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          Stephen Hawking's Nurse Banned After Multiple Misconduct Charges      Cache   Translate Page      
The nurse who cared for late British astrophysicist Stephen Hawking was on Tuesday banned for failing "to provide the standards of good, professional ...
          The Dumping Grounds      Cache   Translate Page      

How I Became An International Cocaine Trafficker   The new Aladdin trailer has redeems itself   Breakfast In The 18th Century   This is what an astrophysics exam looks like at MIT   Solitary confinement has severe psychological effects. This video follows a 21 year old kid through a five month process  

The post The Dumping Grounds appeared first on Caveman Circus.

          There’s a new theory about the strange asteroid Oumuamua, and aliens aren’t involved      Cache   Translate Page      
One of the strangest astronomy stories of the past few years is the sudden appearance of what scientists believe is the first interstellar object ever to be detected in our solar system. The cigar-shaped space rock known as Oumuamua puzzled scientists who attempted to explain what it was and where it may have originated, and there are still more questions than answers. At first, researchers couldn't decide whether or not it was an asteroid or a comet, and then debate raged over why Oumuamua appeared to actually speed up after it swung around the Sun and headed back into space. That last point is still the subject of ongoing research, and a new theory to explain its acceleration is set to appear in Astrophysical Journal Letters. Some fringe astronomers have proposed that the object was actually some kind of extraterrestrial ship, or perhaps just part of one, and that its odd behavior can be explained by the fact that it is equipped with some kind of propulsion technology. This new paper doesn't venture into that highly theoretical territory, but instead seeks to explain Oumuamua's strange acceleration by painting out own Sun as the culprit. In the paper, graduate students from Yale and Caltech propose that Oumuamua sped up due to the effects of the sun's rays on its exposed side. The object was observed tumbling through space, and the researchers think it's possible that the light on its Sun-facing side may have been enough to cause a jet of water vapor to develop on its surface. As the object tumbled, the sides facing our star may have continued to spew water vapor whenever the sunlight struck it, continuing to push it to higher and higher speeds. At this point it's impossible to say whether this or any other theory about the bizarre asteroid holds water. It appeared out of nowhere and left just as quickly, giving scientists very little time to look for clues that could explain its behavior. Still, it's an interesting theory that would explain Oumuamua's change in speed, and seemed at least a bit more plausible than aliens.
          Lecturer /Senior Lecturer/Reader in Astrophysics      Cache   Translate Page      

Lecturer /Senior Lecturer/Reader in Astrophysics

Job number: ACAD103847
Division/School: School of Physics
Contract type: Open Ended
Working pattern: Full time
Salary: Grade J (£37,345-£42,036), Grade K (£43,267-48,677), Grade L (£51,630-£58,089)
Closing date for applications: 07-Apr-2019

The University of Bristol seeks an outstanding candidate for a permanent academic appointment within the Astrophysics theme in the School of Physics.

The successful candidate will carry out world-…

          Hawking's nurse struck off over care failings      Cache   Translate Page      
LONDON: The nurse who cared for late British astrophysicist Stephen Hawking was on Tuesday (Mar 12) banned for failing "to provide the standards of good, professional care that we expect and Professor Hawking deserved". Britain's Nursing and Midwifery Council (NMC) made the ruling at a hearing ...
          Will astrophysicist Barbie do more harm than good for young girls?      Cache   Translate Page      

Is astrophysicist Barbie just another cultural message of unattainable perfection?

          Kosmische Experimente - Wie schwere Elemente im Universum entstehen      Cache   Translate Page      
Astrophysiker untersuchen Protoneneinfang in einem Ionenspeicherring
          Trump's 2020 NASA Budget Would Cancel Space Telescope, Earth Science Missions (Again)      Cache   Translate Page      

The Trump administration's federal budget request for 2020 proposes the cancellation of three NASA science missions: the Wide-Field Infrared Survey Telescope (WFIRST) and two Earth science missions.

This isn't the first time the Trump administration has tried to nix WFIRST, a $3.2 billion flagship-class astrophysics mission that has already had to grapple with budget cuts. In its fiscal year 2019 budget proposal, the Trump administration sought to end that mission along with five other Earth science missions — but the Senate voted to give WFIRST the funding it needed to stay on track for a launch in 2025.

According to NASA's summary of the budget request, the Trump administration is proposing "to terminate the WFIRST mission and instead focus on completing the delayed James Webb Space Telescope," another flagship-class project that is over budget and behind schedule.

          #23 - A Wider Horizon      Cache   Translate Page      
Cecilia Payne-Gaposchkin – groundbreaking astrophysicist and first woman to head a department at Harvard University (1900-1979)

While waiting for the rest to reach your height
You graded faith to mark it dubious,
Yet labelled inspiration numinous,
And showed how heavenly bodies talk at night.
Where others trudged in darkness, you saw light;
Where they stayed safe you dared the luminous,
Found early on that Fear kills Curious
And learned to keep achievements out of sight.

But those before you taught resilience
And some fires can’t be hidden – that’s the truth:
The skies blaze messages not of this earth.

They finally unveiled your proper worth;
Soft voices hailed the insight of your youth.
You changed the ways we value brilliance.


Incidentally, the Wikipedia entry is pretty dry – I also recommend looking at quotes attributed to her, for example: here, which last is where the title of the poem comes from.

(And yes: I’ve screwed with the proper rhyme scheme because sod Petrarch I’m a creative, that’s why...)

          Wissenschaft trifft Bares: Großbritannien würdigt Stephen Hawking mit neuer 50-Pence-Münze      Cache   Translate Page      
Preview Die Münzstätte des Vereinigten Königreichs hat eine neue 50-Pence-Münze zu Ehren des renommierten britischen Wissenschaftlers Stephen Hawking geprägt. Mit dem Design der Münze würdigten ihre Schöpfer die Pionierarbeit des Astrophysikers bei der Erforschung von Schwarzen Löchern.
           THE TRUMP AND TRIBE FILE: Digest of reports!      Cache   Translate Page      
MONDAY, MARCH 11, 2019

With our plans for the rest of the year:
Yesterday, Frans de Waal authored an essay in the New York Times Sunday Review.

Most recently, de Waal is the author of the 2016 Times best-seller, Are We Smart Enough to Know How Smart Animals Are? In the identity line in yesterday's paper, he was identified thusly:

"Dr. de Waal is a primatologist who studies chimps and their relations."

In yesterday's essay, de Waal mused about the emotional experiences of non-human animals, not excluding your pet dog. In line with our recent focus on "the rational animal," we were struck by his closing paragraph:
DE WAAL (3/10/19): For the longest time, science has depicted animals as stimulus-response machines while declaring their inner lives barren. This has helped us sustain our customary “anthropodenial”: the denial that we are animals. We like to see ourselves as special, but whatever the difference between humans and animals may be, it is unlikely to be found in the emotional domain.
We humans "like to see ourselves as special," de Waal puckishly says. This resembles our own pronouncement, in which we've poetically claimed that we humans may perhaps be inclined to "see ourselves from afar."

We humans! At least in the west, we've tended to think that we alone possess a "soul"—even that we alone are conscious. With respect to that latter point, did Descartes really conduct vivisection experiments on live animals while assuring horrified onlookers that his subjects' (apparent) screams of pain were really just an illusion? sees to suggest that he did. Other sources seem to say that he probably didn't. But as part of our persistent attempt to "see ourselves as special," we humans, at least in the west, have tended to revel in this self-flattering claim, as translated from Aristotle:

"Man [sic] is the rational animal."

What did Aristotle actually mean by his famous translated claim? We can't tell you that! But the claim, as commonly understood, has served as part of our species' tendency to adopt the stance de Waal calls "anthropodenial."

As commonly understood, the claim says this: We're the "rational" ones over here!

At any rate, we humans! Just how "rational" do we turn out to be, setting aside our capacity for inventing technologies which actually work?

In the course of this year, we've suggested that it might be useful to adopt a skeptical stance with respect to the extent of our species' "rational" impulses and abilities. We've even dared to make this suggestion:

The irrationality isn't all located Over There, in the tents of The Others! You'll also find a lot of sub-rational conduct within our own liberal/progressive tents; at the highest ends of the upper-end press corps; and even among the most celebrated thinkers within our universities.

It's isn't just Rush and Sean, we've suggested. Given the "tribodenialism" known to all our species' tribes, this suggestion is hard to swallow for many folk Over Here.

How rational is "the rational animal?" For ourselves, we've been surprised by how instructive that question has turned out to be.

When we build a framework out of that question, can the duck start to look like a rabbit, perhaps in a bit of a paradigm shift? Again and again, we'd say that the answer is yes.

With that in mind, we plan to explore several topics in the weeks to come, even as we comment in passing on the press corps' attempts to keep us up to date 1) on who may have had consensual sex with whom, on one alleged occasion, back in 2006; 2) on the romantic behavior and marital status of Hunter Biden, Joe Biden's son; and 3) on the constantly shifting odds that Paul Manafort will take his last breath in prison.

That last topic has become the ghoulish focus of our tribe's favorite "cable news" show. Perhaps we're neither as moral, nor as bright, as we tend to think.

For ourselves, we don't take pleasure in dreaming about the future suffering of others. With that in mind, we'll be exploring such topics as these as the year proceeds:

Those brutal achievement gaps:

We've often claimed that nobody cares about the brutal "achievement gaps" which help define the current state of American public schools. Needless to say, every good liberal knows that this is a ludicrous claim because we so deeply care.

It doesn't look that way to us! In pursuit of this claim, we'll focus on the "Too Small to Fail" project of the much-maligned Clinton Foundation, and on the underlying question of the so-called "30 million word gap."

Is there really such a gap? If so, how can it be addressed? Truth to tell, nobody cares! Based on prevailing evidence, nobody gives a fig about that, or about much of anything else.

Mario Livio's book:

According to the leading authority, Mario Livio is an Israeli-American astrophysicist—and an author of works that popularize science and mathematics. From 1991 through 2015 he was an astrophysicist at the Space Telescope Science Institute, which operates the Hubble Space Telescope.

Stating the obvious, Livio knows a ton of physics and math. But though he's a ranking astrophysicist, he actually isn't a ranking "philosopher" or a ranking logician. We think this intriguing fact comes through loud and clear in his fascinating book for general readers, Is God A Mathematician? (It's not a religious text.)

How poorly do our leading mathematicians and physicists reason when they wander outside the confines of their specialized fields? In our view, it's important and interesting to note the fact that they tend to reason remarkably poorly. We expect to start exploring Livio's book as early as next week.

What the later Wittgenstein said:

The later Wittgenstein wrote about these remarkable gaps in logic and reasoning. He said these gaps in reasoning are especially prevalent "when doing philosophy."

Unfortunately, Wittgenstein's writing was always quite opaque. He wasn't kidding when he said the following in the preface to Philosophical Investigations:

"I should have liked to have produced a good book. This has not come about, but the time is past in which I could improve it."

In our view, that wasn't the inscrutable modesty of a "philosophical" genius. Wittgenstein's book is quite hard to interpret and apply. In line with our study of the way our species' "rational" faculty breaks down at the highest intellectual levels, we'll be showing you one way to apply the later Wittgenstein's work as the year proceeds.

By the way, what thanks did the later Wittgenstein get for providing this valuable service? As we've noted in the past, Professor Horwich claims that "professional philosophers" have largely thrown the later Wittgenstein under the bus because he claimed that the bulk of their work was built upon "mere pseudo-problems, the misbegotten products of linguistic illusion and muddled thinking."

Could such claims about our leading intellectuals possibly be accurate? Anthropodenialism to the side, we plan to suggest that it could be and frequently is!

But wait—there's even more:

In the course of this exploration, we'll take you to the world of the Harvard philosophy department, circa 1969. Readers have been fascinated by Tara Westover's "Education." We think this other alternative education is worth reviewing too.

These topics should start next week. All this week, starting tomorrow, we're going to be looking at a timely topic: What Trump Actually Said.

Prediction: Your lizard is going to rise in anger at every word we write on this topic. That said, would your lizard have so much power if we humans, and we liberals, were as sharp as we've constantly said?

Last week, we wrote about Trump and Tribe. Granted, those reports were useless, but they went exactly like this:
Tuesday, March 5: Michael Cohen knew what to say! Our tribe's pursuit of Trump.

Wednesday, March 6: Everybody knows what to say! Wallace hears a hoo.

Thursday, March 7: I know you are, but what am I? Tribal cried abound!

Friday, March 8: Mister Trump gains as Dems denounce hate! Tomasky makes war on The Others.
Starting tomorrow, What Trump Really Said. Lizards, start your engines! Prepare for a week of wrecks!

          ETs poderiam povoar galáxia mais rápido do que se pensava, diz estudo      Cache   Translate Page      
Via Láctea, em foto tirada no ano de 2009 (Foto: NASA)


É fácil se perder olhando para o céu noturno. Principalmente porque ele é o símbolo mais explícito que temos da vastidão do universo. Para se ter uma ideia, em uma noite de céu aberto, podemos ver até 2,500 estrelas, o que corresponde a apenas um centésimo de milionésimo do total delas em nossa galáxia. Em relação a nós, quase todas estão a uma distância que corresponde a somente 1% do diâmetro da Via Láctea (pouco menos de mil-anos luz). 

Diante da imensidão e de nossa pequenitude, não é a toa que o físico Enrico Fermi, em 1950, foi o primeiro a se perguntar: “onde está todo mundo?”. Ele apresentou o que ficou conhecido como o Paradoxo de Fermi, que é a contradição entre a grandeza do universo e o fato do ser humano ainda não ter encontrado vida avançada em nenhum lugar além da terra. 

Já houve muita especulação para solucionar tal paradoxo. Mas um novo estudo liderado pelo astrônomo Jonathan Carroll-Nellenback, da Universidade de Rochester, e revisado pelo The Astrophysical Journal, refutou teorias anteriores de alguns estudiosos sobre o assunto. De acordo com a descoberta, seria possível povoar uma galáxia mais rapidamente do que se pensava. Isso se aconteceria através dos movimentos estelares, que serviriam como distribuidores de vida. 

Além disso, segundo a pesquisa, a nossa solidão não seria tão paradoxal assim: experimentos determinaram que há uma variabilidade natural. Isso significa que as galáxias às vezes podem ser dominadas, e outras vezes, não – o que acabaria de vez com as dúvidas a respeito do Paradoxo de Fermi.

Em busca de respostas

Os pesquisadores fizeram simulações com diferentes densidades de estrelas, civilizações em estado inicial, velocidades de naves e outras variáveis. Assim, determinaram que há um meio termo entre aquelas galáxias que são silenciosas, vazias ou que estão cheias de vida. 

NGC 595, nebulosa da Galáxia do Triângulo (Foto: NASA, ESA, and M. Durbin, J. Dalcanton, and B. F. Williams (University of Washington))


Para eles, é possível que a Via Láctea seja parcialmente – ou totalmente – povoada. Há até mesmo a possibilidade de alguns exploradores extraterrestres terem visitado a galáxia no passado; porém, eles já teriam sido dizimados e nós não teríamos registros deles. Nosso Sistema Solar também pode estar entre vários outros sistemas já visitados, mesmo que nos últimos milhões de anos não tenhamos recebido nenhuma visita comprovadamente registrada.

Foi considerada pelos estudiosos a velocidade de um hipotético povoado avançado via sondas de velocidade finita – isso para determinar se uma galáxia poderia se tornar cenário para explorações espaciais em escalas de tempo menores do que a própria idade dela. Os cientistas também incluiram o efeito de movimentos estelares sobre o comportamento a longo prazo do povoado. 

Refutando Carl Sagan e William Newman

Uma das teorias mais famosas a refutar o Paradoxo de Fermi foi a de Carl Sagan e William Newman, do ano de 1981. Eles escreveram um relatório defendendo que a humanidade precisaria de paciência: ninguém teria nos visitado, pois qualquer forma de vida estaria muito longe. E levaria muito tempo para que uma espécie inteligentemente suficiente evoluísse a ponto de construir naves espaciais.

Newman e Sagan estariam errados, de acordo com o novo estudo liderado por Jonathan Carroll-Nellenback, já que, ao contrário do que a dupla de cientistas pensou, não levaria tanto tempo para que civilizações com capacidade de realizar viagens espaciais atravessassem uma galáxia. Os movimentos estelares também são capazes de distribuir vida – e em escalas bem menos demoradas do que a idade de uma galáxia. Um exemplo de viagem estelar seria o da estrela central do nosso Sistema Solar. “O Sol já atravessou a Via Láctea 50 vezes”, contou Carroll-Nellenback. 

Galáxia espiral M100  (Foto: NASA)


Civilizações muito avançadas têm maior probabilidade de crescer devagar, segundo Newman e Sagan. Por isso, muitas sociedades provavelmente teriam desaparecido antes mesmo de atingir as estrelas. “Essa ideia confunde a expansão das espécies como um todo com a sustentabilidade de alguns povoados individuais”, discordou Jason Wright.

Leia Mais:
+ NASA transforma galáxias em música – e o resultado é bem estranho
+ Galáxia "fantasmagórica" pode ajudar a desvendar origem do universo

Discordando de Michael Hart 

Outros pesquisadores, por sua vez, teorizaram que espécies tecnologicamente evoluídas, quando se destacam, facilmente se autodestroem. Logo, alienígenas poderiam ter nos visitado no passado; ou, talvez, estariam nos evitando de propósito, desconfiados dos seres terrestres.

Em um relatório de sua pesquisa de 1975, o astrofísico da NASA Michael Hart ainda duvidou da existência de quaisquer alienígenas, o que explicaria a ausência de qualquer visita por parte deles. 

Hart calculou que levaria alguns milhões de anos para que uma única espécie com capacidade de viajar pelo espaço conseguisse povoar uma galáxia. Esse tempo poderia ser estimado em, no mínimo, 650.000 anos. Logo, a ausência das espécies que não foram descobertas (o que Hart chamava de “Fato A”) significaria apenas que elas não existem. 

Jason Wright e Carroll-Nellenback, dizem, por outro lado, que somente o fato de que ainda não recebemos visitantes interestelares não permite que concluamos a inexistência deles. Para eles, algumas civilizações se expandem e tornam-se interestelares; mas elas não duram para sempre. Além disso, nem todos os planetas são habitáveis e algumas estrelas não seriam a melhor escolha para um destino.

Povoações do futuro

Adam Frank, da Universidade de Rochester, que também contribuiu com o estudo de Carroll-Nellenback, fala ainda do “Efeito Aurora”, no qual os “colonizadores” chegam a habitar um planeta, mas não sobrevivem às suas condições. 

Frank defende que precisamos procurar cada vez mais por sinais de alienígenas. Eles poderiam se tornar mais visíveis nas próximas décadas, à medida que telescópios descobrem cada vez mais exoplanetas e começam a espiar as atmosferas deles. “Estamos entrando em uma era na qual haverá reais dados acerca da vida em outros planetas”, defendeu Frank. “Nesse momento em que vivemos, isso não poderia ser mais relevante”.

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          Астрономы раскрыли крайне необычную историю побега звезды из Галактики      Cache   Translate Page      
Наблюдения за одной из звезд-«изгоев», покинувшей Млечный Путь несколько миллионов лет назад, неожиданно показали, что она родилась не в центре Галактики, а в одном из ее спиральных рукавов. Это считалось невозможным раньше, пишут ученые в Astrophysical Journal.»Это открытие радикально меняет наши представления о том, как возникают подобные звезды. То, что ее траектория движения начинается внутри […]
          NASA Merilis Foto Penampakan Dua Galaksi yang Bertabrakan      Cache   Translate Page, California - NASA mengatakan bahwa sepasang galaksi dilaporkan telah bertabrakan dan menyatu. Temuan ini diabadikan melalui sebuah gambar yang baru dirilis dari Hubble Space Telescope.

Ketika 'pertempuran' hebat tersebut pertama kali ditemukan pada tahun 1784 oleh astronom William Herschel, ia mengira itu hanyalah satu galaksi besar dengan bentuk bulat tidak normal.

Kini, publik bisa tahu bahwa NGC 6052 sebenarnya adalah dua galaksi yang sedang berada pada tahap akhir penggabungan, sangat padat sehingga tepi keduanya --yang berbeda-- telah memudar.

Saat jarak mereka kian dekat, bintang-bintang individual yang berada di dalam masing-masing galaksi akan dikeluarkan dari orbit aslinya dan ditempatkan ke jalur yang baru.

Dua galaksi bertabrakan. Momen ini direkam oleh teleskop angkasa luar Hubble milik NASA. (Adamo et al., ESA/NASA)#source%3Dgooglier%2Ecom#https%3A%2F%2Fgooglier%2Ecom%2Fpage%2F%2F10000

Gambar di atas diambil oleh teleskop Hubble milik NASA dengan menggunakan Wide Field dan Planetary Camera 2 (WFPC2) versi lawas.

Ini mungkin terdengar seperti bencana yang mengerikan, tetapi karena galaksi sebagian besar merupakan ruang kosong, maka tabrakan antar bintang sangat sedikit dan jarang terjadi.

"Sejak bintang-bintang menghasilkan cahaya yang bisa kita lihat, galaksi gabungan itu sekarang tampaknya memiliki bentuk yang sangat kacau," jelas Badan Antariksa Eropa (ESA) sebagaimana dikutip dari Science Alert, Rabu (13/3/2019).

"Akhirnya, galaksi baru ini akan mengendap menjadi bentuk yang stabil, yang mungkin tidak menyerupai salah satu dari dua galaksi aslinya," lanjut ESA.

Galaksi kita sendiri, Bimasakti, pada suatu hari akan mengalami nasib serupa dengan tetangganya, galaksi Andromeda. Tapi untungnya, tubrukan yang terjadi tidak begitu dekat. Para ilmuwan mengklaim, tabrakan keduanya setidaknya berlangsung empat miliar tahun lagi.


Saksikan video pilihan berikut ini:

Ilmuwan Kuak Misteri Tabrakan Galaksi Bimasakti dan Andromeda, Kapan Terjadi?

Ilustrasi Andromeda dan Galaksi Bima Sakti di langit malam (NASA)#source%3Dgooglier%2Ecom#https%3A%2F%2Fgooglier%2Ecom%2Fpage%2F%2F10000

Sementara itu, kiamat bagi galaksi kita, Bimasakti, mungkin 'tertunda'. Setidaknya itu yang disimpulkan dari perhitungan para ilmuwan. 

Sebuah studi baru menunjukkan bahwa tabrakan dahsyat yang diprediksi terjadi antara Bimasakti dan galaksi berbentuk spiral, Andromeda, akan terjadi sekitar 4,5 miliar tahun dari sekarang, menurut pengamatan yang dilakukan oleh pesawat ruang angkasa Eropa, Gaia.

Beberapa penelitian sebelumnya memperkirakan, tabrakan itu akan terjadi lebih cepat, dalam waktu sekitar 3,9 miliar tahun. Namun dugaan ini kemungkinan besar meleset.

"Temuan ini sangat penting untuk pemahaman kita tentang bagaimana galaksi, rupanya, berevolusi dan berinteraksi," kata ilmuwan proyek Gaia, Timo Prusti, yang tidak terlibat dalam penelitian ini, dalam sebuah pernyataan, seperti dikutip dari Live Science, Selasa 12 Februari 2019.

Gaia diluncurkan pada Desember 2013 untuk membantu para ilmuwan membuat peta tiga dimensi (3D) lain dari Bimasakti. Pesawat ruang angkasa ini telah memantau posisi dan pergerakan sejumlah besar bintang dan objek kosmik lainnya secara tepat.

Sementara itu, tim misi tersebut sudah melacak lebih dari 1 miliar bintang sebelum Gaia tak lagi berfungsi untuk selamanya.

Sebagian besar bintang yang Gaia amati berada di Bimasakti, tetapi beberapa di antaranya terletak di galaksi terdekatnya.

Dalam riset baru, para peneliti menemukan sejumlah bintang di galaksi Bimasakti, di Andromeda (juga dikenal sebagai M31) dan di dalam spiral Triangulum (atau M33). Ketiga galaksi yang saling bertetangga ini berada dalam jarak 2,5 juta hingga 3 juta tahun cahaya dari Bimasakti dan dapat berinteraksi satu sama lain.

"Kami perlu mengeksplorasi gerakan galaksi dalam 3D untuk mengungkap bagaimana mereka tumbuh dan berevolusi, serta apa yang menciptakan, memengaruhi fitur dan perilaku mereka," kata penulis utama penelitian, Roeland van der Marel, dari Space Telescope Science Institute di Baltimore.

"Kami dapat melakukannya menggunakan paket data kedua berkualitas tinggi, yang dirilis oleh Gaia," tambah van der Marel, merujuk pada tangkapan yang dirilis pada April 2018.

Pekerjaan ini memungkinkan tim riset untuk menentukan tingkat rotasi M31 dan M33 -- sesuatu yang belum pernah dilakukan sebelumnya, kata para peneliti.

Dengan memanfaatkan temuan yang diperoleh oleh Gaia dan analisis informasi arsip, tim kemudian memetakan gerakan dari M31 dan M33 yang berjalan melalui ruang angkasa di masa lalu dan ke mana keduanya akan pergi selama beberapa miliar tahun ke depan.

Model-model tersebut memberikan penanggalan yang lebih lambat dari perkiraan semula --terkait tabrakan Andromeda dan Bimasakti.

Karena jarak antar bintang begitu besar, kemungkinan tata surya kita akan terganggu oleh adanya "penggabungan" tersebut. Tetapi tabrakan itu pasti akan menyilaukan langit malam bagi makhluk apa pun yang ada di Bumi, yang hidup 4,5 miliar tahun dari sekarang.

"Gaia dirancang untuk memetakan bintang-bintang di dalam Bimasakti ---tetapi studi baru ini menunjukkan bahwa satelit itu bisa melakukan lebih dan dapat memberikan wawasan unik tentang struktur dan dinamika galaksi di luar wilayah kita sendiri," papar Prusti.

"Semakin lama Gaia mengamati pergerakan kecil galaksi-galaksi ini di langit, pengukuran kita akan menjadi lebih tepat," lanjutnya.

Andromeda bukan satu-satunya galaksi yang ditabrak oleh Bimasakti. Awan Magellan Besar (Large Magellanic Cloud) dan Bimasakti disebut akan "menyatu" sekitar 2,5 miliar tahun dari sekarang.

Studi baru tersebut diterbitkan bulan ini di The Astrophysical Journal.

          Antony Gormley and Dr. Priyamvada Natarajan’s lunar virtual reality collaboration comes to The Store X, 180 The Strand      Cache   Translate Page      
An interactive moon walk. British artist Antony Gormley and astrophysicist Dr. Priyamvada Natarajan will exhibit their cosmic virtual reality collaboration Lunatick at The Store X, 180 The Strand this April. Presented by Acute Art and The Store X, Lunatick uses NASA data to map an interstellar journey from Earth to the surface of the moon, […]
          Neural networks predict planet mass      Cache   Translate Page      
(University of Bern) To find out how planets form astrophysicists run complicated and time consuming computer calculations. Members of the NCCR PlanetS at the University of Bern have now developed a totally novel approach to speed up this process dramatically. They use deep learning based on artificial neural networks, a method that is well known in image recognition.
          12 Surreal Modern Vintage Illustration art by julien pacaud      Cache   Translate Page      
Surreal modern vintage illustration art by julien pacaud

12 Artwork of julien pacaud personal portfolio of surreal vintage illustration modern in design but old in characters ( vintage ) , every single illustration inspired by the artist own mind imagination and creativity. Now julien pacaud is living in Le Mans, France ( french-based artist and illustrator ) but before this work he was, by turns : an astrophysician, an international snooker player, a hypnotist and an esperanto teacher. He hopes he can someday have enough free time to devote himself to his real passion : time travel.

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud

Surreal modern vintage illustration art by julien pacaud
Images © julien pacaud
also find his illustration portfolio on flicker ~ facebook ~ twitter

          Quasar jets confuse orbital telescope      Cache   Translate Page      
(Moscow Institute of Physics and Technology) Astrophysicists from the Moscow Institute of Physics and Technology, the Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS), and NASA have found an error in the coordinates of active galactic nuclei measured by the Gaia space telescope, and helped correct it.
          What Makes A Star Starry? Is It Me?      Cache   Translate Page Notice what Tyler Nordgren does in these posters. He's an artist, an astronomer (from Cornell, Carl Sagan's department); he's worked for NASA. He's an expert in dark matter, and a full professor at the University of Redlands. He knows much, much more than I do about astrophysics and stars, and yet, look at these night skies — a series he created to promote America's national parks at night ... The stars aren't right. They're supposed to be pointy, with little beams coming off them. That's how we usually see stars. But not here ... Or here ... Nordgren makes his stars round. Like planets. His recent poster series , "Half the Park is After Dark," was an enormous popular and artistic success. The posters, with their 1930s graphic style, are gorgeous. But, why the roundness? Or maybe I should upend the question and ask, How come we always draw our stars pointy? Is it because we actually see them that way? When I look up at night, stars do look
          Descubren las dos estrellas bebé más cercanas que jamás se hayan visto      Cache   Translate Page      

Un equipo internacional de investigadores ha logrado medir con precisión la distancia entre dos estrellas jóvenes masivas en el sistema PDS 27. Descubrieron que los objetos están separados por 4,5 billones de kilómetros, lo que los convierte en la pareja de estrellas bebé más cercano que se haya observado. El descubrimiento, publicado en Astronomy & Astrophysics: […]

El artículo Descubren las dos estrellas bebé más cercanas que jamás se hayan visto fue publicado en ¡No sabes nada!.

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