the way the me is there another way. after all the environment isn't recyclable. the make up your own mind. d. w, made for mines. the parents stressing around on the international space station looks like a lot of fun, but the life of the nation is actually very strenuous and can take quite a toll on the body. the guns here for many, it's a dream job. italian after nor samantha, christopher, he tells us why the the welcome to tomorrow. today the sign show on d. w,

i use is a key fit. can you run once and cruel? was the best of them? do you have a valid driver's license and work well in the team even in stressful conditions? the would you undergo underwood training with and take a parabolic flight? great. if you're also under the age of 50, between one meter 50 and one meter 90 tall and have excellent hearing and i side, you could be in the running to become an astronaut. with the european space agency or isa is wrapping up. it's nicest recruitment drive and hope to see many women among the applicants. the isa is only sent to female as to north to the i says today, one of them is samantha christopher it with

it was a dream come true. i writing literally and then you well, i'm sure the house, the house, it just kept you into the space station where my slate, flipping out of your lungs come in that you come into this new world have been dismissed. if i had the feeling as i was coming into the space station, this is a whole new way to live. a new way of moving around that everything. we learned some house in the noise and down to johnson space center in houston, texas has helped to write space history. ah, this is where nasa over. so mission to the moon which can 5 rocket the era is still

considered the heyday of space travel. ah, samantha cristo ferretti spent 3 months preparing for her 2nd mission to the international space station. ah, the launch is scheduled for next spring. part of the training involved, knowing how to respond. and then imagine, for example, if a fire breaks out on board. so what helps makes a good astronaut i think the best you don't have to be a top scientist or the best athlete ever. that's not that important. when you do need some technical and scientific knowledge, that's the basic prerequisite. that's all you also need to be inquisitive and adventurous and have

a desire to learn things. and then the work covers of spectrum. but so you also have to want them and enjoy it. samantha christopher se is a mechanical engineer and fighter pilots. since 2009, the in space agency selected for more than 8400 applicants in november 2014 cheap on her 1st mission. she spent $200.00 days at the international space station. at 1st it took her a while to get used to the new environment. i think this is so much it's a bit like knowing a house because you visited a model of it and model house not to be rep because of the i ss when

we train. i need to pick the bare minimum and the album, everything is clean and nothing is lying around. but when you really live in a house, everything is lying around. when you open the close, it only kinds of things that lots of clothing and other things. it's a place that's really lived in the movement shuns because you also have to learn how to move around carefully and lay, and otherwise everything flies all over the place. you also have to get to know your surroundings about them. and she says, life was 0, gravity was a great experience. everything felt so light and effortless, even if some everyday tasks were more cumbersome and tedious than on the engines can develop quickly and a small team when you're living in such a confined space. the militia, having

a sense of humor, is key. you really can't overestimated because it really is the case that in such a confined space, there are going to be tensions at times. who more talked over the feel that humor confused straight away. i'm fine and the about the bed is nice and fun. loving jokes. a bit of humor. you can come things down quickly. guess that you have participated in mission society supervising scientific experiments. samantha is keen to inspire the next generation of rocket scientists and astronaut. children love her stories about life in 0 gravity. she has some of her tricks with them to like if you want to keep your fingernails, you need to do it near the ventilation system that way. nothing flies around. but don't forget to vacuum away your nail clippings afterwards.

the, the thing she finds most challenging is helping colleagues get ready for space walks . it takes a full 6 hours until an astronaut is ready to step outside. so you can see for this they need to be prepared. they basically have to be assembled on the astronaut piece by piece. there's a lot to do in the law. and in everything you do because you have to be very careful to not make any mistake, a single mistake. it could be a life threatening the astronaut who's going out solution, so that was technically demanding and psychologically stressful. but afterwards, when he'd most of the challenge, it was very satisfying me. everyone's favorite spot in the space station is the large window with her head often hanging

upside down and her feet on the ceiling. samantha christopher se would gaze in wonder come on, you really have this wide view from one horizon to another. and then out into space and the stars. it's very impressive. oh, it's not going to scan the sunrises and sunsets or of course very moving, but also the northern nights. because the nighttime views are generally the most beautiful and moving the night on us is also a little more romantic for management. sometimes you see this red glimmer. it's the nightclub with the upper atmosphere. and then you notice that the atmosphere is really much higher than the thin blue layer you normally sell face research also include studying under water locations here on us. in 2019

samantha, let them know the mission of the coast of florida. her team spent 10 days testing new technology for future exploration of the moon and mars it was an all women crave. does she think women might be better? astronauts? governments don't mention. i think you should give people the chance to just be themselves with them and just because you're a woman or a man but doesn't mean you have to be a certain way, such as more masculine, feminine and the member of the mentally. there are many traits that we might consider to be female, to male colleague of mine on the space station might have exhibited more of them a colleague for me up there and vice versa. i i think you have to try to get away from the thinking and speaking in those terms. and then conversely, even in march 2021, samantha christopher utley fulfilled another dream by being selected for

a 2nd flight to the international space station next year. and this time she'll take command at the mission. so how did the 1st journey into place change has been i think has become much more calm. i fulfilled my lifelong dream. now i think i have more room in my life. other people math size. i have more time for family and friends, so i have more space for other things you could say by the experience that will no doubt serve her well on her 2nd space mission, which she already looking forward to the when i d. w. social media channels. we asked, what could appeal to you about flying to the i s s r

l container a way to says what appeals to him if the excitement of the journey and the beautiful view dr. sorry, would hope to gain more insight into astronomy of the things in space. unexperienced 0 gravity 1st hand. it also like to see black holes, a supernova, other planets and galaxies. if you would like to look out the window and see if the 10 of us it would be terrifying, she says, but interesting to me experiencing the way his body reacts to being away from other us that would appeal to donnelly, not feliciano well, catalina, how juno thinks it could benefit others. he would make the trip with people who still believe the flat. then they could see the truth for themselves. that's how your comments me looking

at it from outer space is an experience. many astronaut rave about samantha christopher, it is of course, no exception. there's just something fascinating about observing planets from a distance. human beings have always gazed in wonder the night skies. but these days, studying celestial bodies isn't always easy to do. as the next report explains, who are off to the national park in west and germany. ah, so the night sky above germany's eye for national park this is where a household garden hug and runs an observatory. he'd been watching the night sky getting brighter. if there were absolutely no light pollution and we really had a natural night sky, which no longer exists anywhere in europe, then we'd probably be able to see 3 to 4000 stars from here. but even on

a good night, you can only see between 182500 stars on up as i told them for us down it. it's a breathtaking sight, thousands of stars. you can even see the milky way from here. how bad and how is used to this turning view? oh, but most people in germany could only dream the seeing so many stars as almost everywhere the night sky is simply too bright in cologne. you couldn't see maybe 20 or 30 stars, but only the bright ones. if the weather is clear and there are no clouds in the sky, you have to drive about 40 kilometers outside of cologne just to get away from the artificial light glow and be able to see and even halfway decent nights guy on him as oh, light pollution as the phenomenon is known, is a worldwide problem. fewer and fewer places on earth get dark at night, as artificial light brightens the sky. this is not just

a problem for astronomers and amateur stargazers. artificial light causes us to sleep at night and it has a negative impact on our health ah, for nocturnal insects, who rely on the stars for their sense of direction. bright sources of artificial light can have deadly consequences. light pollution is one of the key contributors to insect decline. birds can lose their sense of direction due to light pollution as well. they get lost or crashed into brightly lit buildings. button hog that completely eliminating artificial light, especially at nighttime, is out of the question. but he isn't willing to sit idly by so he drives to the city each night on the lookout for unnatural light and opportunities for improvement. with the aid of a special camera, he measures how dark this guy is,

and more importantly, how bright. it's no surprise that industrial areas are bright and still much of the extra slight could be avoided in a big portion of this area is illuminated by spotlights that rational high poles. and they're not covered is that means the light shines in practically all directions and a lot of it goes up to the side where it's not even useful fit. and i get off with the help of the right line. your metal one is as well as metal covers, like could be directed to the spot where it's actually helpful. would you like to make this event? and i thought i was making sure that street lights only direct light where it's actually needed is one good way to improve the situation. another important tool in the fight against light pollution, completely avoiding artificial light at night and selected places such as the eiffel national park. since 2014, it's been recognized as an official,

dark sky park, one of 4 in germany, and a waste of darkness that's gone. the nickname star park typo martin, and played a key role in these efforts. understand a star park is a region that's designated as such for for filling particular criteria, such as the visibility of the milky way. it's unlikely that our cities will ever be as dark as the eye for national park again. but perhaps the light pollution can at least be reduced bad and will keep fighting. so that in the future, more people will again be able to see the milky way. incidentally, insects aren't the only ones that are being impacted by light pollution. a recent study shows rodents are no longer as active in searching for food that start singing earlier in the morning. and marine turnover not running into the c hatching,

but moving in and instead affecting their breathing and feeding patterns. but it's not just light that holds the air sufficient. lee in the us had a question about something else. the where does just come from? it seems to be everywhere, no matter how thoroughly clean more soon appears, but not all jobs just create particulate matter that can remain suspended in the air for an extended period of time is often referred to as dust airborne, particles measuring between 2.5 and 10 microns in diameter are known as course particles. for comparison human hairs between 20 and 80 micros across particles smaller than 2.5 microns, are considered to be fine particles because they're so small airborne particles can even make their way into our lungs,

which can affect our health. but how does all this dust form in cities the primary sources of dust are anthropogenic, in other words generated by human activity? industrial emissions are the biggest cobra by traffic also generates huge amounts to exhaust fumes and tire abrasion. but more than 80 percent of airborne particles floating in the earth's atmosphere come from nature. deserts and sees contribute heavily to the creation of dust. during sandstorms, these particles can be carried is high as 10 kilometers into the stratosphere and transported over incredibly long distances. as ocean one revamp raise it releases see salt aerosols up to 1500000000 tons of them a year. the amount of density emitted by a chemical reaction can be enough to interrupt air traffic. the ash released in

these geological immense can sting the atmosphere for as much as 3 years. the tiny particles also reflects sunlight away from the ground. this has a cooling effect on our planet. but light scattering caused by dust high in the atmosphere also enhances the red part of the sun spectrum. which can result in spectacular sunsets. ah, how good is read? why do you have a science question? you'd like us to answer? send it to us as the video, text or voicemail. if we feature it on the show, you'll get a little surprise from us as the thank you. come on. just tell me you can find more fascinating stories from the world of science on the west side or on twitter, the modern

museums or anything but dusty displays of objects. researchers at berlin's natural history museum are using the world 1st 3 d insect scanner to digitize their mouth collection, all of the museums the 30000000 exhibits ought to be catalogued in digital form. over the next decade, digitalization is propelling museums into the 21st century. it's also being used to archaeological fines and object savant. trade and shine pallet home to a 500, you know, salt cellar made of ivory today, it's being removed from the cabinet to create a 3 dimensional twin. it's one of more than a 1000000 objects at the palace come museum in the german city of gotten the huge number of treasures is being digitally catalogued as part of a massive project corner line. it does. the corona virus is speeding up the project

immensely off. this place and there are no more questions about why we are doing this project, or whether it's necessary for whether it has to be so large and so well funded. the digitalization process gets underway. in 20 minutes, 9 cameras capture every tiny detail of the salt container. the cameras are positioned on 3 levels. because to salt seller is placed on a table that rotates, it can be photographed from all sides. different camera types record, different details. in duncan conditions, project has been structured light onto the object, allowing the outer cameras to capture its geometric shape. when the light is on the middle cameras then photograph the surface of the object. this combination of 2 imaging processes is unique. it's even enables scans the very optically challenging

object and my we took a photo of a glossy white mice in porcelain force without any texture. and it can only be done if you separate the geometric cameras from the texture camera. some of that's what this scanner does, doesn't stevens for fun, but these are kind of this is the finished digitized version software, use the 1500 photos to create precise grade measures at lighting and the digital twin is ready in the next room, a feather head dress, from the ethnic logical collection is about to be digitized me play center stage and perfect. let the head dress is rotated. in 5 minutes, the camera takes 20 for photos. the turned into a 360 degree video. it's only 2 dimensional,

but the rotation makes it sophisticated. when i know of a ship to come up like when, when the surface faces the camera and an object is stationary, it's easier to get the lighting right. when it rotates the angles at which the light hits the object and is reflected change for also. and so you have to adjust the light in advance to make it work for as many objects as possible at different angles. those processes can digitize at high speeds. the entire collection is to be recorded over the next 7 years. it's the largest museum digitization project in europe, with generous funding from the federal and state governments. ironically, it's taking place that there's relatively unknown museum in the center of germany. treasures have largely been eclipsed by higher profile venues, but that's about to change. the legal term. there were discussions about how to open up such a huge collection. and so if you think about it,

there are 1200000 objects to catalogue in the store. and that takes decade and the easiest and most direct way is to just digitize it all from the start to see the items where accumulated by the man who built the palace, ernest, the 1st you gotta beginning in 1650 his descendants gland to the adage, to the collection, most items are in storage like the head dress that belonged to a chief of the mendota qu, tribe in the amazon. and each of these objects will be catalogued by hand during the digitization process. the data from freedom shine palace is stored here at the university library in vienna. turning the 3 d scans into augmented reality feels like a bit of a game. but the benefits are manifold. the point where the museum signs are too small to read, usually and hang too low. that's what we hear again and again. but here i'll be

able to use my mobile device to look at an item and animated the figure i see then will give me contextual information on my smartphone. and that tells a story. we know how the object ended up and go to for example. and we know what makes it of interest to research. i can't capture that in any checks and fixed. the locked down has fuel the desire for virtual access to collections. but google has been working with museums for the past decade to digitize their inventories, the state museum and frankfort, for example, have found new fans through its online exhibition. the museums podcasts are popular to but putting items online also makes them available to other experts, allowing museums around the world to do research together. they can lend out exhibits in the form of a 3 d print or perhaps even display them as a hologram. that's

a location on the other side of the world. the. that's all for today. thank you for watching. we'll be back next week with another additional tomorrow today. until then stay healthy and stay can use ah, the news .

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this is d w. news coming to you live from berlin. joe biden looks for a fresh start at his 1st nato summit as us president. he's looking to put the strained years of donald trump in the past. and for it's new cooperation within the alliance. also coming up g 7 leaders leave behind there is someone in the u. k with pledges to tackle the corona virus pandemic.