iiinova — where your digital self keeps evolving

Reposted by Ben Sutlieff

Yvette Cendes @whereisyvette.bsky.social · 21/09/2026

If @science.org is covering it, I guess I should share something here- we have for the first time definitively detected radio emission from a planet around another star! 🔭🧪🎢 What does this mean? Details in thread! (But TL;DR- still not aliens) 🧵 www.sciencenews.org/article/exop...

sciencenews.org

First radio waves seen from an exoplanet hint at otherworldly auroras

The gas giant Beta Pictoris b, about 63 light-years away, has the mass of 10 Jupiters and a magnetic field thousands of times as strong as Earth’s.

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Evert Nasedkin @evertnasedkin.bsky.social · 30/07/2026

🔭 New paper day! 🪐 This time from Merle Schrader, a PhD student in the brown dwarf group at Trinity College Dublin. Today, they're publishing a fresh look at SIMP-0136, using principal component analysis, identifying the mechanisms driving its atmospheric variability. arxiv.org/abs/2607.26182

arxiv.org

The JWST weather report: Unravelling the atmospheric variability of isolated worlds using principal component analysis

Brown dwarf variability directly probes atmospheric dynamics beyond the Solar System, and recent JWST time-resolved spectroscopy has opened a new window into these processes. Principal component analy...

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Ben Sutlieff @bensutlieff.bsky.social · 24/07/2026

Very sad to hear this. Ralph was the director of API during the first half of my PhD there and he always took such a kind interest in the professional and personal lives of everyone in the institute - our friendly chats whenever we passed in the corridor always brightened my day. He will be missed.

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Phil Plait @philplait.bsky.social · 16/07/2026

The purloined planet: Astronomers find a third planet around the nearby very young star Beta Pictoris… and it was hiding in plain sight for over a decade! [with amazing video of the planet's orbital motion] badastronomy.beehiiv.com/p/a-third-pl... 🔭 🧪

badastronomy.beehiiv.com

A third planet for the nearby star Beta Pictoris!

The gas giant has been hiding in plain sight for over a decade

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Jayne Birkby @jaynebirkby.bsky.social · 15/07/2026

Hide-and-seek champion award goes to the newly discovered beta Pic d! 🏆 Please welcome the newest member of the exoplanet zoo, and be kind, it’s a little shy, it’s been hiding in direct imaging data for over a decade!

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Ben Sutlieff @bensutlieff.bsky.social · 15/07/2026

With the press release out, I'm delighted to share our work reporting the discovery of a 3rd planet in the beta Pictoris system! Say hello to beta Pic d - a gas giant with 2.4 times the mass of Jupiter that takes 91 years to orbit its host star, far longer than the 2 known planets in the system 🪐🔭

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Katie Mack @astrokatie.com · 01/04/2026

In honor of (hopefully) today's launch of NASA's Artemis II mission, the first crewed mission to orbit the Moon in more than 50 years, here is a to-scale graphic of exactly how far away the Moon actually is. (Click image to expand.) You could fit about 30 Earths between the Earth and the Moon!

A scale illustration of the Earth and the Moon, with the Earth on the far left, lots of black, and then the Moon on the far right, about 30 Earth diameters away.

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Cian O'Toole @astrotoole.bsky.social · 28/03/2026

I am delighted to share that my first paper has now been accepted for publication in Astronomy and Astrophysics and is now on the arXiv!! arxiv.org/abs/2603.24663 In this paper I disentangle the drivers of variability in three early L-dwarfs using HST/WFC3. More info below 🧵!!

arxiv.org

Disentangling auroral, cloud and magnetic spot driven variability in three early L-dwarfs with HST/WFC3

Variability monitoring provides an unparalleled insight into the atmospheric processes of brown dwarfs and directly imaged exo-planets. Inhomogeneous clouds, aurorae and magnetic spots have all been p...

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Johanna Vos @johannavos.bsky.social · 27/03/2026

TWO recently accepted papers on arxiv today from our group, led by PhD students @maddielam.bsky.social and @astrotoole.bsky.social. If you like brown dwarfs, variability, clouds, aurorae and/or magnetic spots there is something here for you! 👀 arxiv.org/abs/2603.24662 arxiv.org/abs/2603.24663

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Maddie Lam @maddielam.bsky.social · 27/03/2026

Proud to announce that my first PhD paper has now been accepted and is live on arXiv!! arxiv.org/abs/2603.24662 In this paper I provide the first analyses of JWST spectra of a sample of young, co-eval L dwarfs, focusing on the silicate absorption and whether there are any equator-to-pole variations.

arxiv.org

Clouds with a silicate lining: Using JWST spectra to probe atmospheric diversity in young AB Dor L dwarfs

We present the first full JWST NIRSpec Prism and MIRI LRS 0.6 - 14 $μ$m (R ~ 100) spectra and analysis of five ~ 133 Myr L dwarf members of the AB Doradus moving group and one probable $\sim 500$ Myr ...

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RAS Journals @rasjournals.bsky.social · 28/11/2025

Published in #MNRAS: "Chasing the storm: investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves", Sutlieff et al. This is Fig. 1: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @royalastrosoc.bsky.social

The left-hand and centre panels are examples of the final processed LBT/ALES + dgvAPP360 images produced when the data were median-combined in both time and wavelength. Left: the case where no artificial companions were injected to the data, so only the bright host star HD 1160 A and its bonafide companion HD 1160 B is visible. Centre: similar to the left-hand panel, but three artificial companions have been injected at 90° intervals in position angle from HD 1160 B. All three artificial companions were injected with contrasts of 2.88 x 10^(-3) (6.35 mag) relative to the host star. This image is a composite; for the purposes of the analysis, only one companion was injected at a time. Right: a single frame of data highlighting examples of the apertures (solid lines) and annuli (dashed lines) used to extract photometry and background measurements for the host star (in green) and artificial companions (in blue). The left-hand and centre panels use the same arbitrary logarithmic colour scale, while the right-hand panel uses a different one, and all three panels are aligned to north, where north is up and east is to the left.

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Ben Sutlieff @bensutlieff.bsky.social · 26/03/2026

And while I'm at it, a belated promo for my latest first-author paper (out late last year). I've been using APP coronagraphs as a tool to look for changes in brightness in imaged companions (exoplanets & brown dwarfs) due to variations in their atmospheres such as clouds or radiative convection 🪐🔭

arxiv.org

Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves

Substellar companions such as exoplanets and brown dwarfs exhibit changes in brightness arising from top-of-atmosphere inhomogeneities, providing insights into their atmospheric structure and dynamics...

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Ben Sutlieff @bensutlieff.bsky.social · 26/03/2026

For all the coronagraph fans out there: I'm pleased to share our paper (led by @mattkenworthy.bsky.social) on the design & performance of the Apodizing Phase Plate coronagraph for the ERIS instrument at the Very Large Telescope + our recommendations for using it to study exoplanets & brown dwarfs 🪐🔭

arxiv.org

The VLT/ERIS grating vector Apodizing Phase Plate coronagraph

We describe the design, laboratory manufacture, and on-sky testing of the grating vector apodizing phase plate (gvAPP) coronagraph for the Enhanced Resolution Imager and Spectrograph (ERIS) on the Ver...

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Matthew Kenworthy @mattkenworthy.bsky.social · 12/09/2025

My periodic reminder for #astrosci #astrodon #exoplanets Early Career Researchers to please, please, please have a simple web site with your current email address on it - rationale here: kenworthy.space/advice/

A pen sketch of a web page for an astronomer, showing name, email, optional phone number, and professional contact details, with a one sentence summary of their research and an ADS link.

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Ben Sutlieff @bensutlieff.bsky.social · 20/06/2025

Swapped ‘on sky’ in the astronomical sense for ‘on Skye’ in the Scottish sense last week - I’d been meaning to visit this stunningly beautiful place since moving to Edinburgh and it definitely lived up to expectations! So many amazing hikes and things to see (+ we even had surprisingly good weather)

A selfie of me smiling in front of The Storr, a mountain on the Trotternish peninsula of the Isle of Skye in Scotland, which has several unique jagged rock formations.

The view from the summit of Blà Bheinn, a mountain on the Isle of Skye that has stunning views over a large area of the island including the Black Cuillin ridge, a famous mountain range that gets its name from the dark colour of the gabbro rock it is composed of.

A photo of the cliffs at Neist Point, the headland that represents the westernmost point of the Isle of Skye. There is a yellow and white lighthouse on the top of the cliffs with green hills in the foreground. There is a seabird colony on the cliffs themselves, perched high above the sea.

A photo of Dun Beag Broch shortly after sunset. Dun Beag Broch is an iron-age broch, largely in ruins today but the walls can still be seen. There are mountains in the distance and the sky is a sunset gradient of blue to orange.

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Matthew Kenworthy @mattkenworthy.bsky.social · 04/06/2025

Together with Sebastiaan Haffert our review on “High-Contrast Coronagraphy” is out - writing an ARA&A review has been on my academic bucket list, and I’m very proud of the result. It uses the showyourwork! framework, making it a completely reproducible paper. #FAIR #astrodon #exoplanets

Different telescope mirror apertures and their resultant point spread functions.

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Planets @ Oxford @oxoplanets.bsky.social · 01/04/2025

Congratulations to Dr Ben Sutlieff (@bensutlieff.bsky.social) for his pop up talk describing his poster about mapping exoplanet atmospheres with ground based observations 🔭 #ukexom25

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Sera Markoff @profsera.bsky.social · 19/02/2025

Please help us get the word out: our 6 wk astrophysics 🧪🔭summer research program for international MSc students is open for application! Note this is aimed at students from disadvantaged regions or under-represented groups in astro! I will host one position on black holes ⚫️! aspire.science.uva.nl

aspire.science.uva.nl

ASPIRE

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Matthew Kenworthy @mattkenworthy.bsky.social · 30/08/2024

With astronomy job season approaching, if you’re a PhD or early postdoc, PLEASE make a webpage and put your current contact details on it, so that searching for “< your name > astronomer” finds you first - more explanation how and why here: Unsolicited Advice #astrodon 🔭🪐

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Ethan Mollick @emollick.bsky.social · 08/12/2024

Sharks are older than the rings of Saturn. This paper finds that the rings are no older than 400M years. Sharks date back to at least the Late Ordovician Period, 450M years ago.

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Briony Allen @brionya.bsky.social · 06/12/2024

Lovely to go on the Dirleton Solar Walk and see some of what @bensutlieff.bsky.social has been up to 🪐 Would definitely recommend, and Neptune is near a great garden centre if you need cake motivation.

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Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 12/10/2024

Calling the Lothians - fancy an autumnal planet walk? The beautiful historic village of #Dirleton is proud to announce that dirleton.solar is open! 🥳😎 Take a stroll from the Sun in the village through to Neptune at the Archerfield Walled Gardens. Scan the QR codes for planet-facts en route! 🔭

A leafy grassy verge, surrounded by trees, sports a tall pole with a silver orb on top. This is the start of the Dirleton solar walk.

Inside on a table and all lined up are the planet markers before they were installed in the outside. You can see the swirly pinks on Jupiter and the pockmarks on mercury. Bluer planets for Neptune uranyst and earth are in the distance with red mars right at the end of the table

A wooden marker saying "Earth" with a perspex earth like planet on the top. The autumnal leaves scatter the grass verge with trees surround a sort of grassy paddock in the background.

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More Stressed Chameleon @mark-nicol.bsky.social · 06/12/2024

Just found out that some of the talented people at work helped with this project to make a walk that takes you through the solar system in the very lovely heart of East Lothian. Definitely on the list to try out soon. dirleton.solar/flight-plan

dirleton.solar

Getting there. Plan your journey to the Dirleton Solar Walk | Dirleton Solar System Scale Model

Plan your visit to the Dirleton Solar Walk using our maps, tips and information. Once you are here, explore our great local facilities, making use of our detailed map or what3words location markers. ...

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Ben Sutlieff @bensutlieff.bsky.social · 06/12/2024

Very excited to be at the opening of the Dirleton Solar Walk today - a scale model of our Solar System in the East Lothian countryside, placed over 1.2km of the John Muir Way walking route! 🪐🔭 This was a really fun project to support and I highly recommend it for those local, esp. for kids/families!

A sign showing a map of the Dirleton Solar Walk, with information describing its scale (1:3.6 billon) and instructions on how to access its augmented reality features for each planet.

Myself next to the marker for the planet Jupiter, which consists of a fence post with a sign on top showing an artistic representation of Jupiter and a metallic ball representing its relative size according to the scale. There is also a QR code linking to information about the planet and an AR representation.

The marker for the planet Saturn, with a view of the countryside around Dirleton.

Myself and my colleague Gergely Friss attempting to demonstrate the augmented reality visualisation of the planet Neptune. I am trying to hold the planet but my hands are in totally the wrong place.

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Ben Sutlieff @bensutlieff.bsky.social · 05/12/2024

In Dundee yesterday for the Scottish Universities Physics Alliance Annual Cormack Astronomy Meeting (longest conference name ever? 🔭) with @agastro.bsky.social, @dirkscholte.bsky.social, and others. A full day of talks, but still managed to sneak in a little bit of sunrise sightseeing!

The RSS Discovery, a historic barque-rigged auxiliary steamship built in Dundee and launched in 1901. It carried Robert Falcon Scott and Ernest Shackleton on their first journey to the Antarctic. It is now a museum ship in Dundee.

A view over the River Tay, just before sunrise. The sky is yellow and the water is reflective like a mirror. A bird (a cormorant, I think) is swimming by.

The McManus art gallery in Dundee. It is an impressive gothic revival building with green trees on either side and a curved staircase leading up to the main entrance.

The view as seen from Dundee Law (a hill in Dundee) shortly after sunrise, with the sun low in the sky to the east. The city below is in the foreground with the River Tay behind it. The Tay Rail Bridge over the river can be seen.

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Andrea Luck @andrealuck.bsky.social · 01/12/2024

Reposting this video because I think everyone needs to see it. We’re so used to seeing Martian dust storms in movies, but this is actual footage, this is real! 🔭

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Kevin M. Gill @kevinmgill.bsky.social · 26/11/2024

An enormous 5,000 kilometer wide storm in Jupiter’s north polar region. Imaged by NASA’s Juno orbiter on November 24th during Perijove 67 approach.

A huge circular storm

NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill

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Philip Muirhead @philipmuirhead.bsky.social · 26/11/2024

Check out BU PhD-student @alliemccarthy.bsky.social's paper just accepted to ApJL! JWST spectral light curves of SIMP 0136 show clear pressure-dependence, indicating three variability mechanisms: clouds, hot spots and C chemistry. @johannavos.bsky.social is the JWST PI! arxiv.org/abs/2411.16577

arxiv.org

The JWST Weather Report from the Isolated Exoplanet Analog SIMP 0136+0933: Pressure-Dependent Variability Driven by Multiple Mechanisms

Isolated planetary-mass objects share their mass range with planets but do not orbit a star. They lack the necessary mass to support fusion in their cores and thermally radiate their heat from formati...

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Jason Wang @thejason.wang · 23/11/2024

Optimist: The cup is half full Pessimist: The cup is half empty Exoplanetary scientist: We've detected water in the cup!

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Dr James O'Donoghue 🪐 @interplanetary.bsky.social · 18/11/2024

These are the planets to scale not only in size, but also in their tilt and rotation speed. Pluto and Ceres (a couple of dwarf planets) are included whether you like them or not 🫣

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Ben Sutlieff @bensutlieff.bsky.social · 23/11/2024

Finally got to experience a snow day at the observatory!! I only wish I had a sledge… 🔭☃️ (also saw this excellent snowman on Blackford Hill for which I cannot take credit)

A selfie of me in front of the Royal Observatory Edinburgh. There is a lot of snow on the ground, with some grass poking through and a few scattered trees.

A view of a snow-covered Arthur’s Seat (an extinct volcano in Edinburgh) as seen from Blackford Hill.

A landscape shot showing the snow on Blackford Hill and the Braid Hills beyond. In the far distance, the much taller Pentland Hills can just about be seen through some clouds. A radio mast is visible on the right.

A very happy snowman (not built by me!) with a large smile and sticks for arms on Blackford Hill. Arthur’s Seat can be seen in the background on the right, as well as Edinburgh Castle on the left.

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Astronomy Picture of the Day 🪐 @apod.shinyakato.dev · 19/11/2024

What's happening with these clouds? While it may seem that these long and thin clouds are pointing toward the top of a hill, and that maybe a world-famous observatory is located there, only part of that is true. In terms of clouds, the formation is a chance superposition of impressively periodic undulating air currents in Earth's lower atmosphere. Undulatus, a type of Asperitas cloud, form at the peaks where the air is cool enough to cause the condensation of opaque water droplets. The wide-angle nature of the panorama creates the illusion that the clouds converge over the hill. In terms of land, there really is a world-famous observatory at the top of that peak: the Carnegie Science's Las Campanas Observatory in the Atacama Desert of Chile. The two telescope domes visible are the 6.5-meter Magellan Telescopes. The featured coincidental vista was a surprise but was captured by the phone of a quick-thinking photographer in late September. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)

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Andrea Luck @andrealuck.bsky.social · 22/11/2024

JWST observations of the ice giant Uranus over 1 year! Full size, more info & single images: flic.kr/p/2pUN7Ec 🔭 Credit Processing: Andrea Luck CC BY Raw Data: NASA/ESA/CSA/STScI 3 Frames 2023-02-06, 2023-09-04 PI: Klaus Pontoppidan, JPL 2024-02-06 PI: Naomi Rowe-Gurney, RAS

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Andrew Steele @statto.bsky.social · 21/11/2024

There’s more to rainbows than the human eye can see: here’s how a rainbow extends into the infrared and ultraviolet. Photos: 1. Infrared 2. Visible (obviously) 3. Ultraviolet, and 4. A composite showing how UV is beyond the violet in a rainbow, and IR beyond the red end. 🧪 #photography

An infrared photo of a rainbow: a strange, ghostly-looking rainbow in a mostly black and white photo, with a faintly red outer edge and a cyan inner edge, and what look like a few even fainter ‘echo’ bows inside

A regular visible-light pic of a rainbow

An ultraviolet picture of a rainbow: a dark, foreboding landscape with a deep purple stripe emanating from it, and a grey stripe inside

A composite of the three preceding photos, showing that the infrared bow is ‘outside’ the visible light rainbow, and the ultraviolet bow ‘inside’

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Benjamin Pope @benjaminpope.bsky.social · 21/11/2024

Applications are open til April 30 2025 for international applicants to do a Masters + PhD combo with me in astrostatistics at Macquarie University in Sydney! www.mq.edu.au/research/phd...

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Ben Sutlieff @bensutlieff.bsky.social · 20/11/2024

The view from the roof of Edinburgh’s Royal Observatory today - beautiful blue skies, but it’s definitely starting to feel like winter here (morning frost, peak temperature of 1°C, sunset before 4pm) ☀️🥶🔭

The view as seen from the roof of the Royal Observatory Edinburgh. Arthur’s Seat (a well known hill and extinct volcano) can be seen in the centre, with the sea behind it. Before the hill, many houses can be seen. In the foreground there are several bare trees. The sky is blue and mostly clear, with only a couple of small clouds above Arthur’s Seat.

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Ben Sutlieff @bensutlieff.bsky.social · 19/11/2024

Delighted to welcome my friend and astrophotographer extraordinaire @joshduryphotomedia.bsky.social to Bluesky! 🔭 #astrophotography

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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 19/11/2024

Folks, Nov 20 is Transgender Day of Remembrance. 🏳️‍⚧️ Today, and especially in today’s climate, we remember those we've lost to violence and hatred. Let's stand together in solidarity, grief, and unity with our Trans communities, fighting for acceptance and safety for all. Some resources 👇 📸 GLAAD

A graphic showing a single candle that has a flame that is multicoloured in the same colours as the Trans flag. The words "Nov 20th is Transgender Day of Remembrance" are on there.

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Hannah Wakeford @stellarplanet.bsky.social · 19/11/2024

PhD Advertisement! 4-yr PhD position as part of the EPSRC Aerosols CDT to work with me and Prof Jonathan Reid at Bristol on Laboratory experiments to measure the Optical Properties of Silicate aerosols for applications to exoplanet atmospheres. See Application instructions and details via link

aerosol-cdt.ac.uk

2025 projects | Aerosol Science CDT

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John Gizis @johngizis.bsky.social · 18/11/2024

A brown dwarf astronomy starter pack. Let me know if you want to be added. It was @markmarley.bsky.social ‘s idea. 🔭 go.bsky.app/UVjXNLA

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MaggieBeth @maggiebeth.space · 15/11/2024

Made a starter pack for exoplanetary astronomers! Reply to this skeet if you’d like to be added! 🔭 🧪 go.bsky.app/8T1wFxu

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Ben Sutlieff @bensutlieff.bsky.social · 16/11/2024

Hi new followers! Seems like a good time for an #introduction post - I'm Ben, a postdoctoral researcher in astronomy based in Edinburgh. I study the atmospheres & weather of exoplanets (and brown dwarfs, their higher mass cousins) using observations from telescopes both on the ground and in space 🪐🔭

The artwork from the cover of my PhD thesis. A large red gas giant exoplanet can be seen. It has bands of clouds and a large storm, similar to the Great Red Spot on Jupiter, in its atmosphere. Two small blue moons orbit nearby. The background is the dark of space, but not black alone - there are also faint blue swirls. There are swirly, red, cloud-like features in the foreground at the top and bottom, partially obscuring the rest of the image. The artwork was designed by @sophiecavelldesign and is partially inspired by the works of Hokusai and van Gogh.

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Joe Callingham @astrojoe.bsky.social · 15/11/2024

If you want to know anything about radio signatures of exoplanets, star-planet interactions, or space weather, check out our Nature Astronomy perspective! You can access it (for free) here: rdcu.be/d0bYI

rdcu.be

Radio signatures of star–planet interactions, exoplanets and space weather

Nature Astronomy - The maturation of low-frequency radio astronomy instruments has further opened the magnetic environment of stars to investigation, yielding indications of star–planet...

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Ben Sutlieff @bensutlieff.bsky.social · 14/11/2024

I've seen some discussion re. whether scientists leaving Twitter is bad for science communication reasons. While I do agree that we all have a responsibility to sci-comm/public engagement, we also have the right to choose not to do it in a space that is actively degrading to our personal wellbeing 🔭

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Ben Sutlieff @bensutlieff.bsky.social · 14/11/2024

It seems that my partner & I picked a good time to take a short holiday to be outside + avoid endlessly doomscrolling. But it’s so nice to come back and see how much the community here has grown! I wasn't a big Tweeter, but it’s good to see so many familiar faces here now (from astronomy & beyond)

The picturesque harbour in the village of Riomaggiore, Italy. There are many colourful, pastel-coloured houses built into the hillside and a few small boats floating in the harbour. It is shortly after sunset and the sky is blue, and everything is bathed in an orange glow from the fading light.

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Ben Sutlieff @bensutlieff.bsky.social · 22/05/2024

New paper day! Excited to get this one out there - with thanks to my amazing coauthors! 🪐🔭

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Sophia Vaughan @sophiavaughan.bsky.social · 29/01/2024

So you want to measure the atmosphere of Proxima b? A🧵on how to do this with HARMONI@ELT in the next decade. You can also check out my paper showing these results 🔭 🪐: arxiv.org/abs/2401.09589 Or this summary phys.org/news/2024-01... 1/N

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Johanna Vos @johannavos.bsky.social · 23/01/2024

🚨🚨 PhD Position in Extrasolar Atmospheres 🚨🚨 I'm looking for a PhD student to join my group at Trinity College Dublin to investigate weather on imaged worlds beyond our solar system ⚡☁️🪐 ⏰ Deadline: Feb 20th 📝 Job Ad: tinyurl.com/2jfycpfx Please share widely!

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