 10. Also, the retailer will have on-site job interviews on Oct. 10 and 11 nationwide. To reserve a spot for an interview, click here. Best Buy said that 30 percent of its full-time employees began as seasonal workers.Dick's Sporting GoodsTaking a page from the sports world, Dick’s Sporting Goods is hosting a “National Signing Day” on October 16 to fill 8,000 positions nationwide. Dick’s said applicants are encouraged to first apply online at dicks.com/jobs,GapGap has more than 2,000 seasonal positions for this year. To apply, click here.Kohl's Kohl's said it plans to hire 90,000 seasonal employees this year. Kohl's said positions are available at 11,000 locations nationwide. For more info, click here. Macy'sMacy's said it plans to hire 80,000 seasonal employees this year. Among the more interesting opportunities, the company plans to hire 1,000 people to assist with the company's Thanksgiving Day parade. Macy's also said its hosting on-site interviews on Thursday, October 24, 2019, from 11 a.m. – 7 p.m. For more info, click here.The company said that in 2018, 8,000 seasonal employees became permanent workers.RadialLooking for a more behind the scenes position? Radial is looking to hire 21,000 seasonal employees for the holidays. Radial provides fulfillment and customer care services for retailers nationwide. For more info, click here.TargetTarget will do two rounds of job fairs for potential employees. The first round of job interviews will be from Oct. 11 to 13 and the second from Nov. 2 to 3. Target plans to hire more than 130,000 seasonal employees. Target says that minimum pay for employees will be . For more information, click here. UPS UPS said it plans on hiring 100,000 people for the holidays. UPS says that nearly one third of its workforce started as seasonal employees. The majority of positions are for package handlers, drivers and driver-helpers. For more info, click here. 1-800 Flowers1-800 Flowers said it plans to hire 8,000 seasonal employees. For details, click here. 2454

As vaccinations get underway in the United Kingdom, United States and other rich countries who could afford to pre-purchase doses of the COVID-19 vaccines, researchers warn that about a quarter of the world’s population will be unable to be vaccinated until 2022.There are 13 vaccine manufacturers working on coronavirus vaccines, and they are capable of producing around 6 billion courses of vaccine by the end of 2021.“Just over half (51%) of these doses will go to high income countries, which represent 14% of the world’s population,” researchers from the Johns Hopkins Bloomberg School of Public Health wrote in their report, published in the British Medical Journal."Of the 13 manufacturers, only six have sold to low and middle-income countries,” they noted.At the time of the report, the U.S. had reserved 800 million doses of the vaccine. Japan and Australia, which account for fewer than 1% of the world’s COVID-19 cases, have reserved and potential options to get 1 billion doses.“Even if all 13 of these vaccine manufacturers were to succeed in reaching their maximum production capacity, at least a fifth of the world’s population would not have access to vaccines until 2022,” researchers noted.Covax, a global effort organized by the World Health Organization, had made initial purchases of 300 million vaccine doses. Covax is working to create equitable access to COVID-19 tests, treatments and vaccines for all countries. President Donald Trump’s administration said they would not participate in the effort."This study provides an overview of how high-income countries have secured future supplies of COVID-19 vaccines, but that access for the rest of the world is uncertain," the researchers concluded. "Governments and manufacturers might provide much-needed assurances for the equitable allocation of COVID-19 vaccines through greater transparency and accountability over these arrangements." 1921

Authorities are currently hunting a suspect in central Tennessee after a Dickson County sheriff's deputy was shot and killed on Wednesday. The suspect has been added to the Tennessee Bureau of Investigation's Most Wanted list.Officials are searching for 31-year-old Steven Joshua Wiggins west of Nashville in connection with the death of Sgt. Daniel Baker with the Dickson County Sheriff's Office.Baker was killed Wednesday morning after responding to a call about a suspicious vehicle. He was found inside his patrol car. Wiggins, who has been arrested for aggravated assault and misdemeanor vandalism in the past, is considered to be armed and dangerous. He’s been added to the Tennessee Bureau of Investigation’s Top 10 Most Wanted list. The reward for his capture has been increased to ,500.   843

ATLANTA (AP) — Atlanta police have accused a suspect of felony murder and aggravated assault in a shooting that killed an 8-year-old girl near the site of an earlier police shooting.Police said Wednesday that they issued warrants a day earlier for 19-year-old Julian Conley in the slaying of Secoriea Turner. Conley's attorney, Jackie Patterson, said Conley turned himself in Wednesday. Patterson says Conley was peacefully protesting and witnessed the shooting but did not open fire himself. Secoriea was fatally shot on the Fourth of July while riding in an SUV with her mother and another adult near the Wendy's restaurant where Rayshard Brooks, a 27-year-old Black man, was killed by a white police officer on June 12. 730

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