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Nasa’s chief administrator, Charles Bolden, said the new class of space-farers would work on missions that will pave the way for putting humans on the surface of Mars. The agency last advertised for astronauts in November 2011.

“This next group of American space explorers will inspire the Mars generation to reach for new heights, and help us realise the goal of putting boot prints on the Red Planet,” he said.

Before they can hope to join the 47 active astronauts in the corps, candidates need a bachelor’s degree in maths, engineering, biological or physical sciences, but preferably an advanced degree too. On top of that, to meet the basic requirements, at least three years’ professional experience is needed, or at least 1,000 hours piloting a jet plane.

Flights on the Boeing and SpaceX vessels are expected to allow a seventh person to live on the International Space Station, meaning the equivalent of one astronaut can work full time on scientific research in space. One priority of space station science is to understand more completely how long duration space travel takes its toll on the human brain and body. Two crew members, Scott Kelly and Mikhail Kornienko, are taking part in the One Year Mission on the station, the results of which could help devise ways of keeping astronauts healthy on the way to and from Mars.

Nasas new rocket, the space launch system, along with its Orion capsule, are expected to take astronauts into lunar orbit for missions that will act as stepping stones for the far more ambitious, and technologically challenging, trip to Mars.

The first woman to conduct a spacewalk was Russian cosmonaut Svetlana Savitskaya in 1984, followed closely by NASA astronaut Kathy Sullivan.

"The job that you do is incredible," President Donald Trump told them. "I'm thrilled to be speaking with two brave American astronauts making history

This is the first time for a woman outside of the space station

Koch and Meir spoke about women working in human spaceflight during a recent news conference.

"I think it's important because of the historical nature of what we're doing and that in the past, women haven't always been at the table,"

"There are a lot of people that derive motivation from inspiring stories from people that look like them and I think it's an important aspect of the story to tell,

She and Koch have trained together for the past six years because they're members of the same astronaut class. Meir is set to spend more than six months on board the station.

Koch and Meir replaced a faulty battery charge/discharge unit that failed to activate after a spacewalk on October 11, according to the agency.

The space station is powered by solar arrays and four sets of batteries

Luckily, the faulty unit hasn't changed anything for the astronauts or experiments on board.

Although floating in space looks easy, astronauts say that spacewalks are one of the most physically challenging things they can do, according to NASA.

For the intended spacewalk in March, Koch was going to be paired with astronaut Anne McClain

"However, individuals' sizing needs may change when they are on orbit, in response to the changes living in microgravity can bring about in a body," Dean said.

Fellow NASA astronaut Drew Morgan, also currently on the station, tweeted in support of Koch and Meir during the walk. "So proud of my astrosisters @Astro_Christina and @Astro_Jessica! We've been training together since our selection in 2013, and now they're out on a history-making spacewalk! #AllWomanSpacewalk"

The upcoming spacewalks will help replace solar array batteries and upgrade them to lithium-ion batteries, as well as refurbish the Alpha Magnetic Spectrometer, a scientific instrument "that explores the fundamental nature of the universe," according to NASA.

Mars won't just be a harsh environment for humans, but the fungi as well. The fungi will need cyanobacteria to survive. Cyanobacteria uses solar energy to convert dioxide and water in oxygen and food.

The capture occurred as the spacecraft soared 250 miles above the Arabian sea, skirting the coast of Oman. Three hours later, the capsule was bolted into place. The door was to remain shut until Thursday, though, given the crew's busy schedule.

The supply ship, dubbed Cygnus after the swan constellation, rocketed into orbit Sunday from Cape Canaveral, Florida. NASA's commercial shipper, Orbital ATK, used another company's rocket for the launch. Orbital supply runs had been on hold ever since a launch explosion last year. The other U.S. supplier, SpaceX, meanwhile, has not made a delivery since April because of a launch accident.

Orbital flight controllers, based at company headquarters in Dulles, Virginia, applauded and shook hands once the Cygnus made contact with the space station Wednesday morning. They wore retro-style white shirts, black slacks and skinny black ties in honor of the Mercury astronaut for whom the capsule had been named, Deke Slayton, a commercial space pioneer before his death in 1993.

The previous Cygnus also bore Slayton's name, but ended up being destroyed seconds after liftoff in October 2014. Orbital christened this capsule the S.S. Deke Slayton II.

NASA is paying billions of dollars to Orbital and SpaceX to stock the space station. The pantry got a little too empty for NASA's taste over the past year; besides the two lost commercial shipments, Russia also endured a failed supply run. The Russian Space Agency didn't take long, however, to resume flights; another shipment is scheduled for just before Christmas.

Two of the six-man crew — space station commander Scott Kelly and Mikhail Kornienko — are three-quarters of the way through a one-year mission. They're especially eager to see the Cygnus contents, since they won't be back on the planet until March.

The Cygnus will remain at the space station for a month, before being filled with trash and cut loose for a fiery re-entry.

“This is significant … As much as it’s worth celebrating, many of us are looking forward to it just being normal.”

Upon reentry, however, hot gases and smoke penetrated the damaged wing, causing it to break off and the rest of the shuttle to disintegrate. The Columbia disaster marked the beginning of the end of the U.S. space shuttle program; NASA would retire its last space shuttle in 2011.

What happens next? Well, Sanders has the AOC endorsement as well as $30+ million in the bank -- two very good things with about 100 days left until Iowa. The question now becomes: Does he have another issue on the campaign trail related to his health or age? If not, Sanders' heart attack might seem like a million years ago by the time Iowa Democrats turn out to vote in the caucuses. But if Sanders has any sort of problem between now and then, it's likely the end of his campaign.

Hillary Clinton started one of the strangest news cycles in the 2020 race at the end of the last week when she seemed to suggest that the Russians were "grooming" Hawaii Rep. Tulsi Gabbard to run as a third-party candidate. Gabbard, thrilled with the unexpected chance to battle with one of the biggest figures in the party, called Clinton the "queen of warmongers, embodiment of corruption, and personification of the rot that has sickened the Democratic Party for so long."

And yet, there are cracks. Over the weekend, former Ohio Gov. John Kasich announced that he supported the impeachment and removal of Trump. Florida Rep. Francis Rooney, a Republican, said he would consider impeaching Trump -- and then promptly announced his plan to retire from Congress in 2020.

1. The new Democratic front-runner ... now what?: There's a new top dog in the Democratic field: Elizabeth Warren. As Harry Enten and I noted in our brandnew rankings of the 10 Democrats most likely to wind up as the party's nominee, Warren has overtaken Biden not just in polling but also in money and organization. She also has the clearest path to be the nominee, with a polling and organizational edges in Iowa and a geographic connection in New Hampshire.

Warren's most obvious weakness -- from a policy perspective -- is on her ongoing unwillingness to state, clearly, whether or not middle-class families will see their taxes go up under her "Medicare for All" plan. The answer to that is almost certainly yes -- as Sanders, another "Medicare for All" proponent, acknowledged in the debate.  

By contrast, refugees are the zombies of the world, the undead who rise from dying states to march or swim toward our borders in endless waves.

Today, when many Americans think of Vietnamese-Americans as a success story, we forget that the majority of Americans in 1975 did not want to accept Vietnamese refugees

For a country that prides itself on the American dream, refugees are simply un-American, despite the fact that some of the original English settlers of this country, the Puritans, were religious refugees.

For people like my parents and the Syrians today, their voyages across land and sea are far more perilous than the ones undertaken by astronauts or Christopher Columbus. To those watching news reports, the refugees may be threatening or pitiful, but in reality, they are nothing less than heroic

It is understandable that some do not want to speak of their scars and might want to pretend that they are not refugees. It is more glamorous to be an exile, more comprehensible to be an immigrant, more desirable to be an expatriate. The need to belong can change refugees themselves both consciously and unconsciously, as has happened to me and others

it is precisely because I do not look like a refugee that I have to proclaim being one, even when those of us who were refugees would rather forget that there was a time when the world thought us to be less than human.

China’s political sphere remains male-dominated: women are starkly underrepresented in China’s Parliament and the Communist Party’s Central Committee. In fact, many young Chinese women, disillusioned about their prospects in an economy many see as navigable only by those with money or connections, say the best hope for a woman is “to marry a rich man.” On a popular TV dating show, a model rebuffed an endearing but poor suitor by saying, “I’d rather cry in a BMW than laugh on the back seat of a bicycle.” In a survey of more than 50,000 single women, as reported in China Daily, 80 percent agreed that “only men who make more than 4,000 yuan [$634] a month deserve to have a relationship with a woman.”

at least in business, women and men in China operate largely on a level playing field. “Sixty years of communism,” said Yu, “did one really good thing: bring true equality between the sexes. I think people in China are brought up believing that women are just as capable as men.”

the Mao era was a deviation for China: anti-intellectual, anti-Confucian, collectivist rather than family-oriented. Thus, as China sheds its communist mantle, it is not only Westernizing but also Sinicizing, rediscovering its traditional values.

These values, however, are mutating. The traditional Chinese family, for example, was a pyramid, with a few revered elders at the pinnacle and many younger generations below. In a typical Chinese family today, the pyramid has been inverted, with a “little emperor” only child at the bottom, doted on and catered to by parents and grandparents. At the same time, while the intense competitive pressures of Confucian China have returned, the countervailing Confucian values—selflessness, compassion, honor, and rectitude—have not. As a result, many worry that the China emerging from communism will know no values other than wealth and materialism.

“When we were growing up,” says Yang, “we wanted to be nurses, doctors, astronauts, teachers. Today people are suspicious of anything noble or grand. Kids just want to be rich or powerful.” In 2009, schoolchildren in Guangzhou City were asked what they wanted to be when they grew up. A viral Internet video—later blocked and deleted—showed an adorable 6-year-old giving her answer: “A corrupt official.”

the four women I interviewed are a new breed. Progressive, worldly, and open to the media, they are in many ways not representative of China, past or present. Perhaps they are merely the lucky winners of the 1990s free-for-all in China, a window that may already be closing. Or perhaps they are the forerunners of a China still to come, in which paths to success are far more open.

It has effectively drafted Russia as a partner in missions that it has already planned, outpacing a Russian program that has stalled in recent years.

The two countries did not detail their joint projects nor set a timeline. According to a statement by the China National Space Administration, they agreed to “use their accumulated experience in space science research and development and use of space equipment and space technology to jointly formulate a route map for the construction of an international lunar scientific research station.”

The Soviet Union initially led the first space race in the mid-20th century before falling behind the United States, which put the first man on the moon in 1969, a feat the Soviets never managed.

China, by contrast, was never invited to the International Space Station, as American law prohibits NASA from cooperating with Beijing.

China pledged to keep the joint project with Russia “open to all interested countries and international partners,”

With Russia by its side, China could now draw in other countries across Asia, Africa and Latin America, establishing parallel programs for lunar development, said Namrata Goswami, an independent analyst and co-author of a new book on space exploration, “Scramble for the Skies.”

The station will be "built on the lunar surface and/or on the lunar orbit," the statement said, and will carry out activities such as "lunar exploration and utilization, lunar-based observation, basic scientific experiment and technical verification.

Russia and China "will jointly develop a Roadmap for the creation" of the station, and "conduct close interaction in planning, justification, design, development, implementation, [and] operation [of] the project ... including its presentation to the world space community."

The announcement from the former Cold War rivals comes as NASA is working toward a return to the moon, decades after the last of the Apollo landings wrapped up in 1972.

The joint China-Russia proposal doesn't include a timeline.

The former Soviet Union put the first human in space in 1961 and managed a number of firsts in the decades-long "space race" with the U.S. However, since the collapse of the U.S.S.R., Russia has shown more willingness to engage in cooperative efforts in space. It has built and launched sections of the International Space Station, sent periodic re-supply missions to the orbiting laboratory, and provided transportation to and from the ISS for astronauts from the U.S. and other countries.

The first time NASA attempted this hot fire test in January, the engines rumbled to life. But instead of firing for eight minutes, the rocket’s computer shut down the engines after only about one minute.

Although there are many other rockets available today, they are too small to launch spacecraft that can carry people to the moon.

Although the Space Launch System will be expensive — up to $2 billion a launch for a rocket that can be used only once — Congress has provided steadfast financial support for it so far.

“The reason why we test on the ground in that sort of environment is we want to control the system and monitor the system closely and make sure if we have a problem we can shut down,” said Steve Jurczyk, who is serving as NASA’s acting administrator as the agency waits for President Biden to name his nominee for the post

Because of the size of the Space Launch System core stage — more than 200 feet tall and 27.6 feet wide — the test stand has been modified with an additional steel superstructure.

In Arizona, astronaut Mark Kelly (D) has proven to be a dynamite fundraiser, ending September with $9.5 million in the bank -- more than Joe Biden had on hand at the same time for his presidential bid. And Republicans continue to worry about Arizona Sen. Martha McSally's (R) abilities as a candidate.

And then there are a slew of other races in states -- Georgia, Texas, Iowa -- where Trump won by single-digits in 2016 and where Democratic challengers are likely to be well-funded enough to be in a position to capitalize if a) the national political environment goes even more south for Republicans or b) the GOP incumbents make a major mistake or slip-up between now and next November.

To be clear: Democrats are not favored to retake the Senate -- particularly given the fact that Jones is a near-certain loser unless Republicans nominate Roy Moore (which they might do!). But the last few months have made clear that what once looked like a long-shot bid by Democrats for the Senate majority has turned into a much more plausible possibility.

in what could be Mr. Trump’s most consequential action yet, his administration will seek to undermine the very science on which climate change policy rests.

As a result, parts of the federal government will no longer fulfill what scientists say is one of the most urgent jobs of climate science studies: reporting on the future effects of a rapidly warming planet and presenting a picture of what the earth could look like by the end of the century if the global economy continues to emit heat-trapping carbon dioxide pollution from burning fossil fuels.

the White House-appointed director of the United States Geological Survey, James Reilly, a former astronaut and petroleum geologist, has ordered that scientific assessments produced by that office use only computer-generated climate models that project the impact of climate change through 2040, rather than through the end of the century, as had been done previously.

Scientists say that would give a misleading picture because the biggest effects of current emissions will be felt after 2040. Models show that the planet will most likely warm at about the same rate through about 2050. From that point until the end of the century, however, the rate of warming differs significantly with an increase or decrease in carbon emissions.

The administration’s prime target has been the National Climate Assessment, produced by an interagency task force roughly every four years since 2000. Government scientists used computer-generated models in their most recent report to project that if fossil fuel emissions continue unchecked, the earth’s atmosphere could warm by as much as eight degrees Fahrenheit by the end of the century. That would lead to drastically higher sea levels, more devastating storms and droughts, crop failures, food losses and severe health consequences.

“What we have here is a pretty blatant attempt to politicize the science — to push the science in a direction that’s consistent with their politics,” said Philip B. Duffy, the president of the Woods Hole Research Center, who served on a National Academy of Sciences panel that reviewed the government’s most recent National Climate Assessment. “It reminds me of the Soviet Union.”

also to question its conclusions by creating a new climate review panel. That effort is led by a 79-year-old physicist who had a respected career at Princeton but has become better known in recent years for attacking the science of man-made climate change and for defending the virtues of carbon dioxide — sometimes to an awkward degree.

“The demonization of carbon dioxide is just like the demonization of the poor Jews under Hitler,” said the physicist

Mr. Happer and Mr. Bolton are both beneficiaries of Robert and Rebekah Mercer, the far-right billionaire and his daughter who have funded efforts to debunk climate science. The Mercers gave money to a super PAC affiliated with Mr. Bolton before he entered government and to an advocacy group headed by Mr. Happer.

For Mr. Trump, climate change is often the subject of mockery. “Wouldn’t be bad to have a little of that good old fashioned Global Warming right now!” he posted on Twitter in January when a snowstorm was freezing much of the country.

His views are influenced mainly by friends and donors like Carl Icahn, the New York investor who owns oil refineries, and the oil-and-gas billionaire Harold Hamm — both of whom pushed Mr. Trump to deregulate the energy industry.

The president’s advisers amplify his disregard. At the meeting of the eight-nation Arctic Council this month, Secretary of State Mike Pompeo dismayed fellow diplomats by describing the rapidly warming region as a land of “opportunity and abundance” because of its untapped reserves of oil, gas, uranium, gold, fish and rare-earth minerals. The melting sea ice, he said, was opening up new shipping routes.

At the National Security Council, under Mr. Bolton, officials said they had been instructed to strip references to global warming from speeches and other formal statements. But such political edicts pale in significance to the changes in the methodology of scientific reports.

A key change, he said, would be to emphasize historic temperatures rather than models of future atmospheric temperatures, and to eliminate the “worst-case scenarios” of the effect of increased carbon dioxide pollution — sometimes referred to as “business as usual” scenarios because they imply no efforts to curb emissions.

Scientists said that eliminating the worst-case scenario would give a falsely optimistic picture. “Nobody in the world does climate science like that,” said Michael Oppenheimer, a professor of geosciences and international affairs at Princeton. “It would be like designing cars without seatbelts or airbags.”

“It is very unfortunate and potentially even quite damaging that the Trump administration behaves this way,” said Johan Rockström, the director of the Potsdam Institute for Climate Impact Research in Germany. “There is this arrogance and disrespect for scientific advancement — this very demoralizing lack of respect for your own experts and agencies.”

Republican incumbents are straining for survival from New England to the Deep South, in the heartland and the West and even Alaska.

With the chamber now split, 53-47, three or four seats will determine Senate control, depending on which party wins the White House.

What started as a lopsided election cycle with Republicans defending 23 seats, compared with 12 for Democrats, quickly became a more stark referendum on the president as Democrats reached deeper into Trump country and put the GOP on defense.

Suddenly some of the nation’s better-known senators — Lindsey Graham in South Carolina, Susan Collins in Maine — faced strong reelection threats.

Only two Democratic seats are being seriously contested, while at least 10 GOP-held seats are at risk.

Felkel added: “You’d be hard pressed to admit we don’t have a Trump problem.”

The political landscape is quickly changing from six years ago when most of these senators last faced voters. It’s a reminder of how sharp the national mood has shifted in the Trump era.

Younger voters and more minorities are pushing some states toward Democrats, including in Colorado, where the parties have essentially stopped spending money for or against GOP Sen. Cory Gardner because it seems he is heading toward defeat by Democrat John Hickenlooper, a former governor.

GOP senators must balance an appeal to Trump’s most ardent supporters with outreach to voters largely in suburbs who are drifting away from the president and his tone .

Arizona could see two Democratic senators for the first time since last century if former astronaut Mark Kelly maintains his advantage over GOP Sen. Martha McSally for the seat held by the late Republican John McCain.

In Georgia, Trump calls David Perdue his favorite senator among the many who have jockeyed to join his golf outings and receive his private phone calls. But the first-term senator faces a surge of new voters in the state and Democrat Jon Ossoff is playing hardball.

Ossoff called Pedue a “crook” over the senator’s stock trades during the pandemic. Perdue shot back that the Ossoff would do anything to mislead Georgians about Democrats’ “radical and socialist” agenda.

Democrats have tapped into what some are calling a “green wave” — a new era of fundraising —

Competitive races are underway in Republican strongholds of Texas, Kansas and Alaska where little known Al Gross broke state records, Democrats said, in part with viral ads introducing voters to the military-veteran-turned-doctor who once fought off a grizzly bear.

The COVID crisis has shadowed the Senate races as Democrats linked Trump’s handling of the pandemic to the GOP’s repeated attempts to undo the Obama-era Affordable Care Act, particularly its insurance protections for those with preexisting medical conditions.

“In more places in the country than not, the president is not getting good marks” on that, Flaherty said, and it’s damaging Senate GOP candidates, “especially those in lockstep with the president.”

This isn’t just about cups of coffee. It highlights how astronauts adapt to life in space away from Earth’s comforts.

The four Toss-up races are all seats with Republican incumbents.

Democrats are also benefiting from not having to play much defense this cycle. Of the dozen Democrats up for reelection this year, only the two running for reelection in states Trump carried in 2016 -- Alabama Sen. Doug Jones and Michigan Sen. Gary Peters -- face competitive contests, according to Inside Elections.

In the wake of Ginsburg's death and McConnell's commitment to giving Trump's nominee a vote, there's even more attention on Graham, the chairman of the Senate Judiciary Committee.

Recent public polling suggests Harrison's spending could be paying off, too. He was tied with Graham at 48% among likely voters in a Quinnipiac University poll earlier this month, which followed another tied-up Quinnipiac poll of registered voters last month.

Democrats won control of the House in 2018, picking up a net gain of 40 seats, many in diversifying suburban districts that delivered a rebuke of the President's first two years in office. Given those gains, Democrats have a smaller universe of offensive targets for this cycle, but the party still sees opportunities across the map -- including a handful in Texas due, in part, to Republican retirements.

For Republicans, the path back to the majority would start with the 30 districts held by Democrats that Trump carried on his way to the presidency four years ago.

Inside Elections currently rates 205 seats as safe for Democrats, which would put the party just 13 seats away from keeping control of the chamber. There are 164 seats that are Safe Republican, leaving a universe of 65 seats in play -- 37 held by Republicans and 28 by Democrats.

Only 10 seats are rated Toss-up, the most competitive designation, with seven held by Republicans and three by Democrats.

Hillary Clinton won this South Florida district in 2016, but the Cuban-American community's embrace of Trump could move it away from Democrats. Freshman Rep. Debbie Mucarsel-Powell, who unseated GOP Rep. Carlos Curbelo in the 2018 midterms, is no longer in a Tilt Democratic race. Her campaign against Miami Dade County Mayor Carlos Gimenez, himself a Cuban American with a high profile, is now a Toss-up.

The other four ratings changes, however, are all in Democrats' favor. A tightening presidential race in Arkansas' 2nd District, which backed Trump by 10 points in 2016, could help Democrats unseat GOP Rep. French Hill. His race shifted from Likely Republican to Lean Republican.

Although it's not at all like the suburban seats described above, Maine's 2nd District also shifted in Democrats' favor. Trump's 2016 victory here earned him an electoral vote, but he's not expected to do nearly as well in the White working class district against Biden as he did against Clinton.