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Find out astro_nic's Instagram And even if you're not here to stay, I'm happy the universe allowed your soul to stop by

#nightskyphotography #naturephotography #earth #astronomy #universe #astrophotography #naturelovers #darkmatter #nightsky #stars #milkyway #milkywaychasers #milkywayphotography 1434203068639463854_1949372210

And even if you're not here to stay, I'm happy the universe allowed your soul to stop by #nightskyphotography #naturephotography #earth #astronomy #universe #astrophotography #naturelovers #darkmatter #nightsky #stars #milkyway #milkywaychasers #milkywayphotography

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Find out apeiron_universe_'s Instagram Astronomers team up to give first look at birthplaces of most current stars. .
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Image Credit: @thehubblescope / Nasa . 1434202313623797130_1471303724

Astronomers team up to give first look at birthplaces of most current stars. . . . Image Credit: @thehubblescope / Nasa .

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Find out __astronomy__'s Instagram 2200 years ago (200 B.C.), in the most glorious city of its day, Alexandria in Egypt, was the place where for the first time a man not only made the brave claim of a round and not flat Earth, but also proved it.
The man's name, was Eratosthenes. Why, he wondered did the shadow created by two pillars, in two cities 800 kms (500 miles) away from each other, vary in angles.
The Sun's rays are almost parallel as they hit the Earth, due to its proximity to us.
Therefore he observed, when in Syene, on the longest day of the year (21 June) at noon, the Sun was directly overhead and casted no shadow of the pillar on the ground, at the same time, in Alexandria, the pillar casted a distinct shadow.
He thus came to the conclusion that the Earth must be round. For if the Earth was flat, both the pillars with parallel rays, would cast no shadow at the same time. (Yes, he had hired men to calculate and observe everything)
This man, not only came to the brave conclusion of claiming the Earth round, but also, measured the circumference of this sphere.
His idea was a clever one. (Refer to above picture): The angle formed by the shadow of the Alexandrian pillar, was 7°. The geometric law of parallel lines states, that if a line intersects two || lines, then the opposite angles so formed are equal. Therefore, he imagined a long stick extending from the bottom of the pillar, till the centre of the Earth, where it formed an angle of the same measure as the opposite one.
i.e angle A = angle B = 7°.
Now, the distance between the two pillars was about 800 kms. So Eratosthenes concluded that, if 7° of a sphere was equal to 800 kms, multiplying it into 360° must be the complete length or circumference of the Earth.
His answer was 42,000 kms, which is close enough to the correct measurement of a 45,000 kms. 
Eratosthenes is my favourite ancient scientist/mathematician. Who is yours? Please comment. (Picture owned by NASA | Edited/labeled by me) 1434202544233598572_3658833064

2200 years ago (200 B.C.), in the most glorious city of its day, Alexandria in Egypt, was the place where for the first time a man not only made the brave claim of a round and not flat Earth, but also proved it. The man's name, was Eratosthenes. Why, he wondered did the shadow created by two pillars, in two cities 800 kms (500 miles) away from each other, vary in angles. The Sun's rays are almost parallel as they hit the Earth, due to its proximity to us. Therefore he observed, when in Syene, on the longest day of the year (21 June) at noon, the Sun was directly overhead and casted no shadow of the pillar on the ground, at the same time, in Alexandria, the pillar casted a distinct shadow. He thus came to the conclusion that the Earth must be round. For if the Earth was flat, both the pillars with parallel rays, would cast no shadow at the same time. (Yes, he had hired men to calculate and observe everything) This man, not only came to the brave conclusion of claiming the Earth round, but also, measured the circumference of this sphere. His idea was a clever one. (Refer to above picture): The angle formed by the shadow of the Alexandrian pillar, was 7°. The geometric law of parallel lines states, that if a line intersects two || lines, then the opposite angles so formed are equal. Therefore, he imagined a long stick extending from the bottom of the pillar, till the centre of the Earth, where it formed an angle of the same measure as the opposite one. i.e angle A = angle B = 7°. Now, the distance between the two pillars was about 800 kms. So Eratosthenes concluded that, if 7° of a sphere was equal to 800 kms, multiplying it into 360° must be the complete length or circumference of the Earth. His answer was 42,000 kms, which is close enough to the correct measurement of a 45,000 kms. Eratosthenes is my favourite ancient scientist/mathematician. Who is yours? Please comment. (Picture owned by NASA | Edited/labeled by me)

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Find out andrewmalwitzphotography's Instagram My new favorite startrail from my recent trip to the Mark Twain National Forest. Bunch of photos stacked into one. Camera - Nikon D5300 F-stop - f/2.8 Exposure for each photo - 30 seconds ISO - 3200 Focal Length - 11mm Stacking Program - StarStax #astrophotography #astronomy #starttrail #lighttrails #space #sky #marktwainnationalforest #marktwain #trees #planes #planetrails #nikon #nikond5300 #d5300 #stars #missouri 1434201568042924029_4155194761

My new favorite startrail from my recent trip to the Mark Twain National Forest. Bunch of photos stacked into one. Camera - Nikon D5300 F-stop - f/2.8 Exposure for each photo - 30 seconds ISO - 3200 Focal Length - 11mm Stacking Program - StarStax #astrophotography #astronomy #starttrail #lighttrails #space #sky #marktwainnationalforest #marktwain #trees #planes #planetrails #nikon #nikond5300 #d5300 #stars #missouri

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Find out sparsanik's Instagram تصویر مبهوت کننده و حیرت انگیز تلسکوپ هابل از اعماق جهان هستی که در آن کهکشان نهنگ را میبینید...
کهکشان نهنگ یا همان NGC 4631 در صورت فلکی تازی‌ها و فاصله‌ی ۲۵ میلیون سال نوری قرار دارد. این کهکشان که از کنار دیده می‌شود،‌ اندازه‌ای در حدود کهکشان راه‌شیری خودمان دارد. این کهکشان از قسمت سمت راست کمی باریک شده تا شبیه به یک نهنگ به نظر برسد. نزدیک به کهکشان نهنگ و در قسمت بالایی آن، یک کهکشان کوچک به نام NGC 4627 قرار گرفته است. در قسمت بالا و پایین کهکشان نهنگ می‌توان نهرهایی ستاره‌ای را مشاهده کرد. این نهرها باقی‌مانده‌های یک کهکشان کوتوله‌ی همدم هستند که میلیاردها سال پیش از بین رفت.
NGC 4631 is a spiral galaxy found only 25 million light-years away, toward the well-trained northern constellation Canes Venatici. Seen egde-on, the galaxy is similar in size to the Milky Way. Its distorted wedge shape suggests to some a cosmic herring and to others its popular moniker, The Whale Galaxy. The large galaxy's small, remarkably bright elliptical companion NGC 4627 lies just above its dusty yellowish core, but also identifiable are recently discovered, faint dwarf galaxies within the halo of NGC 4631. In fact, the faint extended features below (and above) NGC 4631 are now recognized as tidal star streams. The star streams are remnants of a dwarf satellite galaxy disrupted by repeated encounters with the Whale that began about 3.5 billion years ago. Even in nearby galaxies, the presence of tidal star streams is predicted by cosmological models of galaxy formation, including the formation of our own Milky Way.
#xray #science #nasa #galaxy #nebula #solarsystem #astronomy #stars #space #hubble #telescope #milkway #ناسا #نجوم #منظومه_شمسی #کهکشان #راه_شیری #سحابی #فضا #تلسکوپ_هابل #ستارگان #sparsanik #planet #سیاره #اخترشناسی #زمین #کیهان #جهان_هستی #علم 1434200828873072560_2061444252

تصویر مبهوت کننده و حیرت انگیز تلسکوپ هابل از اعماق جهان هستی که در آن کهکشان نهنگ را میبینید... کهکشان نهنگ یا همان NGC 4631 در صورت فلکی تازی‌ها و فاصله‌ی ۲۵ میلیون سال نوری قرار دارد. این کهکشان که از کنار دیده می‌شود،‌ اندازه‌ای در حدود کهکشان راه‌شیری خودمان دارد. این کهکشان از قسمت سمت راست کمی باریک شده تا شبیه به یک نهنگ به نظر برسد. نزدیک به کهکشان نهنگ و در قسمت بالایی آن، یک کهکشان کوچک به نام NGC 4627 قرار گرفته است. در قسمت بالا و پایین کهکشان نهنگ می‌توان نهرهایی ستاره‌ای را مشاهده کرد. این نهرها باقی‌مانده‌های یک کهکشان کوتوله‌ی همدم هستند که میلیاردها سال پیش از بین رفت. NGC 4631 is a spiral galaxy found only 25 million light-years away, toward the well-trained northern constellation Canes Venatici. Seen egde-on, the galaxy is similar in size to the Milky Way. Its distorted wedge shape suggests to some a cosmic herring and to others its popular moniker, The Whale Galaxy. The large galaxy's small, remarkably bright elliptical companion NGC 4627 lies just above its dusty yellowish core, but also identifiable are recently discovered, faint dwarf galaxies within the halo of NGC 4631. In fact, the faint extended features below (and above) NGC 4631 are now recognized as tidal star streams. The star streams are remnants of a dwarf satellite galaxy disrupted by repeated encounters with the Whale that began about 3.5 billion years ago. Even in nearby galaxies, the presence of tidal star streams is predicted by cosmological models of galaxy formation, including the formation of our own Milky Way. #xray #science #nasa #galaxy #nebula #solarsystem #astronomy #stars #space #hubble #telescope #milkway #ناسا #نجوم #منظومه_شمسی #کهکشان #راه_شیری #سحابی #فضا #تلسکوپ_هابل #ستارگان #sparsanik #planet #سیاره #اخترشناسی #زمین #کیهان #جهان_هستی #علم

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Find out mamppu's Instagram 🌙🌙🌙. in love with my new purchase from the amazing @vincentvandoodle store. #vangogh #vincentvangogh  #astronomy #lifequotes 1434198601646982202_40013470

🌙🌙🌙. in love with my new purchase from the amazing @vincentvandoodle store. #vangogh #vincentvangogh #astronomy #lifequotes

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Find out apeiron_universe_'s Instagram In this computer-generated image, a red oval marks the disk of our Milky Way galaxy and a red dot shows the location of the Sagittarius dwarf galaxy. The yellow circles represent stars that have been ripped from the Sagittarius dwarf and flung far across space. Five of the 11 farthest known stars in our galaxy were probably stolen this way. 
Image Credit: Marion Dierickx / CfA / Astronomy Now. 1434197899403930857_1471303724

In this computer-generated image, a red oval marks the disk of our Milky Way galaxy and a red dot shows the location of the Sagittarius dwarf galaxy. The yellow circles represent stars that have been ripped from the Sagittarius dwarf and flung far across space. Five of the 11 farthest known stars in our galaxy were probably stolen this way. Image Credit: Marion Dierickx / CfA / Astronomy Now.

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Find out astronomia_pt's Instagram Em 23 de janeiro de 2003, a Pioneer 10 fez a sua última transmissão para a Terra. Agora a sonda navega na imensidão do espaço, já nos confins do sistema solar.
A distinção de ser o primeiro artefato humano a aventurar-se além dos planetas conhecidos do Sistema Solar é apenas uma na longa lista de pioneirismo para este embaixador espacial, incluindo; A primeira espaçonave a percorrer o cinturão de asteróides e explorar o Sistema Solar externo, a primeira espaçonave a visitar Júpiter, e a primeir a a usar a gravidade de um planeta para mudar seu curso e alcançar a velocidade de escape do sistema solar.

Foto: NASA

#pioneer10 #pioneer #voyager #nasa #astronomiaemportugues #astronomia #astronomy #astronautica 1434197567642958528_2283824317

Em 23 de janeiro de 2003, a Pioneer 10 fez a sua última transmissão para a Terra. Agora a sonda navega na imensidão do espaço, já nos confins do sistema solar. A distinção de ser o primeiro artefato humano a aventurar-se além dos planetas conhecidos do Sistema Solar é apenas uma na longa lista de pioneirismo para este embaixador espacial, incluindo; A primeira espaçonave a percorrer o cinturão de asteróides e explorar o Sistema Solar externo, a primeira espaçonave a visitar Júpiter, e a primeir a a usar a gravidade de um planeta para mudar seu curso e alcançar a velocidade de escape do sistema solar. Foto: NASA #pioneer10 #pioneer #voyager #nasa #astronomiaemportugues #astronomia #astronomy #astronautica

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Find out futuresciencetm's Instagram Aynı ilgi alanından arkadaş edinip derin bir sohbete dalmak... Işte bu hayalleri olan bir genç için muazzam bir duygu. Bu yüzden sizleri facebook grubumuza, aynı hayalleri paylaştığınız insanları keşfetmeye çağırıyoruz. 🙆🙇 #dream #friends #science #astronomy #space #FST 1434195937869261471_3765892893

Aynı ilgi alanından arkadaş edinip derin bir sohbete dalmak... Işte bu hayalleri olan bir genç için muazzam bir duygu. Bu yüzden sizleri facebook grubumuza, aynı hayalleri paylaştığınız insanları keşfetmeye çağırıyoruz. 🙆🙇 #dream #friends #science #astronomy #space #fst

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Find out apeiron_universe_'s Instagram ALMA reveals otherwise invisible details of our Sun, including view inside the dark, contorted centre of a sunspot. .
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Source & Image Credit: Astronomy Now. 1434195222095931465_1471303724

ALMA reveals otherwise invisible details of our Sun, including view inside the dark, contorted centre of a sunspot. . . . Source & Image Credit: Astronomy Now.

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Find out meganism411's Instagram Amazing photo of the Orion Nebula taken by my dad through his telescope ✨🔮 amazing! #astronomy #orionnebula #telescope #atmosphere #space #beautiful 1434195229653553449_354097455

Amazing photo of the Orion Nebula taken by my dad through his telescope ✨🔮 amazing! #astronomy #orionnebula #telescope #atmosphere #space #beautiful

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Find out _astronomy_life_'s Instagram L'LHC, o Large Hadron Collider, è un acceleratore di particelle, il più potente mai esistito, è situato a Ginevra, in Svizzera, presso la sede del CERN. I componenti più importanti dell'LHC sono gli oltre 1600 magneti superconduttori in lega i niobio e titano raffreddati ad una temperatura di 1,9 K, o -271,25 Celsius, da elio super fluido e il campo magnetico prodotto è di 8 tesla. Le finalità scentifiche sono le seguenti:
-L'origine della massa dei barioni attraverso plasma di Quark e gluoni;
-La scoperta del Bosone di Higgs;
-La rivelazione della materia/energia oscura, che costituisce il 95% dell'universo;
-l'esistenza delle particelle supersimmetriche;
-l'affermazione della teoria delle stringhe;
-quali possono essere le violazioni di CP;
-il quark top.
L'LHC cesso il suo lavoro nel 2013 per manutenzioni e ripristinò la sua attività lavorativa non molto tempo fa.#nuclear #star #galaxy #astronomia #astronomy 1434194543724708197_4474159343

L'LHC, o Large Hadron Collider, è un acceleratore di particelle, il più potente mai esistito, è situato a Ginevra, in Svizzera, presso la sede del CERN. I componenti più importanti dell'LHC sono gli oltre 1600 magneti superconduttori in lega i niobio e titano raffreddati ad una temperatura di 1,9 K, o -271,25 Celsius, da elio super fluido e il campo magnetico prodotto è di 8 tesla. Le finalità scentifiche sono le seguenti: -L'origine della massa dei barioni attraverso plasma di Quark e gluoni; -La scoperta del Bosone di Higgs; -La rivelazione della materia/energia oscura, che costituisce il 95% dell'universo; -l'esistenza delle particelle supersimmetriche; -l'affermazione della teoria delle stringhe; -quali possono essere le violazioni di CP; -il quark top. L'LHC cesso il suo lavoro nel 2013 per manutenzioni e ripristinò la sua attività lavorativa non molto tempo fa. #nuclear #star #galaxy #astronomia #astronomy

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Find out ecurlis25's Instagram ...and finally today is museum day! ☺️👌💗. #smithsonian #airandspacemuseum #einstein #moon #love #astronomy #stars #geek 1434193059872992653_36591621

...and finally today is museum day! ☺️👌💗. #smithsonian #airandspacemuseum #einstein #moon #love #astronomy #stars #geek

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Find out dailyhorcruxes's Instagram And all along the corridor the statues and suits of armour jumped down from their plinths, and from the echoing crashes from the floors above and below, Harry knew that their fellows throughout the castle had done the same... Cheering and yelling, the horde of moving statues stampeded past Harry; some of them smaller, others larger than life. There were animals too, and the clanking suits of armour brandished swords and spiked balls on chains.
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What is your favourite McGonagall line?
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"I've always wanted to do that spell"
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#gryffindor #slytherin #hufflepuff #ravenclaw #pottermore #hp #hogwarts #magic #harrypotter #hermionegranger #ronweasley #lunalovegood #chochang #dracomalfoy #jkrowling #muggle #half-blood #pureblood #muggleborn #prejudice #defenceagainstthedarkarts #divination #astronomy
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Daily Horcruxes 1434192911989638306_4341237263

And all along the corridor the statues and suits of armour jumped down from their plinths, and from the echoing crashes from the floors above and below, Harry knew that their fellows throughout the castle had done the same... Cheering and yelling, the horde of moving statues stampeded past Harry; some of them smaller, others larger than life. There were animals too, and the clanking suits of armour brandished swords and spiked balls on chains. . . What is your favourite McGonagall line? . . "I've always wanted to do that spell" . . #gryffindor #slytherin #hufflepuff #ravenclaw #pottermore #hp #hogwarts #magic #harrypotter #hermionegranger #ronweasley #lunalovegood #chochang #dracomalfoy #jkrowling #muggle #half-blood #pureblood #muggleborn #prejudice #defenceagainstthedarkarts #divination #astronomy . . Daily Horcruxes

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Find out mrshiddiq's Instagram Constellations Scorpio & The Antares Star as Alpha Scorpio

Sedikit info :
Rasi bintang Scorpio adalah Zodiak ku :v

Antares adalah bintang super raksasa merah di rasi bintang scorpio dalam galaksi Bima Sakti dan bintang paling terang ke-16 pada langit malam (kadang-kadang didaftarkan sebagai paling terang ke-15). Bersama dengan Aldebaran, Spica, dan Regulus, bintang ini merupakan salah satu dari empat bintang paling terang di dekat ekliptika.Karena bintang ini sangat besar,bintang yang dalam tata surya terbesar yaitu Matahari sangat kecil dibanding Antares yang sangat besar.

Nih ad fakta unik tentang Antares sebagai alpha Scorpio :

1. Antares berjarak 550 tahun cahaya dari Bumi dan bintang paling terang di konstelasi Scorpio. 
2. Antares adalah sistim dengan dua bintang yang terdiri dari bintang supergiant merah Antares A dan bintang yang lebih kecil tapi lebih panas Antares B.

3. Antares B 10 kali lebih besar dari Matahari dan 150 kali lebih terang dari Matahari kita,tetapi karena dia berdampingan dengan bintang induknya yang sangat besar, menyebabkan Antares B tidak dapat dilihat tanpa bantuan teleskop.

4. Antares 10.000 kali lebih terang dari Matahari. 
5. Bintang-bintang besar seperti Antares membakar bahan bakar mereka sangat cepat, sebagai hasilnya mereka hidup beberapa juta tahun.

6. Antares saat ini berusia sekitar 12 juta tahun dan mendekati akhir hidupnya dan diperkirakan akan meledak menjadi Supernova dalam jutaan tahun kemudian.

7. Karena warna bintang ini berwarna merah seperti Mars, orang Yunani kuno menamakannya Antares (sama dengan-Ares) - ("sama dengan-Mars"). Namun, beberapa sarjana berspekulasi bahwa bintang ini mungkin telah dinamai oleh orang Arab terlebih dahulu dengan nama Antar , atau Antarah bin Syaddad, seorang pahlawan Arab.

8. Antares A memiliki radius 850 kali lebih besar dari Matahari. Jika ditempatkan di Tata Surya, tepi bintang ini akan mencapai orbit luar Mars.

9. Antares A diperkirakan memiliki massa 18 kali lebih besar dari massa Matahari.

10. Antares A diperkirakan memiliki suhu permukaan sekitar 3000C (5400 F), panasnya hanya setengah dari panas Matahari.

#astronomy #astrophotography #rasibintang #astronaut #kur 1434191061849087090_3779947184

Constellations Scorpio & The Antares Star as Alpha Scorpio Sedikit info : Rasi bintang Scorpio adalah Zodiak ku :v Antares adalah bintang super raksasa merah di rasi bintang scorpio dalam galaksi Bima Sakti dan bintang paling terang ke-16 pada langit malam (kadang-kadang didaftarkan sebagai paling terang ke-15). Bersama dengan Aldebaran, Spica, dan Regulus, bintang ini merupakan salah satu dari empat bintang paling terang di dekat ekliptika.Karena bintang ini sangat besar,bintang yang dalam tata surya terbesar yaitu Matahari sangat kecil dibanding Antares yang sangat besar. Nih ad fakta unik tentang Antares sebagai alpha Scorpio : 1. Antares berjarak 550 tahun cahaya dari Bumi dan bintang paling terang di konstelasi Scorpio. 2. Antares adalah sistim dengan dua bintang yang terdiri dari bintang supergiant merah Antares A dan bintang yang lebih kecil tapi lebih panas Antares B. 3. Antares B 10 kali lebih besar dari Matahari dan 150 kali lebih terang dari Matahari kita,tetapi karena dia berdampingan dengan bintang induknya yang sangat besar, menyebabkan Antares B tidak dapat dilihat tanpa bantuan teleskop. 4. Antares 10.000 kali lebih terang dari Matahari. 5. Bintang-bintang besar seperti Antares membakar bahan bakar mereka sangat cepat, sebagai hasilnya mereka hidup beberapa juta tahun. 6. Antares saat ini berusia sekitar 12 juta tahun dan mendekati akhir hidupnya dan diperkirakan akan meledak menjadi Supernova dalam jutaan tahun kemudian. 7. Karena warna bintang ini berwarna merah seperti Mars, orang Yunani kuno menamakannya Antares (sama dengan-Ares) - ("sama dengan-Mars"). Namun, beberapa sarjana berspekulasi bahwa bintang ini mungkin telah dinamai oleh orang Arab terlebih dahulu dengan nama Antar , atau Antarah bin Syaddad, seorang pahlawan Arab. 8. Antares A memiliki radius 850 kali lebih besar dari Matahari. Jika ditempatkan di Tata Surya, tepi bintang ini akan mencapai orbit luar Mars. 9. Antares A diperkirakan memiliki massa 18 kali lebih besar dari massa Matahari. 10. Antares A diperkirakan memiliki suhu permukaan sekitar 3000C (5400 F), panasnya hanya setengah dari panas Matahari. #astronomy #astrophotography #rasibintang #astronaut #kur

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