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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

ATLANTA — Georgia's legislature on Tuesday passed hate crimes legislation deemed essential by state leaders, sending the measure to Gov. Brian Kemp's desk.Georgia is currently one of four states in the U.S. without hate crime laws.The price Republicans exacted for moving that legislation forward was the simultaneous passage of a bill that would mandate penalties for crimes targeting police and other first responders.The action comes after Senate Republicans had added police as a protected class to the hate crimes legislation last week, but then moved those protections to a separate bill in a deal between the parties.Kemp's office said in a statement that he'd sign the hate crimes bill, pending a legal review.The bill's passage comes amid weeks-long protests against systemic racism throughout the country. The protests were sparked by the death of George Floyd, who died in police custody in Minneapolis after bystander video showed an officer kneeling on his neck for more than eight minutes.The passage also comes weeks after three arrests were made in connection with the shooting death of Ahmaud Arbery. The 25-year-old Arbery was killed in Burnswick, Georgia in February, and his case changed jurisdictions several times due to one of the suspect's connections with the local District Attorney's office. It wasn't until days after a video of the altercation leaked to the public in May that two of the men, Gregory and Travis McMichael, were arrested and charged with murder. A third man, William "Roddy" Bryan, was also charged with murder a few weeks later. 1582

ATLANTA (AP) — Georgia’s governor, Brian Kemp, is explicitly banning the state's cities and counties from ordering people to wear masks in public places.He’s voiding orders that at least 15 local governments across the state had adopted even though Kemp had earlier said cities and counties had no power to order masks.The Republican governor has instead been trying to encourage voluntary mask wearing.An increasing number of other states have ordered residents to wear masks in public, including Alabama, which announced such a ban Wednesday.Kemp’s move is likely to infuriate local officials in communities that had acted, including Atlanta, Augusta, Savannah, Rome and the governor’s hometown of Athens-Clarke County. 729

At a rally in Pittsburgh on Tuesday, President Donald Trump gloated about reporters who were injured and shoved to the ground while covering protests and riots earlier this summer.While sharing anecdotes about the unrest in Minneapolis following the death of George Floyd, Trump referred to an "idiot reporter from CNN with the shaved head" who "got hit on the knee with a canister of tear gas."Trump was likely referring to MSNBC anchor Ali Velshi, who was hit with a rubber bullet fired by the National Guard while covering the protests in Minneapolis.Later referred to an unidentified reporter who was thrown aside "like a bag of popcorn" as police attempted to clear out protesters.Both accounts garnered laughter and applause from the large crowd in attendance."When you see it, it's actually a beautiful sight. It's a beautiful sight," Trump said, referring to police clearing out protesters.It was the second time in less than a week that Trump has mocked Velshi's injury. On Friday, at a rally in Minnesota Trump called out Velshi by name, saying that his injury was "a beautiful thing" and the result of "law and order." 1137

As many public health experts have expressed concern over President Donald Trump's re-election rallies amid the coronavirus pandemic, a study conducted by Stanford University examined the number of illnesses stemming from the rallies.According to the study published last week, the rallies likely caused 30,000 other coronavirus-related infections, resulting in 700 deaths. The study's authors noted that these cases were not specifically from rally attendees, which means that attendees could have spread the virus to others.The study did not use contact tracing; instead, they relied on a statistical model that analyzes the virus's spread in communities Trump held rallies.Specifically, researchers examined 18 rallies Trump held from June 20 to Sept. 22, noting that coronavirus cases in the area near the rallies increased by more than 250 per 100,000 residents."Our analysis strongly supports the warnings and recommendations of public health officials concerning the risk of COVID-19 transmission at large group gatherings, particularly when the degree of compliance with guidelines concerning the use of masks and social distancing is low," the study's authors said. "The communities in which Trump rallies took place paid a high price in terms of disease and death."Trump's rallies have generally included thousands of supporters standing shoulder to shoulder. While masks are often handed to supporters, most supporters at rallies opt not to wear them.Public health experts say that a combination of masks and keeping six feet of distance helps minimize the virus's spread, which has claimed more than 230,000 American lives since the spring.Public health experts have also encouraged people to hold gatherings outside, as most Trump rallies since he resumed campaigning in June have been held outdoors with a few exceptions.Trump has often mocked his opponent Joe Biden, who has held much smaller events to spread out the crowd. Biden has held several "drive-in" style events.Dr. Anthony Fauci, whose recent disagreements with Trump have boiled over on the campaign trail, said in an interview with CNN, he was troubled by Trump's rallies."We know that is asking for trouble when you do that," Fauci told. "We've seen that when you have situations of congregate settings where there are a lot of people without masks, the data speak for themselves."To read the full study, click here. 2403