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STUDIO DIANA NAGLER (@studio_diana_nagler) Instagram Profile Photo
studio_diana_nagler

STUDIO DIANA NAGLER

SimplyScience.ch (@simplyscience.ch) Instagram Profile Photo
simplyscience.ch

SimplyScience.ch

Die "Säulen der Schöpfung" im etwa 7000 Lichtjahre entfernten Adlernebel wurden 1995 vom Hubble Weltraumteleskop festgehalten. Es ist einer der atemberaubendsten und farbenprächtigsten Schnappschüsse des Teleskops. Umso erstaunlicher also, das die Originalaufnahmen der interstellaren Materie schwarz-weiss sind. Woher kommt also die Farbe? Das Hubble Teleskop kann zwar keine farbigen Fotos schiessen, aber es kann die Wellenlänge des Lichts sehr genau messen. Wenn man also drei schwarz-weiss Aufnahmen kombiniert, die je nur die Wellenlänge roten, grünen oder blauen Lichts einfangen, entsteht durch Einfärben mit den der drei jeweiligen Farben und Übereinanderlegen der Aufnahmen ein farbiges Bild. Im Beispiel der "Säulen der Schöpfung" hat es dieser Trick aber noch nicht ganz getan. Den die interstellare Materie, die wir im Bild als eine Art Nebel wahrnehmen, besteht hauptsächlich aus Schwefel, Wasserstoff und Sauerstoff. Da die Wellenlänge des Lichts von Schwefel und Wasserstoff beide im roten Farbbereich sind, würde ein übereinanderlegen der Aufnahmen kein wirklich farbenprächtiges, sondern ein stark rot gefärbtes Bild ergeben. Forscher weisen daher den drei Elementen die Farben rot (Schwefel), grün (Wasserstoff) und blau (Sauerstoff) zu, entsprechend der Rangordnung ihrer Wellenlänge. Legt man nun die Aufnahmen übereinander, entsteht das ikonische Bild der "Säulen der Schöpfung". Eines Nebels aus interstellarer Materie rund 7000 Lichtjahre entfernt und selbst 4 Lichtjahre lang, in der sich neue Sterne unserer Galaxie formen. Bild: @nasa #hubble

Anton Petrov (@whatdamath) Instagram Profile Photo
whatdamath

Anton Petrov

Recent study discovered several new types of pulsating , unusual super hot stars that are only a fraction of the and pulsate regularly⠀ https://buff.ly/2Mw6BTI⠀ ⠀ #hubble

𝕊𝕠𝕦𝕣 𝕋𝕣𝕦𝕥𝕙 (@sour._truth) Instagram Profile Photo
sour._truth

𝕊𝕠𝕦𝕣 𝕋𝕣𝕦𝕥𝕙

Ice cream of the earth Follow @sour._truth for more such contents. Like and Comment your opinion Share with your friends or tag them #hubble          

Pillars of astronomy (@pillarsofastronomy) Instagram Profile Photo
pillarsofastronomy

Pillars of astronomy

Nebulosas planetárias nada tem a ver com planetas. Receberam esse nome por William Herschel em 1780, que descobriu esse tipo de objeto. Embora soubesse que elas não eram planetas, pois não se movimentavam no céu, a sua imagem no telescópio, lembrava muito a imagem dos planetas que eram observados. Com a evolução da Astronomia , pode-se  então observar esses objetos com mais detalhes revelando a estrutura e natureza das nebulosas planetárias. Nebulosas Planetárias são conchas de gás que são aquecidas, ionizadas e iluminadas pela forte radiação da quente estrela presente no seu centro. As nebulosas brilham de forma colorida, devido à presença de diferentes gases. As nebulosas planetárias são fenômenos que duram pouco tempo na evolução estelar e normalmente são expelidas pela estrela na sua fase final de vida. Uma das nebulosas planetárias mais famosas é a Nebulosa do Anel, que brilha de forma intensa nas cores azul-esverdeado, vermelho e laranja; as regiões assumem essas cores, devido à presença de oxigênio, hidrogênio e nitrogênio. #hubble

Imagine that you were a particle, located somewhere in the fabric of spacetime. A short distance away, another particle also exists. Imagine that the only thing that impacts them is the expansion of the Universe. How, then, will this particle move relative to you? If your Universe were filled with radiation, it would expand like the square root of time: the distance between you and this particle scales as ~t^(1/2). If your Universe were filled with matter, it would expand like time to the two-thirds power: the distance between you and this particle scales as ~t^(2/3). But when your Universe inflates, space expands exponentially: like ~e^(Ht), where H is the expansion rate of the Universe.This means that after a certain amount of time, this particle would double its distance from you. Because inflation is not only exponential but also rapid the expansion rate is very large during inflation that doubling only requires somewhere in the neighborhood of 10^-35 seconds. But the defining trait of inflation isn’t its rapidity, since, after all, the early stages of the hot Big Bang may be just as rapid. Instead, the defining trait of inflation is its relentlessness. After 10^-35 seconds, this nearby particle would be twice as far away as it initially was.After 2 × 10^-35 seconds, it would be 4 times its initial distance.After 3 × 10^-35 seconds, it would be 8 times its initial distance.After 10^-34 seconds of inflation, the nearby particle would be 10^24 times as far away as it was initially. After 10^-33 seconds, it would be 10^30 times as far as its initial distance. And after 10^-30 seconds of inflation, this particle would be about 10^30000 times as distant as it was initially.If your Universe began full of particles of any type, they would in extraordinarily short order be driven away from one another so that no two ever saw each other again...nature 🚀 #hubble

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