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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 our country works to rebound, we're helping you manage the pressure as the pandemic is shifting caregiving responsibilities.More millennials are taking on this responsibility now. They're becoming a greater percentage of what's known as the "sandwich generation." Those are people who are caring for both their own kids and their aging parents.New numbers from insurance company New York Life show a third of millennials are doing this now.“We're not replacing the typical 49-year-old woman who's the family caregiver. She's still doing it, but the need is so great that more and more young people are called into the role as well and that's going to continue well after the COVID pandemic,” said John Schall, CEO of the Caregiver Action Network.Nearly half of the so-called "sandwich generation" expect to be a caregiver in some capacity for six or more years.The added financial strain is one concern. Schall says out of pocket expenses can be about a thousand dollars a month.More than half of these caregivers say they're spending more than usual per month to care for others as a result of the pandemic. That means they're contributing less to their savings and their retirement.There's also the concern about the mental toll.“With millennial generation caregivers, you may not be thinking about depression, you know, at that age, but the fact is the sheer stress of the role of being a family caregiver increases that risk of depression twice as often,” said Schall.If you are feeling overwhelmed, the caregiver help desk from the Caregiver Action Network can be one place to turn. You can call them free of charge at 855-227-3640. 1648

Ashley Judd, Salma Hayek and Annabella Sciorra took the stage on Oscar night to deliver a message to Hollywood and beyond: Time's up.The three women are among the more than 60 who have accused the disgraced film producer of sexual assault or harassment that took place over the course of three decades. Weinstein has consistently denied all accusations of nonconsensual sex, but the allegations against him sparked a reckoning in Hollywood that took center stage at the Dolby Theater during Sunday's Academy Awards.The woman stood together and spoke about the #MeToo movement that has swept Hollywood over the past several months and pointed out that this is not an issue that solely affects the movie industry.  725

At a rally on Sunday, President Donald Trump said that he might fire Dr. Anthony Fauci, his administration's top infectious disease expert, shortly after Tuesday's election.At a rally in Opa-Locka, Florida on Sunday, supporters broke into a "Fire Fauci!" chant as Trump discussed the COVID-19 pandemic."Don't tell anyone, but let me wait 'til a little bit after the election," Trump said.The comments marked the first time that Trump has publicly indicated that he may fire Fauci, who has been the head of the National Institute for Allergies and Infectious Diseases since 1984.Fauci, a member of the White House's corornavirus task force, has consistently been the most plain-spoken Trump administration official when speaking about the challenges the country faces amid the pandemic.Trump has publicly criticized Fauci throughout the pandemic. In October, with COVID-19 cases on the rise, Trump tweeted an attack on Fauci. Days later, during a campaign call, Trump called Fauci a "disaster" and said he and other health experts were "idiots."Polling has shown that Americans consistently believe that they trust Fauci more than Trump when it comes to handling COVID-19.In the past, Fauci has implied that the White House has limited the number of media appearances he can make, and has also said an ad by the Trump campaign took him out of context. 1358

Authorities in India have decided to hold off retrieving the body of the American national feared killed on North Sentinel Island amid concerns about a possible confrontation with the tribe that lives there.John Allen Chau is believed to have been killed by Sentinelese tribespeople after he visited their island home in the Andaman and Nicobar archipelago in November, breaching local laws strictly prohibiting contact with the isolated people.Indian police say Chau found local fishermen who agreed to take him near the island, before using a canoe the rest of the way. Days later, the fishermen -- who have since been arrested for facilitating his trip -- say they saw the tribespeople dragging his body around the island."We want to avoid direct confrontation with the tribespeople," Dependra Pathak, director general of police of the Andaman and Nicobar islands, told CNN when asked about the latest efforts to retrieve Chau's body. "We do not want to go there and create an unhappy situation."The decision to avoid a direct confrontation with the isolated tribe came after a series of meetings and reconnaissance trips made by the officials. Anthropologists and tribal experts were also consulted.By Sunday, authorities had mapped out the area with the help of the fishermen and observed several members of the tribe walking around the area where eyewitnesses claim to have seen Chau's body dragged and buried.However, despite ruling out any immediate attempts to land on the island, local police would not categorically rule out retrieving the body at a future date. "We are working on it. We'll firm up a plan very soon," said Pathak. 1650

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