iiinova — where your digital self keeps evolving

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Inverse 5040 @inverse5040.bsky.social · 14h

if enrico fermi was slammed in the groin with a bowling ball he could say "ouch oof my fermions" and he wouldn't be wrong

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ToughSF @toughsf.bsky.social · 01/10/2026

A duel mission to Uranus and Neptune, launched by a single SLS: ieeexplore.ieee.org/document/105... Each probe is ~6.5 tons, plus an Orion 50XL deep space maneuver stage , on a ΔVEGA gravity assist trajectory, arriving after 16 and 18 years respectively.

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Chara @astrochara.bsky.social · 19h

Some four million years ago, two superstars flew past our neighbourhood: Adhara and Mirzam. Both extremely bright and massive stars, to this day they remain one of the brightest stars in each other’s sky. #ACelestialJournal

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Chara @astrochara.bsky.social · 30/09/2026

As a cold sub-Neptune planet, TOI-6981 b probably has a hydrogen-rich atmosphere which might make its atmosphere resemble our giant planets', so I based its appearance on Jupiter, Saturn, and Neptune. bsky.app/profile/astr...

This artwork depicts a possible appearance for TOI-6981 b, which is depicted as a brown/cream-coloured odd combination of Jupiter, Saturn, and Neptune, further tinted orangish by the light of its M4V host star. Behind it is the constellation of Orion as seen from TOI-6981, its stars displaced from how they look from Earth.

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Chara @astrochara.bsky.social · 30/09/2026

Today's arXiv day: Meet TOI-6981 b, an *actually* cold (zero-albedo equilibrium temp = 186 K!!) transiting sub-Neptune only 25 pc away, amenable to transmission spectroscopy characterization!!! arxiv.org/abs/2609.37597

arxiv.org

TOI-6981 b: a transiting sub-Neptune at the water ice line

We present TOI-6981 b, a cold (Teq= 170.0 +/-4.5 K, assuming an Earth-like albedo) sub-Neptune (Rb=2.40+/-0.10 R_oplus) on a 60.8 day orbit around around its M4-type host star (R*=0.304 +/- 0.012 R_od...

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ESA Space Science @science.esa.int · 30/09/2026

Inspector Smile is ready for science! 🫡 This is Smile’s first ultraviolet view showing an auroral substorm. With the ultraviolet camera now operational, Smile becomes the first spacecraft since 2008 to capture the full ring of northern lights around the north pole in ultraviolet light. 🔭 🧪 ☀️

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Chara @astrochara.bsky.social · 29/09/2026

Today's arXiv day went almost 6 hours past UTC midnight. I predicted it's going to be a monster. I was right. - Possible mechanism for variable He escape from LHS 1140 b - 2-ary eclipse+phase curve for TOI-2431 b - NEID Earth Twin Survey part 6 - TOI-125 trans. spec - TOI-210 b discovery

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Massimo (mirror) @rainmaker1973-m.bsky.social · 30/09/2026

Meet the Siberian long tailed tit, a tiny adorable fluffball with double eyelids. Original post

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ESA Space Science @science.esa.int · 28/09/2026

A successful Earth flyby improves Juice’s course to Jupiter Earlier today, Juice flew just 8640 km above the Indian Ocean and snapped these images with its onboard monitoring cameras. 1️⃣Africa, by Juice monitoring camera 2️⃣Madagascar, by Juice NavCam 3️⃣Moon, by Juice NavCam 🔭 🧪 #planetsci

Mostly black space, most of Earth visible at the top right of the image. Part of a spacecraft visible on the left.

Part of the island of Madagascar in black and white.

A crescent Moon, with about a quarter of the Moon showing. Many craters are visible.

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Gaia Sky @gaiasky.bsky.social · 29/09/2026

Gaia DR4 is coming on December 2, and we’ve been hard at work designing the catalogs for #GaiaSky. We’ve made some important changes compared to DR3. Wanna learn more? 👇 gaiasky.space/news/2026/ga...

gaiasky.space

Gaia Sky | DR4 star catalogs

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Chara @astrochara.bsky.social · 28/09/2026

Altair is a nearby A-type star. It is also one of the hottest nearby stars with X-ray emission, probably arising from corona around its equatorial regions, where convective envelope which sustain them persist on this highly oblate star. #art #astronomy #space #spaceart #star #Altair

This artwork depicts a fictional view of Altair's corona seen with SDO AIA camera's 171 Å channel, accompanied by some information.

At the centre is the star; the photosphere is entirely dark, and the corona can be seen as a faint band ringing the star's equator and intermediate latitudes, while the visible pole is dark. The corona is depicted as slightly heterogenous, with dark patches and bright spots scattered across it.

At top left is basic information about Altair (α Aql): mass of 1.86 ± 0.03 Solar masses, radii of 2.008 ± 0.006 Solar radii (equator) / 1.565 ± 0.014 Solar radii (pole), effective temperature of 6780 K (equator) / 8621 K (pole), and rotation period of 7.79 hours.

Top right contains my summary of Altair's coronal properties obtained from Robrade & Schmitt (2009). The coronal surface flux is comparable to solar background corona, the plasma temperature is similar to low activity stars like the Sun and is dominated by quiescent/weakly active regions and open magnetic fields with weak contributions from moderately active regions, and that the coronal structures are small (few %) relative to the star. Altair's X-ray flux varies, arising from both rotational modulation, as well as intrinsic variabilities, eg. emergence and decay of active regions. Flares are not detected, as expected.

Same as previous image, although Altair's limb and equator are outlined as solid line and dashed line, respectively.

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 27/09/2026

Fruit, the creator of the HR 8799 moon systems made a bsky account @fruiticle101.bsky.social. Go give her a follow!

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 27/09/2026

Part 2 of the HR 8799 systems by Fruit. This time we venture closer in and arrive at HR 8799 c, also named Offa. #Astronomy #Space #Planet #SpaceArt #Moon #Worldbuilding #Speculative #Exoplanet

A view of Eomaer, a fast spinning sub-earth with a darker submoon named Garmund. This system is the result of a merger. Eomaer is the only major moon in the system, but it likely had a bigger collisional family of objects in the past.

Description of the objects made by Fruit

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 26/09/2026

A moon system around HR 8799 b, designed by my friend. Very interesting moon system she has designed, CPDs of superjupiters are quite chaotic... #Space #Astronomy #SpaceArt #Worldbuilding #Exoplanet #Moon #Speculative

In the image you can see the 3 moons of HR 8799 b, with b being in the background. The first moon is a small Io-like object, the other 2 are significantly larger, high albedo sub-earths.

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Mario Livio @mariolivio.bsky.social · 26/09/2026

A Hubble image of the emission nebula NGC 2313. The bright star V565 — surrounded by four prominent diffraction spikes — illuminates a silvery, fan-shaped veil of gas and dust, while the right half of this image is obscured by a dense cloud of dust.

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Barrie Cull @barrie6.bsky.social · 26/09/2026

Today's #BirdOfTheDay theme chosen by Rob is #Pairs, photos with pairs of the same species in them. The Alt theme is #Green, photos with Green in the backgrounds not on the birds. I’ve got a #twofer today with this pair of Puffins and green in the background 🙂 I hope you have a lovely weekend.

A pair of Puffins are sleeping on a cliff, surrounded by pink sea thrift. The Puffins are showing their black and white plumage and their ted, yellow and blue coloured bills are tucked into their black wing feathers. The background is green.

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Melina Thévenot🏳️‍⚧️ @melina-iras07572.bsky.social · 25/09/2026

Two papers on metal-poor brown dwarfs with #JWST: arxiv.org/abs/2609.29365 (Aaron M. Meisner et al.) and arxiv.org/abs/2609.28746 (Chih-Chun Hsu et al.) Includes the first brown dwarf in the Gaia-Enceladus structure (remnant of a large merger galaxy).

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John F Wu @jwuphysics.bsky.social · 25/09/2026

Built a thing that #aatrosky may enjoy: galaxy-manifold.github.io

The galaxy SFR - stellar mass sequence shown on a phone screen, with galaxy image cutouts as well as lines showing the relation for galaxies based on subselections in Dn4000 break strength. All from the web app.

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zelario @zelario4f.bsky.social · 24/09/2026

Coy et al. (arxiv.org/pdf/2609.26874) newly analyzed the TESS eclipses of K2-141b and found eclipse depth of 80 ±20 ppm for this planet. 3 years ago as an HS student I looked at this data using my own shitty methods and got 86 ±28 ppm (0.3sigma off), so somehow I wasn't completely clueless haha 🪐

arxiv.org

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Zanzaverse @zanzaverse.bsky.social · 23/09/2026

Trying to speedrun #SST26 '1. Fighter', two remote-controlled fighters attack an asteroid 2. 'Freighter', two freighters in orbit around the Moon 3. 'Wings', a Deimos lander pulls its solar panel back for landing 4. 'Experimental', a Nuclear Salt Water Rocket being tested on the Moon.

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Hourly Cosmos @hourlycosmos.bsky.social · 22/09/2026

Helene - From Gordan Ugarković (ugordan.bsky.social) - flic.kr/p/bjWisY

Approximately natural color view of Helene taken by Cassini's narrow-angle camera on 2011-01-31.

Distance: 28 000 km
Phase angle: 84 deg

Magnified 2x.

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AAS Press Office @press.aas.org · 22/09/2026

Netherlands Research School for Astronomy (NOVA): First Microblazar Found Could Produce the Fastest Particles in the Milky Way www.astronomie.nl/nieuws/en/fi...

astronomie.nl

First microblazar found could produce the fastest particles in the Milky Way

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Hourly Cosmos @hourlycosmos.bsky.social · 22/09/2026

Cloud Shadows? - Juno - From Aster Cowart (terrasabaea.bsky.social) - flic.kr/p/TTZEcg

JunoCam image of the South Tropical Zone. This image captures numerous small (20-50km) convective systems rising above the surrounding clouds. This image has been enlarged 2x to show potential convective cloud shadows on the surrounding haze.

This image was acquired during the Perijove 6 imaging campaign on May 19, 2017. When this image was taken, Juno was near periapse at an altitude of 7,300 km . This image is based on initial processing efforts by Gerald Eichstädt.

Image Credit: NASA / SwRI / MSSS / Gerald Eichstädt / Justin Cowart

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casi-bev-art.bsky.social @casi-bev-art.bsky.social · 22/09/2026

Landslide Sublimating ice destabilizes a layered cliff face near Mars' pole, seen in the distance through a rock-strewn canyon.

digital painting of a canyon on mars with a dark sandy floor. layered, broken rocks rise on either side, with many strewn across the canyon. in the distance, a landslide tumbles down a cliff. wispy clouds stretch overhead

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Lou Baya Ould Rouis @lbor.bsky.social · 22/09/2026

New paper out! ☄️ Extremely-low-resolution spectroscopy from Gaia is great at finding white dwarfs hosting remnant planetary systems! However, identifying hosts who originate from B- and A-type stars is more challenging and requires precise metal-enriched atmospheric fits. ➡️ arxiv.org/abs/2609.22033

arxiv.org

Searching for Massive Remnant Planetary System Hosts with White Dwarf Gaia XP Spectra

Remnant planetary systems around massive white dwarfs ($M_{\rm WD} > 0.8\,{\rm M}_\odot$) are intrinsically rare and remain poorly characterized. As the evolutionary endpoints of intermediate-mass B- ...

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 21/09/2026

A recently discovered planet around β Pictoris, β Pictoris d is the smallest of the 3 giants in the system, being only 2-3 times more massive than Jupiter. Inspired by the following paper arxiv.org/pdf/2609.21125 #Space #Astronomy #SpaceArt #Exoplanet #Planet

Beta Pictoris d, a hazy superjovian with a pale color. A small icy planet, brought from the outer belt casts its shadow on it. It will get ejected at high velocities, like many others before it.

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🦌 The Deer Whisperer 🦌 @thedeerwhisperer.bsky.social · 21/09/2026

Good night, Bluesky! Sunset on Puget Sound, Washington 📸marysmark

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Hourly Cosmos @hourlycosmos.bsky.social · 21/09/2026

Up close and personal with the haze - From Val Klavans (valklavans.bsky.social) - flic.kr/p/e9Y7x6

This is an approximate true color image of Titan's haze layers, taken by Cassini's Imaging Science Subsystem during Cassini's 91st encounter with Titan on April 5, 2013. Titan's upper haze layers appear blue, while its main atmospheric haze appear orange in this view. The difference in color is most likely due to particle size rather than composition. The blue haze probably consists of smaller particles than the orange haze.

These images was taken on April 05, 2013 and received on Earth April 07, 2013. The camera was pointing toward TITAN at approximately 106,378 miles (171,198 kilometers) away, and the images were taken using the BL1, GRN, CB1, CL1 and CL2 filters.

Credit: NASA / JPL / SSI / composite by Val Klavans
titansaturnsmoon.wordpress.com

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Inverse 5040 @inverse5040.bsky.social · 20/09/2026

Two artworks in one day? The harvest is bountiful this season. Left: the star Vega, not attempted true color (I just used an off-the-shelf blackbody calculator for the color and eyeballed how much darker the equator would be) Right: Granules and starspots greatly exaggerated to be visible.

A digital drawing of the fast-spinning A-type star Vega (Alpha Lyrae). Limb and equatorial darkening are not indicative of reality. Color only approximate.

A digital drawing of Vega again, but with surface features (starspots and granules) greatly exaggerated. Equatorial and limb darkening not indicative of reality, color only approximate.

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✷🔮𝐒𝐭𝐚𝐫𝐬𝐈𝐧𝐓𝐡𝐞𝐒𝐤𝐲✨✷ @tethylinaf101.bsky.social · 20/09/2026

Sorry i haven't been active much. I've just been getting to know people in the real world, lol✌️ Anyway, here are some Star systems with some cool Planets (look at the alt texts for more info) #art #space #doodles

TW Hydrae is a T Tauri Type star with
One Confirmed Exoplanet (b) (atleast thats what i saw)
And six Candidates (h, d, c, g, f, e)

Hd 10180 is a G type Main Sequence with 6 Confirmed planets (c, d, e, f, g, h) and 3 Candidates (b, i, j)

HD 2078 1 and 2 are wide Binary stars both with planets

HD 20782 has one Jovian sized planet (b) that currently has the most eccentric orbit we know of

HD 20781 has 4 planets. 2 possibly rocky (b, c) and 2 probable Mini Neptunes (d, e)

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 20/09/2026

Collection of some art I've done for jovian planets in the last months. #Space #Astronomy #SpaceArt #Exoplanet #GasGiant #Planet

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S.Dom AKA Wolf 🦌 @woestruction.bsky.social · 20/09/2026

Somewhere in a distant planetary system, some civilization decided "the moon next to the one we live on looks pretty comfortable, maybe we should check it out?" For the most part they were correct, though their rover didn't last nearly as long as they hoped. "Meteorological malfunctions" they said.

A blue gas giant hangs in the sky above a colorful landscape, purple-red mountains in the distance tower over a terrain awashed by various sandy and dull green hues. A snaking trail in the dirt extends off towards the horizon, with a small rover wrapped in golden foil overturned on its bank. Following the trail leads the the base of a tornado, wrapped in a debris cloud. The funnel twists up into a stormy sky of heavy, chaotic clouds.

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Melina Thévenot🏳️‍⚧️ @melina-iras07572.bsky.social · 20/09/2026

Elias 2-24 and surrounding nebula with @eso.org VISIONS commons.wikimedia.org/wiki/File:El... This T Tauri star hosts a protoplanetary disk and one protoplanet. Newly created wikipedia article: en.wikipedia.org/wiki/Elias_2...

A yellow star surrounded by a blue nebula.

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Hourly Cosmos @hourlycosmos.bsky.social · 19/09/2026

Crescents In The Dark - From Gordan Ugarković (ugordan.bsky.social) - flic.kr/p/7St2iW

TBD. N1360955901

Ganymede and Io brightened 4x for better visibility.

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 19/09/2026

Version of @dangeroussafety.bsky.social's chart with drawn surfaces. The chart provides a guide to the appearance of Jovian and Neptunian planets based on their temperature. #Astronomy #Space #Planet #Exoplanet

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 19/09/2026

WASP-47 A very peculiar system I must say... A super-Earth orbiting inwards of a hot Jupiter and a hot Neptune. A temperate giant also lies further outward. It is kind of similar to 55 Cancri, but with a more extreme inner system.

WASP-47 e, b, d and an arrow pointing to the out of frame c

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Chara @astrochara.bsky.social · 18/09/2026

iopscience.iop.org/article/10.3... Paper reports detection of a star near Spica. As far as I understand it, it hasn’t been confirmed to be part of the system, but being relatively bright, chance alignment is very unlikely. Paper proposes naming it “Arista”. #astronomy #space #star

iopscience.iop.org

Discovery of Spica’s Arista: Alpha Virginis is a Hierarchical Triple System

Discovery of Spica’s Arista: Alpha Virginis is a Hierarchical Triple System* , Waisberg, Idel, Katz, Boaz

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Phil Plait @philplait.bsky.social · 18/09/2026

Sure, 6 billion years sounds like a long time, but it's not eternity. Not when it comes to the lifetime of the sun. So what happens then? www.scientificamerican.com/article/how-... 🧪 🔭

scientificamerican.com

This is how the sun will die

Our sun is on a long, strange trip to its eventual demise. Here are the key stops along the way

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ursiday @ursiday.bsky.social · 18/09/2026

I'm so excited about the newly described Leopardus tilcayo #cats

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Jamie Scott 🏴󠁧󠁢󠁳󠁣󠁴󠁿 @jcsctoan.bsky.social · 18/09/2026

Today's #BirdofTheDay theme by Rob is #Paridae and of the species. Blue tit in the bushes. Have a good day folks #rspb.bsky.social #rspb.scotland.bsky.social #NaturePhotography #nature #wildlife #wildlifephotography #birds #birdphotography #birdwatching #eastcoastkin

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Melina Thévenot🏳️‍⚧️ @melina-iras07572.bsky.social · 18/09/2026

Water Cloud and Chemical Modulations in the Coldest Brown Dwarf arxiv.org/abs/2609.20664 (Brittany E. Miles+)

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Birbbirbbirb1 @birbbirbbirb1.bsky.social · 17/09/2026

HW Virginis When stars have a shadow... Art from September 12 #Astronomy #Stars #Art #Space

The hot subdwarf illuminates its much colder companion. Part of the "dayside" brightness however, is due to the irradiated surface being very hot, reaching temperatures of above 10000 K.

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LimpShimb @limpshimb.bsky.social · 17/09/2026

Antares Nebula

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🇨🇦JOY 🇨🇦 @joycomes.bsky.social · 15/09/2026

Rose necked Parakeet 41 cm Sub-Sahara Africa, South Asia Live in large flocks Live 20-30 years in the wild Male feeds the female who incubates for 24 days both parents feed the chicks for 7 weeks After they fledge parents feed them until they are three months old they then join the flocks

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