Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 21hToday’s arXiv day: PALTA-1, an ultracool dwarf (not sure if a very low mass star or a brown dwarf) with a candidate sub-Jupiter-mass planet detected by astrometry. arxiv.org/abs/2610.09965arxiv.orgAstrometric planet search around southern ultracool dwarfs: V. Discovery of the exoplanet candidate PALTA-1 bWe report the discovery of PALTA-1 b, a sub-Jupiter mass exoplanet candidate orbiting the nearby early-L dwarf DENIS-P J1253108-570924 (DE1253-57) located at a distance of ~17 pc. The exoplanet was di... 191
Reposted by Birbbirbbirb1EUMETSAT @eumetsat.int · 08/10/2026PUMA-2025 delivered! 🌍🛰️ Over the past two years, every sub-Saharan African country has been equipped with a PUMA-2025 station, enabling national meteorological services to receive and process MTG data distributed via EUMETCast-Africa. 1124
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 08/10/2026Rest in peace. Her efforts shall be forever remembered by humanity! 000
Reposted by Birbbirbbirb1ToughSF @toughsf.bsky.social · 07/10/2026Vaalbara is thought to be Earth's earliest supercontinent. It's formed of cratons (stable pieces of continents) up to 3.6 billion years old with palaeomagnetic and asteroid impact traces that line up today. en.wikipedia.org/wiki/Vaalbara Illustrated: olivermcrae.artstation.com/projects/lVb... 0349
Reposted by Birbbirbbirb1Luna Rose B. @whirligig-girl.bsky.social · 16/09/2026Faux Astrophotos of each planet 1175
Reposted by Birbbirbbirb1Dilong @dilong.bsky.social · 06/10/2026Asteroid mission for @singularityg3.bsky.social ’s art challenge idea 0156
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 05/10/2026Trying something more unique... I've decided to make a project in strawpage where I illustrate stars in the immediate vicinity of the sun. For now there's only 5 stars, but it will receive updates with time. stellarneighbors.straw.page #Astronomy #Space #Stars #SpaceArt 060
Reposted by Birbbirbbirb1Zanzaverse @zanzaverse.bsky.social · 04/10/2026Lemon visits the landing site of a lunar mass-driver launched cargo capsule, along with her donkey Fanny, and others. 15118
Reposted by Birbbirbbirb1Dr. Laci Brock 🪐 @stellerarts.com · 05/10/2026All my current paintings in progress are in their awkward/ugly phase lol, so here is one I did last October! A spooky star-forming region in the Eagle Nebula I named Leviathan’s Wake. I’ll bring back prints at the end of this month 🐉 1334650
Reposted by Birbbirbbirb1ESA Space Science @science.esa.int · 05/10/2026Can planets emerge from the deaths of stars? 💀 Astronomers looking through Hubble data from 1999 have identified unusual amounts of niobium in the chemical signatures from a white dwarf. 🔭 🧪 36910
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 04/10/2026Sol, the star of the Solar System. The constant and dominating, yet distant and hands-off, presence who guides all planets and dusts. Image obtained on 2026-09-21. #ACelestialJournal #art #gijinka #astronomy #space #SolarSystem #Sun #天体擬人化 1142
Reposted by Birbbirbbirb1Jamie Scott 🏴 @jcsctoan.bsky.social · 04/10/2026I've gone for the Alt #BirdofTheDay theme today #Blue, as chosen by Rob; any bird with blue in its plumage. Blue tit in the bushes. Have a good day folks #ECK 814814
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 03/10/2026Quick art of the Alpha Centauri system #Astronomy #Space #SpaceArt #Stars 0140
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 02/10/2026On today's arXiv: the eccentricity of the debris disc of Epsilon Eridani arxiv.org/abs/2610.00462 The belt is found to be nearly circular, suggesting it consists of dynamically cold planetesimals that haven't been strongly perturbed. #astronomy #space #star #debrisdisk #EpsilonEridaniarxiv.orgHow eccentric is the debris disk of epsilon Eridani? ALMA reveals a near-circular beltThe nearby (3.2 pc) K2V star $ε$ Eridani hosts the closest detected debris disk and an exo-Jupiter analog ($ε$ Eridani b). In this work, we reanalyse ALMA Band 6 (1.29 mm) observations of $ε$ Eridani ... 121
Reposted by Birbbirbbirb1Inverse 5040 @inverse5040.bsky.social · 01/10/2026if enrico fermi was slammed in the groin with a bowling ball he could say "ouch oof my fermions" and he wouldn't be wrong 011
Reposted by Birbbirbbirb1ToughSF @toughsf.bsky.social · 01/10/2026A 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. 1225
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 01/10/2026Some 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 081
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 30/09/2026As 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... 1206
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 30/09/2026Today'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/2609.37597arxiv.orgTOI-6981 b: a transiting sub-Neptune at the water ice lineWe 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... 181
Reposted by Birbbirbbirb1ESA Space Science @science.esa.int · 30/09/2026Inspector 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. 🔭 🧪 ☀️ 15867244
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 29/09/2026Today'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 174
Reposted by Birbbirbbirb1Massimo (mirror) @rainmaker1973-m.bsky.social · 30/09/2026Meet the Siberian long tailed tit, a tiny adorable fluffball with double eyelids. Original post 442914368
Reposted by Birbbirbbirb1ESA Space Science @science.esa.int · 28/09/2026A 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 7348102
Reposted by Birbbirbbirb1Gaia Sky @gaiasky.bsky.social · 29/09/2026Gaia 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.spaceGaia Sky | DR4 star catalogs 073
Reposted by Birbbirbbirb1Chara @astrochara.bsky.social · 28/09/2026Altair 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 3266
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 28/09/2026I dont think bugs should be marked personally, I believe the people that dislike them so much should be more considerate. Bugs are still an incredibly important part of nature and should be appreciated! 000
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 27/09/2026Fruit, the creator of the HR 8799 moon systems made a bsky account @fruiticle101.bsky.social. Go give her a follow! 040
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 27/09/2026Garmund has more, smaller craters, however I didn't add them and I've only realized it after I stopped editing the art. 030
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 27/09/2026Part 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 182
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 26/09/2026A 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 0101
Reposted by Birbbirbbirb1Mario Livio @mariolivio.bsky.social · 26/09/2026A 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. 113125
Reposted by Birbbirbbirb1Barrie Cull @barrie6.bsky.social · 26/09/2026Today'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. 1626454
Reposted by Birbbirbbirb1Melina Thévenot🏳️⚧️ @melina-iras07572.bsky.social · 25/09/2026Two 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). 1104
Reposted by Birbbirbbirb1John F Wu @jwuphysics.bsky.social · 25/09/2026Built a thing that #aatrosky may enjoy: galaxy-manifold.github.io 2386
Reposted by Birbbirbbirb1zelario @zelario4f.bsky.social · 24/09/2026Coy 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 073
Reposted by Birbbirbbirb1LimpShimb @limpshimb.bsky.social · 24/09/2026Crab Nebula #spaceart #space #astronomy 071
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 24/09/2026Some of the people that draw planets with faces just add eyes on texture maps taken from the internet and projected in map-to-globe, there's some that draw the surfaces, although obivously, most people prefer to keep them faceless when they reach that point, preserving the view of the surface. 100
Reposted by Birbbirbbirb1Zanzaverse @zanzaverse.bsky.social · 23/09/2026Trying 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. 06418
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 24/09/2026Thinking about drawing art is pain... Researching art is pain... Actually drawing the art is pain... 150
Reposted by Birbbirbbirb1Hourly Cosmos @hourlycosmos.bsky.social · 22/09/2026Helene - From Gordan Ugarković (ugordan.bsky.social) - flic.kr/p/bjWisY 07413
Reposted by Birbbirbbirb1AAS Press Office @press.aas.org · 22/09/2026Netherlands Research School for Astronomy (NOVA): First Microblazar Found Could Produce the Fastest Particles in the Milky Way www.astronomie.nl/nieuws/en/fi...astronomie.nlFirst microblazar found could produce the fastest particles in the Milky Way 123
Reposted by Birbbirbbirb1Hourly Cosmos @hourlycosmos.bsky.social · 22/09/2026Cloud Shadows? - Juno - From Aster Cowart (terrasabaea.bsky.social) - flic.kr/p/TTZEcg 0555
Reposted by Birbbirbbirb1casi-bev-art.bsky.social @casi-bev-art.bsky.social · 22/09/2026Landslide Sublimating ice destabilizes a layered cliff face near Mars' pole, seen in the distance through a rock-strewn canyon. 01810
Reposted by Birbbirbbirb1Lou Baya Ould Rouis @lbor.bsky.social · 22/09/2026New 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/2609.22033arxiv.orgSearching for Massive Remnant Planetary System Hosts with White Dwarf Gaia XP SpectraRemnant 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- ... 092
Birbbirbbirb1 @birbbirbbirb1.bsky.social · 21/09/2026A 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 1154
