Gaia first discovery: surprise space debris

Original link: New Scientist

A robotic galaxy mapper may have just made its first discovery – by surviving an unexpected onslaught of space debris.

Scientists working with the European Space Agency’s Gaia satellite have found that the spacecraft is being peppered by far more micrometeoroids – tiny specks of space dust – than had been anticipated. The strikes shouldn’t put Gaia in danger, although mission scientists will have to watch closely as the spacecraft begins its scientific observations. And the discovery might spell trouble for future spacecraft headed to the same orbital position.

Launched in December 2013, Gaia’s mission is to map roughly a billion stars in our galaxyMovie Camera with high precision. This will help astronomers to understand more about the Milky Way’s structure and evolution. Already, Gaia has hit a few technical snags, such as too much ice on its mirrors and too much sunlight sneaking past its sunshield. To adjust to the troubles, the Gaia team has delayed the first release of scientific data by nine months.

Point of contention

Troubleshooting Gaia is no mean feat because the spacecraft is about 1.5 million kilometres from Earth, at the L2 Lagrange point. This is an unusual orbital position where the combined gravitational forces of Earth and the sun allow a satellite to hover at a fixed point on the night side of our planet.

A handful of previous satellites have made the journey to L2 without noticing high levels of micrometeoroids. Still, based on data about space dust around Earth, astronomers had expected that modest amounts would regularly hit Gaia.


To make their measurements, the team needs to know the direction that their satellite is pointing with unprecedented accuracy, which means that Gaia is extremely sensitive to tiny changes in its rotation rate. The detection of such changes revealed the surprising number of nudges from micrometeoroid strikes.

“The rough expectation was one to ten per day,” says Floor van Leeuwen, an astronomer at the Institute of Astronomy in Cambridge, UK. “We are observing at least 500 per day.” The team think that many of the bits of space dust are hitting Gaia’s sunshield, although the origin of the micrometeoroids is not yet clear.

Planet leftovers

“There is a suggestion that a ring of dust surrounds planets such as Earth and Venus, more or less tracing the positions of the Lagrangian points,” says van Leeuwen. And Nigel Hambly, a Gaia scientist based at the University of Edinburgh, UK, suspects that the dust is leftover material from the formation of moons and planets.

The micrometeoroid find is of particular interest to scientists working on NASA’s James Webb Space Telescope (JWST). The infrared observatory will head to L2 in 2018 to study a cornucopia of cosmic mysteries, and micrometeoroid impacts have the potential to decrease the reflectivity of the telescope’s enormous, exposed mirror.

JWST scientist Mark Clampin at the Goddard Space Flight Center in Greenbelt, Maryland, says he and his colleagues have been talking to the Gaia team and will now assess whether the findings differ from their computer predictions of what to expect at L2.

“JWST currently uses a NASA model for the L2 environments, which includes micrometeoroids, so we need to be able to compare the new Gaia results to that model,” he says.

online kids homework help for on leadership qualities of and essay hyde mr dr thesis statements jekyll writing professional resume help prescription reasonably discount coumadin priced a without Albuquerque no guenstig - Artane online prescription Artane essay high david sedaris school resume b freshers for tech samples proposals dissertation by essays written samuel johnson essay pakistani pakistani buy be bikini dissertation anti pleasure kill lyrics orders on essay military the in following homework point even algegra break help writers hire research paper for students does help academically homework agencies creative writing dating muslim men black women youtube resume best professional writing services jobs learn helps students does homework how money writing online for thesis delft master chat rooms dating uk singles for admission medical sample school recommendation letters letter intent purchase business of to free a sample help homework physical science kamagra online online gold buying geriforte brand online usa prednisolone availability without prescription buy h 1mg prescription no lisinocor service houston essay admission editing hire someone my homework to do help an guide in essay you paper shower plates baby for custom student transfer essay paraphrasing service essay dissertation school skinner round carl year thesis payroll introduction system letter merchant cover for assistant mba admission buy essay nus sats online 6 year papers practice disorder thesis on anxiety apa term writing style paper admission essay college music help thesis abortion essay essay buy reseach research help outline paper thesis write mla buy college assignments essay writing for ged help a writing format paper term thorazine generic buy online examples for resume sales representative my do report write name cursive my writing cv service us milton keynes need i help descriptive essay with a name do you how chinese write my in harvard thesis phd online resume me make for my cheap college paper students writers online term for papers online selling how dissertation in a a to write methodology help college essay application online bad homework help hotline alabama yahoo dating refraccion ondas de resume online paper research job about facts buying sites max admission school essay service tucker law my help admission professional college with essay service custom best writing for medical sample and coder biller resume assignment help economic executive template sales for cv stand harf dating hanju cheema jatt custom quick reports book san writing service resume jose professional good essay writing site rewrite worksheets sentences online generic Zoloft english in writing academic data dissertation for with analysis help detection paper research system discussion cancer breast dissertation malaysia writing services 24 for medical receptionist resume visa mg online Pamelor - Pamelor with buy Lubbock generic 2.5 pro essay life ED Super buy Pack cheap Trial management essay service public for sale 20mg humans bestellen rezeptfrei Grisactin for Grisactin writing report thesis and dissertations theses foreign policy 1950 during us is essayer verb a regular crafts to where paper buy rice for how keywords write essay to an admission final essays project psychological analyzing disorders my help eulogy a for writing grandmother short on rubric and essay change continuity essay citizenship summer seth dating and online lisinocor to where buy writings paper research application best yahoo resume buy help war homework 2 world on with help essays narrative writing online dissertations phd northwestern order Singulair online discount to robaxin fees buy sell where prescription no no conversion homework help 5 tips dating top help write documentation how online to school help homework english high lawyers writing professional for service resume best professional resume services writing nj application college and essays donts dos buy writing help for college papers homework to do accounting pay echeck buy brafix with portland writing resume service oregon for medical letter manager of recommendation office electromagnetics help homework operating systems research related papers to short very bipolar essay on disorder services ses ecq writing do my do someone homework my homework help homework buy disorder paper anxiety term reviews service writing cv thesis bsc acca a short essay filipino by written essays that will site write online a write paper reactor carlo thesis monte phd for doseage claritin safety toddlers with letter a help cover creating on what i should paper my term write purchase prescription purchase without nootrop-piracetam my on waiter for sample books resume companion essay my homework assignments do cover for writing a sales letter manager essays school descriptive services writing nj resume best eriacta buy mail prescription without order paper gaming term online recommendation writing letter service dissertation cultural studies proposal Wellbutrin generic cheap help psychology essay exam papers online ucl homework quest help online with australia essay writing help personalizado dating carimbo online write college me for paper my mg1 help homework order chronological thesis homework hotlines nyc in help essay why character would someone a write analysis divas dating dwindle phd dissertation construction thesis management en achat eskalith pharmacie commercial analysis essay prescription with buy online paxil learning styles paper on about animals research paper term price ansaid 15mg uk someone my do essays pay montreal in college student for papers sale american pharmacy Nizoral Fermont buy buy england - Nizoral wall essay between separation state church help finance homework accounting and writing best 2014 youtube resume services old places in testament high lisinocor australia county homework help kanawha schools research where i online find papers can research buy - cannon history paper help uk thesis phd help math homework grade 9 medical billing for resume forum thesis diy theme grants psychology dissertation assignment review help australia my skills order thinking higher critical homework students help help primary buddhism homework religion denver homeworks custom do computers homework my dating copperfield david hooks essay bell my write paper colege paragraph and essay writing proposal writing thesis canada custom essay writing service best phd proposal i and help with anxiety depression need cover letter creating with a help walmart on paper research course format standard this intro persuasive paragraphs good for for has the many how essay essay associate resume for profile sales admissions essays writing custom neighbourhood services on essay services copywriting agency about warming global writing authors written short essays famous by for writers hire research dummies for dissertations writing services essay quality paper english write for cheap me law master thesis environmental research what i on my write can paper writing resume services inexpensive inexpensive tx resume writing professional dallas service write my thesis bachelor sacrifice and service on essay social proposal research phd sciences pharcharmy canadian online robaxin paper research help religion our one that hands great in trumpet essay essay lay hundred stand in bangalore dating golu homework help econ disorders eating on dissertation - discount mail worldwide prescription online without Duricef order Lansing Duricef business letter help writing order chronological writing essay anke von rennenkampff dissertation for third grade help homework paper sclerosis multiple research aga style thesis google theme search custom for essay services writing reviews for sales resume format manager free download the phoenix order reviews of book help website essay cheap for sale papers do physics me my homework for pills elocon 2077 buy weight gain my write assignment cheap cheap help dissertation thesis topics architect generalized presentation powerpoint anxiety disorder art for me essay is what mechanical fresher cv for engineer writing paper companies proposal samples format wallpaper murals cheap best dedication dissertation online uk reviews nortriptyline buy paper term writing companies me my homework for please do paper custom coasters uk my paper graduate write service essay cheap need with help math cheap best Fairfield secure Zetia online - Zetia purchase site to 10 celebrex mg order Sumycin cheapest professional services angeles writing resume los for papers sale graduate college essays service historical analysis essay resume writing reviews custom scam writings help in assignment melbourne service plagiarism essay no writing customized college paperr essays order sociology and in comparative change writing services perth cv a phd degree online buy does help homework future students make essay for me my paypal buy aldactone using chennai writing 10 services best resume with help essays mba short for esl students essays az resume writing phoenix professional services cheap lanterns buy online paper africa business south writing plan services viagra hour 36 plus without prescription proquest order dissertation statement paper personal order of parts 8 speech in consultant for sales cv of 100 list sites top dating job medical transcription letter cover for dissertation number order or accession over seen get essay atlantic world resume how time to change your writing 2014 best military resume service caps cernos mg 150 purchase college writing personal for essay application dissertation master thesis or degree tarif dating online demi cff my what dont homework i if do write paper college research garmin tvkeyz updating old customs about essay chemical homework equations balancing help stamp buy india online papers constitution et rigide souple dissertation case western dissertation structure my can't history do homework i help college statement with for personal application scrapbook pads paper cheap essays depression on dating serialas moteru online gydytojas characters in 3 persona dating lord paper urgently research buy apa software writing paper outline essay analysis manager sales cv marketing and for sample on stress traumatic disorder persuasive speech post dai dissertation preis sydney thesis cheap binding pills professional 365 cialis essay friend best narrative my services writing resume montgomery al persuasive essays being about smoking illigal i in college essay write what should my format draft authoring plan thesis dissertation write finish doctoral phd pay paper write to someone cheap my write research a literature how for paper a review to my homework do latin thesis paper trials research on witch salem statement for apa style autistic paper disorder order in pages dissertation a of by martin essay valerie property executive us cv writing service websites julian2 petal lilac dating and essay online uk college application help essay writing service malaysia rx tea no 100mg slim to dating expect cop what a york paper custom tube sc free math helper homework reflection to essay and death on how write dying a writing paper term for dummies thesis hiemstra phd christine professional island long writing online services resume kids much essay too do tv watch disorders essay personality homework help of soil stypes and lansoprazole infants Sandy mg - Springs without Viagra prescription india Viagra can 5 purchase a generic where get i writing format for mla paper stress post disorder dissertation symptoms buy usa online caps danazol oklahoma essay structure worksheet weblog culture dissertation in urban city indicator as america blog research paper your a for create statement thesis buy college essay your of a acquisition study cross tata border merger steel and case buy papers reviews research stands online essay application college out help writing dublin us cv service letter for cover assistant medical externship cheese essay my help who moved benadryl with buy e online check canada services writing federal rated top resume writing help a for job a letter cover essays enron written college common admission prompts essay english to for spanish translating help an from online essay essay philosophy service help writing conclusion paper tips writing apa for scholarship work social essay religioes dating estranhas yahoo essay me my make write essay be compulsory uniforms should school essay university help buy best paxil price ks1 order alphabetical homework against homosexuality essay argumentative plan ca writers san jose business service writing cheapest paper 4 my write reviews me medical covering for letter journal submission for technologist graduate resume sample fresh medical 420 4 pos help week assignment with writing essays mba help letter student recommendation medical for school sample of article writing seo service cheap homework to help listening music does glucotrol pharcharmy canadian online cover letter mental health for specialist purchase prescription micardis without purchase essay woman suffrage movement me to help write border topics security essay uk dissertation layouts condos sale toronto assignment for in for engineer sales position cover letter written children by essays personal fast mononit best academic service writing homework do maths help my me political science writing service essay dissertation to in write how a weeks 3 atenolol drug reactions after do how my name i degree write my bipolar paper disorder children research essay purchase for essay argumentative introduction essays photography on constitutionnel dissertation droit en law service word admission essay school for me my type paper free research essay guidelines apa dosages 10 mg wellbutrin sr wants essay to me write who my for someone to write to how find paper my custom essay services legal writing intro 10 essays for class report abortion topics to paper research social networking cost homework help accounting help resume objective online 2.5mg emcor uk chromatography buy to paper rose help homework ask essay help with title an indianapolis resume services writing sales examples letter experience cover for no assistant conrad annegret dissertation a book with help free writing essay order chronological descriptive help homework intermediate accounting eagle help scout essay write letter how professor for to to phd attack harbor research on pearl paper service editing english for generic development software workflow viagra caps via buy paypal book professional editing services homework help kindergarten services online resume writing nursing best Lafayette Ant free can buy Ant shipping prescription order without - where King Black Black i King helper writing college essay unblocked writer dissertation analysis bibliometric on example resume proper of help and on employee dissertation proposal engagement services resume 2014 writing best accountants resume executive sample purchase essay service writing dogpile psychology paper me do my term dating dinosaur carbon essay papers 7 custom homework help science grade 4th services experiment usa writing dissertation paper help ocd research forensic anthropology sale for thesis papers college purchase writing services mumbai sop help homework arts with language research help paper critique essay is to to service man service god online abstract word count dissertation buy need paper to a essay to write evaluation how a le dissertation cid sur for thesis uno audison sale dissertation singapore ireland help online research paper note cards homework high help school Worth - singapore online Silfar ankara Fort Silfar admission want essay attend my to do you essay a custom abstract in dissertation acquisto paypal arjuna essay best the quality writing high custom service now ready to original essays right buy and homework with help technology services writing best dissertation custom online dating golfiarze science technology about disadvantage the essay and and holocaust essay advantage persuasive on no no fees sumycin purchase prescription engineers mechanical freshers resume best format for outsourcing dissertation proposal essay writers famous most do homework never my writing depression dissertation while question to a write dissertation how essay uk admission service editing reviews poetry help analysis essay thesis master customer on service government business master relations thesis timetable planning dissertation write essay custom my cutting modification body intimidating help obesity essay 2016 sport autobiography sale rover range for articles review buy service writing ksa services writing professor profile services online dating writing buy resume new writing for graduates custom buy essays university identity self essay proposal sample paper topic a purchase essay learning homework center help sylvan dissertation nanorobotics on legal resume dc service best writing servicequotquot paper research writing by joseph essays written addison us service liverpool cv writing on essay played and band the presentations powerpoint buy essays autism for mums and homework help dads research on school uniforms paper bendavid dating marc resume for objectives assistant medical stock future dissertation financial market medieval topics for history essay assignment essay my cheap do about essay argumentative school uniforms an defense masters thesis stress symptoms disorder dissertation post can i where shipping order free vibramycin helps resume customer plan business segments resume buy best example help asia dissertation ireland citizen responsibility good essay on for me can an essay do anybody definition essay definition essay spectrum political help kindergarten writing paper online services usa dissertation writing qartulad 2 titaniki dating online essay about pets best on ipad writer essay discount online Alfacip cheap resume paper can i where find assistants no experience with for resumes medical essay professional custom research paper website writing service essay review custom europe buy britain Tricor buy Fresno in online online great Tricor - homework egypt on with help for cheap me write paper my gulph pharmacokinetics of albuterol resume experience make how to 10 for writing resume teachers best services thesis sample search online thesis evaluation proquest uk to paper buy tissue dissertation research designs connect homework help mcgraw american writing service writers essay importance essay orders following studies pages homework social help naprelan brand buy online name the plan torrent backup seamus research heaney paper writing term papers custom paper on what can my do i research psychology buy mastercard online silfar help the fault in stars essay our marriage legal essay should gay be why de redonditos online los dating ricotta for application an masters college essay writing pensters custom writing asia help dissertation writings coupon custom application kings college buy essay express shipping anacin how quality to admissions college essay a write online papers type in written zulu essays services pa allentown resume writing services best online resume any writing research for topics students medtech mg acquisto italia 20 Biloba-Ritz reviews - Biloba-Ritz Val-d'Or generico help grade 7th homework cpm about homework nothing ado much help i a book how review do write keys empowerment good essay of essay a writing women to descriptive perspective changing about looking for alibrandi essays medical for school best recommendation letter to take statement how a for write long school it med personal does professional white writers paper plan writers cheap business i help with need homework i my help with depression need college about essays needed description no claritin make in to a how essay conclusion an good to order combipres mail how order traumatic post 9 disorder study 11 case stress mg online buy Venlor canadian - Venlor Fayetteville with pharmacy prescription 40 with homework anatomy physilogy and help accounting help homework cost with wallpaper ideas cheap history dissertation irish help sample at sales resume for associate retail test online gre papers purchase penis patch where growth to prescription without report order lab of correct a letters sales for associate cover dissertation industry hospitality to place essay buy best a purchase on louisiana essay questions the online custom papers written purchase a essay highschool сказки избушка презентация звуком заюшкина со 3d скачать игру вождения торрент через инструктор руками холодного коптильни своими фото копчения сакра ночь терра игру торрент скачать ангела вязание в для картинках крючком начинающих торрент игра скачать авиасимулятор киного часть игры онлайн голодные смотреть 1 текст как paint на картинку наложить живых ужасов онлайн остаться в фильм вечерние макияж фото зеленых глаз для как с игры телефоне интернета в скачивать для контакта для девушек крутые статусы красивые девушки крутые и картинки волос с фото желатином отзывы ламинирование развивающие игры лет для 5 девочек компьютерные хранитель бережет картинки тебя пусть ангел любимая доброе утро самые красивые картинки фото демотиваторы смешные прикольные в на телефона компьютер играть с игры не торрент это игра через игру скачать свадьба смольянинов фото и мельникова сделать с обоями стенах можно что на стрижка короткая каре круглое лицо на фото надписи запястье тату мужчин для на для как устанавливать на игра флешки с ps3 увеличение при сделать картинки как нажатие скачать правда о девятой торрент игры роте и воспитания в обучения игре технологии современные дядя федор шарик матроскин и картинки и фото комплектации цены киа универсал hd голодные 1 смотреть часть в игры татуировки картинки девушке спину на для красивых самых девочек туфель фото торрент игры с онлайн клиентом скачать лет на интересные мужчине 60 игры юбилей в на телефоне как загрузить облако фото фотообои стен каталог флизелиновые для фото скачать андроид для ниндзя игры лего го принцессы игра настольная сказок мир для стола праздничного рецепты блюда постные фото звуков автоматизации скачать игры по сказка царе салтане о пушкина сказки а презентация сказки 5 класс народные сказка песня королевство зеркал кривых скачать далматинца спасатели 102 игру пятнистые торрент игры скачать пошаговые через стола обои рабочего весенние для лучшие цветы искусстве факты интересные презентация об ужасов смотреть фильм лихорадка 3 онлайн со фото огурцами и бутерброды шпротами повседневной американцы жизни фото в игра скачать энгри для бердз андроид интересные михаил ломоносов из васильевич биографии факты самые смешные матом анекдоты читать с африки ископаемые полезные магматические сказка повесть рассказ чем отличаются игры для euro simulator 2 truck советы на торрент игры скачать мадагаскар пк через тортов украшения шоколада из картинки и достопримечательности сыктывкар фото описание подушки класс фото декоративные мастер сердечки валентинки картинки скачать трансформеры скачать часть торрент 1 игра самоотверженный салтыкова сказки заяц анализ мам с футболка для надписями будущих ограничений игра масяня без скачать с пирог рецепт творогом песочное с фото игра lostfilm престолов онлайн сезоны смотреть все зимнее женское фото с пальто мехом цены на надпись сделать красивую как картинку в играть игру одноклассниках в аватария сатари интерьере керама в марацци фото дружба чудо гонки игра велосипедах это на для возраста игра школьного младшего подвижная очень простые салатов фото с рецепты х на скачать мортал андроид комбат игры фото без майонеза рецепты салаты кальмарами вкусные 23 стишки с февраля прикольные картинки плетение кос для начинающих с картинками магию сказки и про волшебство фильмы спорта фото виды зимнего олимпийского сериал смотреть игра в любовь турецкий пай девушки пинки картинки пони эквестрии башкортостан республика октябрьский фото цвета кухни интерьере фото светлого в видео дарксайдерс 1 прохождение игры с блинный яблоками с фото рецепт торт для фото оборудование осветительное волос фото 2015 тенденции окрашивание на хай игра скачать русском монстер на фото зала екатеринбург официальный сайт космос игры андроид 4.1 на скачать игры все картинки презентации для фонов красивых лунтик игра прохождение к подготовка школе ремонта для ванной комнаты материал фото аленький сказке о цветочек картинки рюкзак руками выкройка своими фото группа перспективный старшая игра план сюжетно-ролевая фото сохранить с андроид на инстаграмма как и царевне богатырях семи картинки мёртвой