#WASP-17b

[hosizorayoukai]

【JWST 系外惑星】謎めいた“水晶の雲”結晶形成をジェイムズ・ウェッブ宇宙望遠鏡が観測！（太陽系外惑星 WASP-17 b）

WASP-17bとして知られる灼熱の世界では、絶対に心を揺さぶる何かが起こっている。シリカと呼ばれる物質でできた、超クールできらびやかな雪の結晶を発見したようなものだ。ちなみにシリカは、私たちの古き良き地球ではごく一般的な物質で、親しみのある物質である。

しかし、ここからが超驚くべきことだ。この輝くシリカの粒は信じられないほど小さくナノサイズで極小なのだ！それはまるで、遠く離れた巨大なガス惑星の燃え盛る大気の中を、鋭く輝くガラスの破片が飛び回っているような光景だ。

さて、そこでYouTubeのスーパースター、ジェイムズ・ウェッブ宇宙望遠鏡の登場だ。この壮大な望遠鏡は、とんでもない距離からこのちっぽけな斑点を発見することができる。そして本当の性能を発揮したのは、遠い惑星の大気や気象システムを教えてくれることだ。

ウェッブ宇宙望遠鏡は基本的に宇宙のシャーロック・ホームズであり、惑星の謎を一粒ずつ解き明かしているのだ！

▼見逃し配信▼ 🎦こちらは「岩石の大嵐」がうずまく木星よりはるかに大きな惑星「VHS 1256 b」 https://youtu.be/GUDCghb8GC8

📝目次📝 ------------------------------------------------- 0:00 驚くべき発見とは 1:30 １３００年前の奈良天平文化の光 2:33 エアロゾル候補５つの惑星 4:19 星系WASP-１７とは 6:15 ウェッブ宇宙望遠鏡の最新観測 7:53 予想だにしない観測結果 8:45 水晶の結晶はどこから来た？ 9:45 大気組成の解明に迫る 10:50 今回の名言

どうぞ、最後までお楽しみください。

⭐️チャンネル登録はこちらから⭐️ https://www.youtube.com/@soranohoshi このチャンネルでは、宇宙や星空の情報や知識を親しみやすく、 ゲームやアニメ感覚でシェアしていくチャンネルです。 今後の動向や、宇宙や星々に興味がわきましたら、 是非！チャンネル登録もしていただけると嬉しいです。

アンケートや感想、いいねボタンも大変励みになります。 お気軽にご参加ください。

日々の星空ライフを充実したものに。 今後、人類のさらなる宇宙への挑戦を見守っていきましょう。

📣割愛・こぼれ話📣 ------------------------------------------------- ▼創建1300年を迎えた興福寺 - 法相宗大本山　興福寺 https://www.kohfukuji.com/about/history_1300th/ 今回の惑星WASP-17bの光は、この時代に放たれた光を見ています。

▼太陽系外衛星の可能性1? この惑星には、エクソ・イオ（イオに似た太陽系外衛星の種類） である��WASP-17b I」が存在する可能性が指摘されています。

▼発見と命名の経緯 空にはWASP-17と呼ばれる遠い場所がある。イギリスの科学者たちが 特殊な望遠鏡を使ってそれを観察したところ、星の周りを回る本当に 大きなガス状の惑星が見えた。

彼らは、地球よりもはるかに大きいこの惑星が、 ときどき恒星の前で動き、恒星を少しの間暗く見せていることに気づきました。

観測には南アフリカ天文台の望遠鏡アレイが用いられ、 スーパーWASPサーベイが発見した17番目の惑星にちなんで名付けられました。

2019年の「IAU100 Name ExoWorldsプロジェクト」では、 さまざまな国や地域がこれらの惑星や星に特別な名前をつけることになりました。 WASP-17では、コスタリカ共和国の人々に名前を選んでもらいました。

中米のコスタリカの人々は、星に「ディウォ（Dìwö）」、 大きな惑星に「ディツォ（Ditsô）」という名前を選んだ。 これらの名前は、ブリブリ族と呼ばれるコスタリカの先住民族の言語に由来します。

Dìwö（ディウォ）は、とても大きくて決して消えない太陽を意味し、 Ditsô（ディツォ）は、ブリブリ族が大昔にシボ神（Sibô）が 自分たちに与えてくれた名前だと信じている。

だから、星と惑星は、より面白くするために、 このような特別な名前をつけたのです。

🎬店長の気になるグッズ・映画🎬 以下、一部リンクにはアフェリエイト【PR】が含まれます。 ------------------------------------------------- ▼【40mm玉】ブラジル産最高ランク 完全透明本水晶玉 完全天然石 約88g 木製台座付　※公式鑑別書の別手配も可能 【PR】https://a.r10.to/hUn6W0

▼水晶 ネックレス 六芒星・クリスタル クォーツ 厄除け お守り 魔除け 天然石 ペンダント 【PR】https://a.r10.to/huujEC

▼【天然透明 水晶(六角柱)】90グラム-100グラム 透明感抜群 手ごろな小さめサイズ ��人気浄化アイテム【ブラジル産】 【PR】https://a.r10.to/hgdnJH

▼【食品用】シリカ ケイ素サプリ 水晶珪素 50ml 珪素濃縮溶液でミネラル補給 お料理にも 【PR】https://amzn.to/408xQGP

▼【10日間お試しセット ケイ素＆ケイ素関連商品 4点セット 濃縮溶液 50ml シリカ水が作れる 日本製 シリカサプリ 水溶性ケイ素 【PR】https://a.r10.to/hN9ZdI

▼【洗顔石鹸】ケイ素 シリカ 宝石 水晶 【PR】https://a.r10.to/h559J3

📘資料・出典📘 ------------------------------------------------- ・フリー百科事典『ウィキペディア（Wikipedia）』 ・天文学辞典：天体に関する用語を3,000語以上収録・解説。 https://astro-dic.jp/ 【公式】公衆のためのWebbホーム https://webbtelescope.org/ 【公式】ハッブル宇宙望遠鏡ホーム https://hubblesite.org/home 【公式】太陽系外惑星データベース http://www.exoplanetkyoto.org/

📀使用ソフト📀 ------------------------------------------------- ▼Space Engine –宇宙シミュレーターソフト http://spaceengine.org/ ロシアの天文学者でプログラマによる独自の3D宇宙空間 シミュレーションソフトウェアおよびゲームエンジン。 ※当動画は、Proライセンスを取得して配信しています。

▼ステラナビゲータ12/AstroArts 最新版・純国産の天文シミュレーションソフトウェア。 【PR】https://a.r10.to/hU8Ip9

▼Universe Sandbox 2 宇宙物理シミュレーションソフト http://universesandbox.com/

▼CeVIO AI さとうささら すずき つづみ　弦巻マキ(日本語＆英語） 深層学習等のAI技術を使い、声質・癖・喋り方をリアルに再現した 新世代の音声創作ソフトウェア最新版！ ・さとうささら（ベクターPCショップ） https://pcshop.vector.co.jp/service/catalogue/cevioai/ ・弦巻マキ／AHS(AH-Software) https://www.ah-soft.com/cevio/maki/index.html ・すずきつづみ（ベクターPCショップ） https://pcshop.vector.co.jp/service/catalogue/cevioai_tsudumi/ この動画はCeVIOプロジェクトの「さとうささら」「弦巻マキ」「すずきつづみ」を使用しています。

🎬おすすめ動画リスト🎬 ------------------------------------------------- ▼【太陽系惑星 JWST特集】ジェイムズ・ウェッブ宇宙望遠鏡が観測した太陽系惑星特集 https://youtube.com/playlist?list=PLVD9xZXaEKsUJRyPWLLqIVtFQkJ_DZkOR

🔽ブログやSNS🔽 ------------------------------------------------- ▼Twitterアカウント https://twitter.com/kikuchon37

[mindblowingscience]

Thousand-mile-per-hour winds are blowing a hail of tiny quartz crystals through the silicate-enhanced, scorching hot atmosphere of a distant gas giant planet called WASP-17b, the James Webb Space Telescope (JWST) has found. "We knew from Hubble [Space Telescope] observations that there must be aerosols — tiny particles making up clouds or haze — in WASP-17b's atmosphere, but we didn’t expect them to be made of quartz," Daniel Grant of the University of Bristol in the UK and leader of a new study on the discovery, said in a statement. WASP-17b is an incredible world. Orbiting every 3.7 days at a distance of just 7.8 million kilometers (4.9 million miles) from its star, which sits 1,300 light years away from Earth, WASP-17b is so close to its stellar host that its dayside temperature rises to a staggering 1,500 degrees Celsius (approximately 2,700 degrees Fahrenheit). Because the atmosphere is so hot on this exoplanet, the world has actually expanded to about 285,000 kilometers (176,892 miles) across, which is just shy of twice the diameter of Jupiter. And that's despite WASP-17b having only about half of Jupiter’s overall mass. WASP-17b is one of the "puffiest" planets known — and its bloated atmosphere makes it a great target for the James Webb Space Telescope.

Continue Reading.

[hinge]

Hinge presents an anthology of love stories almost never told. Read more on https://no-ordinary-love.co

[artistakai]

This is Razor!

She is an off color peridot made on Wasp 17B, the latest peridot homeworld (Squaridot and Bubble are also from there). She is only 120cm tall and defective - her defects aren't insectoid though because she's a hybrid. She's 90% a peridot and 10% a cat's eye quartz (quartzes are felines in my AU), hence the feline traits! Her gem shines like a cat's eye quartz, too. She was overcooked and not found by Homeworld - thankfully, as she would've been shattered. Peri and Nyll bumped into her when looking through Wasp 17B for resources and ended up 'taming' her. Razor eventually lives on Earth with the Crystal Gems and Bubble. They're really good friends!

Kitty!

This is more atmospheric, hope u don't mind🥲

[dangerdust2]

Quartz, also known as silica, is everywhere. This mineral is in the screen of the laptop or phone you’re reading this article on. It’s used to make computer chips, which are in everything from medical equipment to washing machines. It can be melted to produce glass.

The new study provides an important insight into the sometimes extreme and unfamiliar conditions present on worlds around other stars. We think of quartz as a hard substance, but the heat and pressure on WASP-17b can transform this mineral into a gas. The crystals then form out of this gas in the upper atmosphere.

[pepikhipik]

Webbův dalekohled objevil v atmosféře horkého obra nanokrystaly křemene

Vědci si od Webbova dalekohledu slibovali, že se mimo jiné stane cenným pomocníkem při průzkumu exoplanet, především pokud jde o jejich atmosféru. A jak se ukazuje, zhruba před rokem ve vesmíru zprovozněný Webbův dalekohled v tomto ohledu nezklamal. Dokládají to jeho nedávná pozorování exoplanety WASP-17b.

[astroimages]

O Telescópio Espacial James Webb estudou o exoplaneta WASP-17b e descobriu na sua atmosfera nuvens formadas por cristais de quartzo, algo muito interessante já que esse exoplaneta é um Júpiter Quente, entenda porque no vídeo!!!

VÍDEO NOVO NO CANAL!!!

JAMES WEBB DESCOBRE NUVENS DE QUARTZO NA ATMOSFERA DE EXOPLANETA - https://youtu.be/4_Fzg3GLlaA

[hinge]

Hinge presents an anthology of love stories almost never told. Read more on https://no-ordinary-love.co

[chaosverse-mainblog]

Please do I have almost zero knowledge of space what I know ends at the sun is a star -T

Ok ok ok so,

There are 5,060 discovered exoplanets. Which is cool! There are over 5,000 worlds out there!

An atmosphere of the exoplanet WASP-96 b was recently revealed to have water

There’s a planet that is hotter than some stars called Kepler 70 b or KOI-55 at 7,662 K or 7,389 degrees Celsius/ 13,332 degrees Fahrenheit (it’s also being said that it likely doesn’t exist)

Janssen or 55 Cancri e has carbon on it leaving many to think it was a diamond planet (there could be graphite as well but it’s likely molten since Janssen is close to it’s parent star)

PSR B1620-26 b is the oldest planet in our galaxy at 12.7 billion years old and is referred to as Methuselah or the Genesis Planet

PSR B1257+12 is named Lich, it’s planets are known as Draugr, Poltergeist, and Phobetor (in that order)

TrES-2b reflects 1% of light from it’s parent star

WASP-12b is being eaten by it’s star

and

WASP-17b is a type of planet known as a puffy planet and is is nearly twice the size of Jupiter

[urbanspellcraft]

(for the cute asks) 5, 29, and 31!

5. Favorite thing cats do?Like... just being cats. They are just lovable and weird little death creatures that have the biggest hearts (sometimes).29. Favorite flower?Currently its sunflowers, although that changes quite a bit honestly. I am having a thing for sunflowers right now because we have a bunch outside of our apartment, so I direct people to "where the sunflowers grow" and I love it.31 Which planet do you like the most?WASP-17B ... its currently the only planet that I am aware of that has been discovered to have a retrograde orbit. How fucking metal is that? In our solar system, it is probably Neptune. <3

[agentduckorico]

6 for ven?

Where are they from? What’s their home planet like?

Fuck that’s a good question. Hm. 

Ven is from what humans know as WASP-17b, but what she knows as Iso. It’s what’s known as a “puffy planet,” a gas giant with a large radius and a very low density. It’s in the earth constellation of Scorpius, and it has a retrograde orbit. It’s got water in its atmosphere.

Iso is a very calm planet. The atmosphere is full of shifting pastel colors: pinks, purples, and blues. It looks a lot like this. Being a gas giant means that there’s no land, but the people have built sky cities a lot like Cloud City from Star Wars.

Ask me about my TWRPsonas!

[thebuffbengali]

ᴛᴇɴ sᴛʀᴀɴɢᴇ ᴇxᴏᴘʟᴀɴᴇᴛs

The oddity of multitudinous exoplanets have left astronomers baffled ever since they were discovered. In the unquenchable thirst for discovering extraterrestrial life, many of these recently discovered exoplanets, unique in their own esses, are being studied and savvied. Some have been found to be residing in their parent stars' "habitable" (the reason for it being betwixt inverted commas is lucid and very obvious) zones, some in close proximity to their stars, some orbiting their stars, some hot, some cold, some so bizarre, having characteristics and properties so flummoxing that the probabilities and very chances of their existences are questioned and doubted.

The Hubble telescope is always looking for exoplanets to be newly discovered in the vastness of space. The exemplification of it can be nebulously analogous to the odyssey of a deep-sea diver in a diving bell set out to find diminutive, ephemeral and rare mineral crystals in the Earth's oceans. Now, of course, we know that space is immeasurably colossal to be equated or analogized with the oceans but this is just to make someone picture it in his mind how vast our Universe is and how Herculean and labyrinthine it is to discover exoplanets!

Here are ten of some of the weirdest exoplanets ever discovered.

1). The exoplanet named TrES-2b, located approximately 750 l.yrs from our solar system, is officially the darkest planet ever discovered. This abstruse and menacing planet reflects less than 1% of all the light that hits it, making it significantly darker than the majority of known exoplanets. The ominously dark surface can be partially explained by the aerospheric light-absorbent gases that make up the bulk of the planet. Although astronomers aren't fully enlightened about why it is so abberantly dark, there is another eerily confounding fact about this gnomic planet laid bare and unfolded among the myriads of mysteries our universe bears. This sinister-looking sphere of gas also glows a molten red colour as if it's an incandescent ball of coal alight, peregrinating through the fabric of space. This is because the surface temperature of this planet is an inexorably pitiless 1,100°C!

2). This planet is anything but dark, the exact antithesis of the latter - a luminescently sparkling realm just like an astronomically enormous ball of diamond because it is made of diamond! This planet, named 55 Cancri E, is about twice the size of Earth and a third of it is made of solid diamond. It is very carbon-heavy and it is so dense that all the carbon is in the form of diamond. But don't get too overwhelmed and exhilarated because the shimmering exoplanet is a spectacular 40 light years away from us! With our still-developing advancements in science and infinitesimally insubstantial, microcosmic efflorescence in space exploration delimiting us, traversing such a mind-crushing distance is ludicrously beyond us and this makes Cancri stark inaccessible contemporarily. But, even it we were able to reach this diamond elysium and reach home with an influx of even a minute fraction of the diamond crystals there, the ubiquitousness and overabundance of diamonds will be so immanent globally that this would lead to the value of diamonds plummeting exponentially due to the lack of rarity and proliferation in its supply to surfeit! An avalanche of diamonds procurable like nitrogen would not be that much of an euphoria then! So this sublime realm is best admired from afar.

3). Now this exoplanet seems to defy what you have come across in your chemistry textbooks, looks bewilderingly inscrutable when observed and confusticatingly paradoxical, a pulchritudinous world commingling and coalescing two polarities in synchronous accord. This planet, named Gliese 436b, is a ginormous ball of ice on fire - a planet no one would be convinced about when heard of for the first time and would probably laugh it off as some fictional, chimerical realm from Star Wars or Thor or a jejune joke until they are nonplussed and taken aback by reality! The icy surface of the planet is constantly burning at an eldritch 439°C!! So how can this ever be possible that solid ice is perfectly existing unmelted with fire at such a temperature way above its melting point? Astronomers have an explanation for this thankfully. Well, the planet's gravitational attraction is so extremely leviathan that it pulls the melted ice water towards its core, compressing it into a solid form and precluding it from ever evaporating no matter how much it burns!

4). Next time you complain about the weather here on earth, just stop for a moment and be thankful to God that you don't live on the planet HD 189773b, where it unremittingly rains glass sideways! The atmosphere of this exoplanet is profusely full of silicon-infused or silicon-based compounds and substances, which give it its elegantly majestic, worth-panegyrising blue colour. Because of the planet's high surface temperature, these silicon-based particles condense to form solid glass which descends askew as precipitation relentlessly, manoeuvred and dynamicized by tremendously volant winds with staggering speeds of around 4000mph! Seriously! Take a moment and imagine being stranded on this planet, anticipating the worst - an excruciating death as the unforgiving and baleful, aculeate and sword-like glass precipitation perforates every flesh of your zephyr-like body, ripping and tearing it apart into shreds and smithereens! It maybe way too blood-curdling or spine-chilling to imagine but the way I described it is quite close to how it's gonna end! Horror and agony shall be finality.

5). If you think HD 189773b was hellish and unsparing, you haven't met this exoplanet named WASP-12b. This poor and unfortunate planet is being gradually ingurgitated and devoured by its parent star. It's caught up in an orbit so close to the star's punishing vortex that it has been heated up to extremely high temperatures and its mass is being engulfed up by the fireball at a very swift rate, feeding the star up into a gargantuan, blazing fusion reactor venturing in space. WASP-12b is roughly the size of Jupiter. However, it appears to be larger because the crushing temperatures of its parent star have caused it to balloon up and expand on the verge of an apocalyptic implosion! This defenceless planet, awaiting its inevitable doom on sealed fate and the epilogue of its tragic biography, loses an incredible 6 billion metric tonnes of mass every second! In fact, it's being torn apart so rapidly that it is no longer a spherical shape but an egg-like oblong shape resembling the elliptical orbits of the planets of our solar system when viewed from above.

6). This one is a very fascinating exoplanet named Gliese 581c. This planet is very special because it's being voted by the scientific community as one of the top three exoplanets likely to support alien life! And what, in the universe, titillates astronomers more than this? Although Gliese is surmised to harbour extraterrestrial life, there are many features and facts about this planet that makes it very different from our blue home. This planet orbits a red dwarf star 🔴 while the Earth orbits a main sequence star ☀️. On Gliese, if you gazed up at the horizon waiting for the star-rise, you'd get a magnificently breathtaking and literally "out-of-the-world" stupefying sight of a lustrous and flaming red glow in the sky as the red dwarf star comes into your field of view gradually and enthrals you in its alluring emergence. The sky would continue to look a deep crimson red colour throughout the day until star-set. The planet is also tidally locked i.e. it doesn't rotate on its axis, just like the moon's relationship with our Earth. One side of the planet is always facing away from its star and the other always facing towards it. The side that always faces the red dwarf is so blisteringly hot that if you were to stand there, it would melt you alive into soup and vaporize you completely! However, the opposite side of the planet, facing away from the star, is so astonishingly cold that you'd instantly freeze to death! Limiting yourself to assume that some alien life forms will be similar to those here on Earth, you must be wondering how could this violently harsh planet support life. Well, there's a narrow strip of land halfway between the hot side and the cooler side that has just the optimum temperature to support alien life. That central area has been assumed to be the exoplanet's habitable zone. Care has to be taken to make sure the living organisms do not make their way to either of the two extremes to circumvent the torment of getting roasted or frozen to cessation! In 2008, a message was sent by scientists on Earth directly at Gliese 581c and it is expected to reach the planet in 2029.

7). This planet is located in the Scorpio's constellation and known as WASP-17b. One feature that makes this planet so striking and stellar is its sheer size. It is 1.9 times the size of Jupiter, the king of the planets in our solar system. This planet is so prodigious that it is not supposed yo exist theoretically. It kind of seems to break the "laws" of how large a planet can be. For its size, it also has an extremely low density. Because of this, it fits into a very unique class of planets called "puffy planets"! These planets are very large and their densities ate very low in juxtaposition. But it's not the only thing about WASP-17b that makes it so idiosyncratic. It also has a retrograde orbit i.e. it rotates at an opposite direction to its host star.

8 ). You may remember that Luke Skywalker's home planet of Tatooine in Star Wars had two suns. But, as is often the case, reality can be much more awe-inspiring and stupendous than science fiction or imaginative movies. A 149 light years away from us is a planet which has not one, not two, but three stars. This three-star planet, which goes by its catalogue name of HD 188753Ab, ensconces itself in a triple-star system HD 188753. If you had the capability of visiting this planet and be jubilant in surviving and coping with its conditions, you'd experience triple shadows and a sky that gives the spellbinding and captivating view of three different stars of different colours. That'd be one hell of an enrapturing varicoloured show on the horizon gladdening your photoreceptors! You'd also experience constant eclipses as its three parent stars crossed each other's paths. And of course, you'd see very unusual but one of the most intriguing sunrises and sunsets in the universe.

9). Now imagine yourself in the middle of the Pacific Ocean and the horizon seems to be the indistinguishable merging of the blue sky and the ocean. Everywhere you look, there's only water. No sign of land and you're just in between the ineludible big blue seemingly infinite in its hold. That's what it'll exactly be like if you visited GJ 1214b, about 47 light years away from our solar system. It is an exoplanet made entirely of water, the primary liquid astronomers look for in a planet before assuming it to harbour life! They have nicknamed this planet "the waterworld". The entire surface of this distant realm is one vast, continuous ocean and it remains exactly the same for miles underneath the surface until you reach the planet's core which is encrusted with a thick layer of solid ice. But this ice isn't any ordinary ice that you'd expect to find in your refrigerator! This is because this ice isn't frozen due to cold temperatures. The water surrounding the core is under such an immense amount of pressure from the water above on the surface that the water incarcerating the core is totally compressed to solid ice! This outlandish, rare and unique form of ice is known to scientists as "ICE VII".

10). Last but not the least, 470 l.ys away from us is a planet discovered by the Kepler Space Observatory. It is known as Kepler 438b. This is another peculiar planet that has not got its eccentricity from any distinct features but because it is the most Earth-like planet we've ever found! Having the highest ESI (Earth Similarity Index), this planet has an outstanding ESI value of 0.88, making is ultra rare and very special for that case! Discovered in January 2015, this planet has all the right prerequisites for having the possibility of harbouring alien life, according to the scientists. Most importantly, it is a rocky world just like Earth and its propinquity to its host star places it in the Goldilocks Zone (habitable zone). Water is essential to life. Where there is this precious liquid, there is probably life. But in order to have complex life (assuming that we consider other alien life forms to be somewhat similar to those on Earth), there is a necessity of liquid water which, most of the time, can only be present in the Goldilocks zone. So, this planet is highly likely to have liquid water and therefore life, which makes it one of the weirdest and most fascinating exoplanets we've ever discovered!

These were only ten of the strangest exoplanets we've discovered till date. God knows what's waiting for us in the future when we come across a few, among the zillions, which will be far stranger and mind-boggling for us to expect! This is space. It will never fail to leave you nonplussed and humbled, make you ponder on how many other undiscovered secrets are hiding in its grandeur, waiting for us to meet!

⚂PHOTO - Artist's depiction of two neighbouring exoplanets.

∅Written by: Shamsud Doha. /thebuffbengali [Plosker]

[hinge]

Hinge presents an anthology of love stories almost never told. Read more on https://no-ordinary-love.co

[kreuzaderny]

Hubble Traces Subtle Signals of Water on Hazy Worlds

Using the powerful­ eye of NASA's Hubble Space Telescope, two teams of scientists have found faint signatures of water in the atmospheres of five distant planets.

The presence of atmospheric water was reported previously on a few exoplanets orbiting stars beyond our solar system, but this is the first study to conclusively measure and compare the profiles and intensities of these signatures on multiple worlds.

The five planets -- WASP-17b, HD209458b, WASP-12b, WASP-19b and XO-1b -- orbit nearby stars. The strengths of their water signatures varied. WASP-17b, a planet with an especially puffed-up atmosphere, and HD209458b had the strongest signals. The signatures for the other three planets, WASP-12b, WASP-19b and XO-1b, also are consistent with water.

[startswithabang]

What's The Largest Planet In The Universe?

“Above a certain mass, the atoms inside large planets will begin to compress so severely that adding more mass will actually shrink your planet. This happens in our Solar System, explaining why Jupiter is three times Saturn's mass, but only 20% physically larger. But many solar systems have planets made out of much lighter elements, without large, rocky cores inside.”

You might think that Jupiter is the largest planet in the Solar System because it’s the most massive, but that’s not quite right. If you kept adding mass to Saturn, it would get larger in size, but if you kept adding mass to Jupiter, it would shrink! For a given set of elements that your planet is made out of, there’s a maximum size it can reach, that’s somewhere in between the mass of Saturn and Jupiter in general. Our Solar System is on the dense side of things, meaning that we’ve discovered a large number of exoplanets out there that are approximately twice the physical size of Jupiter without becoming brown dwarfs or hydrogen-fusing stars. For worlds like WASP-17b, where we’ve measured both the radius and mass, we find that they’re only about half the mass of Jupiter, despite being double the size.

Come get the full scientific story, and some very informative and illustrative images with no more than 200 words, on today’s Mostly Mute Monday!

[cornylabs]

Planets you won't believe exist

Planets are the most interesting thing to study about in the whole universe so let's check some abnormal planets; Kepler-16b is a planet which orbit two suns yes two sun it is like star war. It is 200 light years away from us but it does not contain life. A planet just like earth is there which support life which is called as Gliese 581 c. But it is really like earth? No, as it is orbiting a star which scientist call it as red dwarf and you know what happen when planet orbits around red dwarf one side of the planet remain completely toward the star burning and another side will freeze to death. WASP 17B it is a planet which is the biggest in its size and this planet orbit in the opposite direction of its parent star. Hd 188753 is a planet which has three-star yesss 3 stars we don't know how it formed this planet is about 151 light years away.

[austonsmith-blog-blog]

Most important discovery of humankind on its way

1- Extrasolar planets detection history - Since the first published, confirmed discovery made in 1988 (Gamma Cephei Aplanet) by the Canadian astronomers Bruce Campbell, G. A. H. Walker, and S. Yang, there was an increasing numbers of discoveries. In 2011, the exoplanet catalog, regularly updated, contained 548 confirmed planets. Today, it is no less than 3557 confirmed planets, 2668 planetary systems and 601 multiple planet systems that were discovered. Almost each week, a new planet is discovered and/or confirmed... It's even became mundane:

2- Earth-like planets At the same time, the number of exoplanets that have an ESI (Earth Similarity Index) similar to that of the Earth increased as well, especially with the discoveries of Kepler-438b (discovered in 2015, ESI 0.88, thought it is apparently not habitable) and of Kepler-62e (discovered in 2013, ESI 0.83).

We also have to think about the fact that Mars has a 0.797 ESI, which is less than the two best Kepler candidates named above, and yet we think about a possible past (and even current) life on Mars. Also, in order to really put things in perspective, a scientist team estimated (2013, november) that 22±8% of Sun-like stars in the Milky Way galaxy may have an Earth-sized planet in the habitable zone. Assuming 200 billion stars in the Milky Way, that would be 11 billion potentially habitable Earths, rising to 40 billion if red dwarfs are included. (!!) And only in our galaxy... 3- Exoplanets in the habitable zone of their star Since the launch of Kepler in 2009, the scientists have doubled the number of known exoplanets smaller than the size of Neptune. A hundred are smaller than 1.2 times the size of the Earth and even 21 are twice this same size, in the habitable zone of their star. Nine of these have been validated (2016, May) and are plotted as orange disks in the map below. The previous known planets are marked as blue disks.

“ These planets are plotted relative to the temperature of their star and with respect to the amount of energy received from their star in their orbit in Earth units. The sizes of the exoplanets indicate the sizes relative to one another. The images of Earth, Venus and Mars are placed on this diagram for reference. The light and dark green shaded regions indicate the conservative and optimistic habitable zone. Credits: NASA Ames/N. Batalha and W. Stenzel”

source

Looking at this map do incite to think that earth-like planets are very common, not exceptional at all, and that the number of their discovery will considerably increase in the near future. The two updates wiki lists (exoplanets in the "conservative" and in the "optimistic" habitable zone) can be seen here 4- Exoplanet atmosphere As of February 2014, more than fifty transiting and five directly imaged exoplanet atmospheres have been observed, resulting in detection of molecular spectral features; observation of day–night temperature gradients; and constraints on vertical atmospheric structure. Also, an atmosphere has been detected on the non-transiting hot Jupiter Tau Boötis b and water was detected (2013) in 5 exoplanets (HD 209458 b, XO-1b, WASP-12b, WASP-17b, and WASP-19b). One year later, NASA reported that HAT-P-11b is the first Neptune-sized exoplanet with a cloud-free atmosphere and water vapor as well. Will 2017 be the year of the detection of an atmosphere, possibly with water vapor, on an Earth-sized exoplanet? I personally find the idea very plausible and a logical continuity to the discoveries. 5- Upcoming missions and projects that will increase the chances In the last days of this 2016 years, interesting Internet papers are published that expose these projects. Their names are indicative of the enthusiasm of the exoplanets hunters: 2017 Will Bring Us More Earth-Like Alien Worlds Than We Ever Dreamed 2017 should be a big year for discovering new potentially habitable worlds They are saying more or less the same thing, in substance that 2017 will be a pivotal year for the exoplanet hunt with the following projects:

Transiting Exoplanet Survey Satellite (TESS) NASA will be launching TESS in 2017. Within its two-year mission, they plan to use the satellite to observe at least 200,000 stars and expect to discover thousands more exoplanets. MeerKAT and SKA The 64-dish MeerKAT Radio Telescope in South Africa is so powerful that in a test run using only 16 of its 64 dishes, it was able to detect 1,300 galaxies where only 70 were previously known to exist. All 64 of those dishes are expected to be in place by the start of 2017, so we can expect big discoveries from this telescope. As if MeerKAT isn’t impressive enough, it’s actually just a small part of an even bigger project, the Square Kilometer Array (SKA). FAST The 500-meter (547-yard) wide Aperture Spherical Telescope (FAST), nicknamed Tianyan (Eye of Heaven), holds the world record not only in size but in sensitivity: it’s about twice as sensitive and between five and 10 times as fast in surveying as the previous record holder. This device went live in September this year, so it’ll likely contribute to many discoveries in 2017. James Webb Space Telescope (JWST) Just in case the potential for super-Earth discoveries in 2017 isn’t enough, NASA’s Hubble replacement, the James Webb Space Telescope, will join the hunt for exoplanets orbiting nearby stars in 2018. This telescope took 20 years and $8.8 billion to build, and it was designed with a view 100 times the size of Hubble’s. Supposedly, it is so powerful that it can detect a bumblebee on the Moon, so hopes are high it’ll be able to find more super-Earths.

[hinge]

Hinge presents an anthology of love stories almost never told. Read more on https://no-ordinary-love.co

[thenewenlightenmentage]

Signs of Water Found on 5 Alien Planets by Hubble Telescope

NASA's Hubble Space Telescope has detected water in the atmospheres of five planets beyond our solar system, two recent studies reveal.

The five exoplanets with hints of water are all scorching-hot, Jupiter-size worlds that are unlikely to host life as we know it. But finding water in their atmospheres still marks a step forward in the search for distant planets that may be capable of supporting alien life, researchers said.

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[mrleontas]

Это первый случай, когда SiO2 был обнаружен на экзопланете. WASP-17 b, объём которой более чем в 7 раз превышает объём Юпитера при вдвое меньшей массе, является одной из крупнейших и наименее плотных экзопланет. Её температура достигает 1500°C, а атмосферное давление составляет лишь одну тысячную от давления на поверхности Земли, что позволяет кристаллам твердого кварца образовываться непосредственно из газа. Это первая обнаруженная экзопланета, которая движется по ретроградной орбите, то есть обращается вокруг звезды в направлении противоположном вращению самой звезды. Диаметр планеты вдвое выше юпитерианского. Средняя плотность составляет 0,1 г/см³ (порядка 10 % плотности воды), что в 13 раз меньше плотности Юпитера и более чем в 6 раз меньше плотности Сатурна, наименее плотной планеты Солнечной системы. В 2013 году астрономам при помощи космического телескопа «Хаблл» удалось найти в атмосфере планеты признаки водяного пара.

Космические новости: Джеймс Уэбб нашёл кристаллы кварца в облаках экзопланеты WASP-17b (spacebestnews.blogspot.com)