Humanity's time machine now has atarget. Star light star bright, the first star Webb we'll see is HD 84406 asun-like star about 260 light years away with this announcement nasa gave the world theobject of the James Webb space telescope's first peak at the universe's past and it's in the taleof Ursa Major HD 84406 gets the honor of being the perfect target for web when its 10 billion dollareye opens and begins to focus its spectacular golden mirrors the winner has the perfectbrilliance will stay in Webb's field of view long enough for the precise optical alignments andis in a rather desolate region of the greater bear what's even better HD 84406 can be seenthrough regular binoculars so we mortals can share in this historic moment welcome theFactnomenal in today's video we plunge into the .
Wondrous project that is the James Webb SpaceTelescope dig into what lies ahead for the next several months and how this spacecraft will verylikely change our understanding of our universe as the world watched humanity's greatest effortat peering into our cosmic past left home and trekked roughly a million miles to its celestialparking spot the incredibly complex unfolding of this gold-plated space origami kept the scientificworld and the curious among us holding our breaths and now it's done this combined effort by nasa theEuropean Space Agency and Canadian Space Agency reached its destination in 30 days only after asecretive 16-day trek on a ship with a military escort from California through the PanamaCanal to the ESA spaceport in French Guiana why secretive and why the military escort toavoid the minuscule but not impossible danger .
Of piracy of course Webb welcome home with thesewords nasa administrator bill nelson announced the James Webb space telescope's arrival at its l2destination 30 days after its Christmas morning launch we're one step closer to uncovering themysteries of the universe and i can't wait to see Webb's first new views of the universe this summerso what exactly are we looking for baby pictures the birth of the universe nearly 14 billionyears ago is shrouded in mystery yes there are aspects we've deduced from best evidencebut how much do we really know web is set to change that in a big way by peering back into thetime capsule that is deep space to just about the earliest light possible to see in fact it shoulddetect infrared light from galaxies so far away that the light has taken almost theentire history of the universe to reach us .
Very much like a time machine we are trying tobuild up the story of how the first galaxies ever emerged and how those evolved into galaxieswe see today and we live in today says Dr. Maruska Bradach of the University of California Davisif you don't get the beginning right it's really difficult to figure out what the whole evolutionlooked like and to do that we need a time machine the guy who lives next to me is always like ihave a jacuzzi on my balcony i have a jacuzzi on my balcony but wait until i tell him i'vegot a time machine on my balcony getting to the l2 orbital point is a great accomplishmentespecially considering the never-before-done trick of launching a massive telescope that isfolded tight only to unfold it in the depths of space far from human ability to lay on handsand fix a problem not to mention unfurling and .
Stretching the tennis court sized sunshield'sfive thin layers without which Webb's delicate instrumentation becomes space toast faster thanyou can say is it warm in here yet there's so much more to come we're just setting the tablesaid Keith Parrish observatory manager at NASA's Goddard Space Flight Center after Webb reached itsfinal destination we were just getting on station getting this beautiful spacecraft unfolded andready to do science the best is yet to come even though Webb has reached L2 the pointwhere gravitational forces of the earth and sun balance with its orbital motionthere is still navigation to do there are tiny periodic adjustments neededto keep Webb properly located in orbit and a team of scientists will perform a smallmaneuver every three weeks to keep it on course .
That schedule could change as of course nothinglike Webb has been maintained at l2 before and the team will be learning how the spacecraftbehaves on the fly at this point when Webb reached L2 with its incredibly complex unfurlingcomplete undoubtedly there was a collective sigh of relief among hundreds of scientistsengineers designers and instrument builders but now there's a whole other set of instrumentsand mechanisms to be fired up and tested and an incredible amount of fine tuning to be madeso guess what it's time for more breath holding before the beautifully intricate mirror beginsadjusting and taking its first blurry images complex instrumentation will be turned on andoperated the first image taken by web will actually be of a crowded group of stars to makesure that light is getting through the telescope .
And into the instruments properly so just thetest the image will not be focused as the mirror fine-tuning will not have been done but nasa willknow the process is working then roughly two weeks after reaching its long-term parking spot theintricate work of adjusting the primary mirror segments begins with identifying each segment withits image of a star in the camera the mid-infrared instrument MIRI will also be turned on at thistime and with any luck astronomers expect to be able to take the first science qualityimages after 90 days yes it will take a while but with the most incredible mirror ever conceivedof by humanity a little patience is a virtue patience is a good thing right up until youget anxious for something you are eager for to hurry up and arrive but that is what thescientific world needs for just a few more months .
After all nearly three decades of work and 10billion dollars went into the most powerful telescope ever created and scientists absolutelywant to get it right it starts with a mirror and what a mirror it is this jewel is covered withslightly more than 48 grams of a microscopically thin layer of gold to optimize reflection ofinfrared light so thin that the entire mirror's gold layer would fill the volume of a marble orfive men's wedding rings the mirror spends 21.3 feet or 6.5 meters with 18 hexagonal segments eachof which moves in seven angles operated by seven pistons and actuators all of this must be alignedperfectly to get pictures that we anticipate but truly cannot imagine until we see them andof course there's the smaller round secondary mirror that also needs tweaking the processstarts by painstakingly aligning each mirror by .
Centimeters and gets incrementally smaller untilthe units are less than one ten thousandth a width of a human hair smaller than a virus the actuatorswhich are 126 tiny motors along for the ride are moved only one at a time to reduce complexityand ensure safety by focusing on a single movement in fact it takes about a day to moveall 18 segments by a single millimeter for the record that's slower than watching grassgrow much like a photographer takes preliminary shots to ensure lighting and background are allin order before getting down to serious work Webb will take several blurry images during setupokay so not the most thrilling part of the James Webb space telescope's mission but theend goal is so much worth a little patience right that's a good day to circle on yourcalendar because it's around this day that .
Engineers expect the mirrors to be fully alignedit will have been four months from launch before Webb's marvelous mirror is fully aligned andall instruments focused and for them to work properly the temperature must drop to negative 388Fahrenheit infrared background noise is suppressed at this temperature and that's critical for thosebaby pictures of the universe we hope to put into humanity's scrapbook but it's the end ofApril and the mirror is ready so why does the web team say we must wait until the end of Juneat the earliest for actual science to get underway it's the instrumentation each of the fourincredibly complex and intricately linked instruments on board must be calibrated andtested in each of its many operational modes this sequence lasts over two months so what do youthink about Webb's arrival at L2 and the waiting .
Game the scientific world must now endure whatare you most excited to see revealed by humanity's time machine tell us in the comments and asalways thank you for watching Factnomenal you
Humanity’s time machine now has a target. “Star light, star bright…the first star Webb will see is HD 84406, a sun-like star about 260 light years away.” WIth this announcement, NASA gave the world the object of the James Webb Space Telescope’s first peek at the universe’s past, and it’s in the tail of Ursa Major! HD 84406 gets the honor of being the perfect target for Webb when its $10 billion eye opens and begins to focus its spectacular golden mirrors. The winner has the perfect brilliance, will stay in Webb’s field of view long enough for the precise optical alignments, and is in a rather desolate region of the Greater Bear. What’s even better? HD 84406 can be seen through regular binoculars, so we mortals can share in this historic moment! In today’s video we plunge into the wondrous project that is the James Webb Space Telescope, dig into what lies ahead for the next several months and how this spacecraft will very likely change our understanding of our universe. Buy us a coffee to show your support! https://www.buymeacoffee.com/Factnomenal DON’T CLICK THIS LINK: https://tinyurl.com/357shs3j Thanks for watching Factnomenal! 🌎 Subscribe for more space discoveries, space facts, and space in general! 🔔 Hit the bell next to subscribe so you never miss a video! ► For copyright matters, make sure to send us an email to Adam@trustedmiddle.com #jameswebbtelescope #factnomenal #jwst