iiinova — where your digital self keeps evolving

Mariana Sastre @marianasastre.bsky.social · 21/09/2026

The ✨second✨ paper of my PhD is on arXiv, this time I worked on theoretical predictions for 🌋Hell of a Survey 🌋. It seems that future observations of S2 can tell us more about the geophysical state of rocky exoplanets ! Looking forward to compare with the current JWST observations !

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Forming Worlds Lab @formingworlds.space · 24/08/2026

Earlier this summer, Mariana Sastre (@marianasastre.bsky.social) posted her first paper as lead author 🌋 "Geophysical and atmospheric implications of fO2-dependent melting on rocky exoplanets" Read the paper: arxiv.org/abs/2606.20249 #Exoplanets #PlanetaryScience

Line plot of pressure against temperature showing where mantle rock begins and finishes melting, for five oxidation states from four log units below the iron-wüstite buffer to four above. Solid lines mark the solidus and dashed lines the liquidus. The curves fan out across the plot: the most reduced case, in dark blue, melts several hundred kelvin hotter at any given pressure than the most oxidised case, in dark pink.

Portrait of Mariana Sastre, smiling, against a plain background.

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Forming Worlds Lab @formingworlds.space · 31/07/2026

New paper from Lorenzo Cesario 🔭 His third first-author paper, and he only finished his MSc this year. "Characterizing the oxidation state of rocky exoplanets with the Large Interferometer for Exoplanets (LIFE)" Read the paper: arxiv.org/abs/2607.28121 #Exoplanets #PlanetaryScience

Six panels of mid-infrared emission spectra from 6 to 16 microns, one per mantle oxidation state. A red line marks the true model spectrum, blue bands the one, two and three sigma retrieved ranges, grey the simulated instrument noise. The three reduced cases on the top row are smooth, sloping curves with few features; the three oxidised cases below carve deep, sharp absorption bands.

Portrait of Lorenzo Cesario, smiling, wearing a light blue shirt against a plain wall.

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Mariana Sastre @marianasastre.bsky.social · 16/07/2026

Go and check out the latest paper of Lorenzo Cesario, a recently graduated master student in our group who led an amazing research about reduced planets ✨inflating✨ before shrinking, which I found pretty cool 😎 🌋

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Forming Worlds Lab @formingworlds.space · 03/07/2026

That's a wrap on #Exoplanets6 in Porto 🇵🇹 The Forming Worlds Lab brought four posters, all using our open PROTEUS model to link a rocky world's interior (magma ocean, redox, outgassing, escape) to what JWST can observe. Featuring @marianasastre.bsky.social, @nichollsh.bsky.social & team 👇

Emma Postolec, Imre Kisvárdai, Mariana Sastre and Harrison Nicholls of the Forming Worlds Lab stand smiling in front of a large orange exo6 sculpture outside the Alfândega do Porto, venue of the Exoplanets 6 conference.

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Mariana Sastre @marianasastre.bsky.social · 19/06/2026

My first✨ first-author ✨paper is accepted and on arXiv 🎉🪐 We show a hierarchy of controls on magma oceans: volatile inventory is the primary regulator, while redox-dependent melting curves matter mainly in volatile-poor planets, affecting interior+atmosphere. 🔗Link: arxiv.org/abs/2606.20249

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Mariana Sastre @marianasastre.bsky.social · 28/04/2026

✨ We’re convening a session at #EPSC2026 🌋🪐 We welcome contributions on outreach, training & DEI-focused initiatives supporting underrepresented communities 😀 🗓️ Abstract deadline 13th May 🔗 meetingorganizer.copernicus.org/EPSC2026/ses... @marattia.bsky.social @europlanetmedia.bsky.social

meetingorganizer.copernicus.org

Session ODAC10

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Mariana Sastre @marianasastre.bsky.social · 22/01/2026

Poster discussions at #RockyWorlds4 has been amazing! Coffee breaks are on 🔥🔥🔥Super creative posters with incredible science, I think we are improving as a community to communicate our research to other colleagues 🧐 Looking forward for the poster competition ✨ @rockyworlds.bsky.social

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Mariana Sastre @marianasastre.bsky.social · 20/01/2026

✨Auroras✨ over Groningen,NL during the first after-conference day of @rockyworlds.bsky.social This planet is just so incredible! Looking forward for the talks, sessions and activities the rest of the week🌌

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Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · 06/04/2025

Flights over a cauldron of the Earth. Meradalir, Iceland (2022).

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Mariana Sastre @marianasastre.bsky.social · 28/10/2025

Another reason to keep writing code in Python 🫶 A round of applause to those who stand up against social injustice in this times where academia does not talk too much about it…

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Tim Lichtenberg @timlichtenberg.bsky.social · 13/10/2025

w/ Oli Shorttle, @johannateske.bsky.social & Eliza Kempton we reviewed our current understanding and prospects for peaking on the inside of small #exoplanets in "Constraining exoplanet interiors using observations of their atmospheres": www.science.org/stoken/autho... & arxiv.org/abs/2510.08844 🔭🧪⚒️☄️

Illustration of predicted interior structures of sub-Neptune exoplanets. Observed density and atmospheric constraints are interpreted in three scenarios, each with a gaseous envelope. Water worlds have a small metal core, rocky mantle, high-pressure ice layer, and possible liquid water ocean. Gas dwarfs have a larger metal core and a magma ocean. Global supercritical regimes have no clear boundaries between layers. Image credit: Mark A. Garlick.

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Caltech IPAC @caltechipac.bsky.social · 18/09/2025

The official number of exoplanets has surpassed 6,000! And you can access data on all 6,007 of them right here at IPAC 📈 🪐 Watch the video & read all about the center of the exoplanet universe (also known as NExScI!) here: www.ipac.caltech.edu/news/the-nas...

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Harrison Nicholls @nichollsh.bsky.social · 04/07/2025

In our new paper we model the complete evolution of L 98-59 d from 'birth' up to the present day. We show that it cannot be a gas dwarf or a water world; it's a 'hybrid' planet with an H2-rich atmosphere containing H2S and SO2 (photochemistry!), and a deep magma ocean. @timlichtenberg.bsky.social

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Mariana Sastre @marianasastre.bsky.social · 26/06/2025

Hola Astro/Geo/Photo/Documentary- BlueSky community! This is my first post soooo: I’m Mariana, I’m a 2nd year PhD Student researching the geophysical evolution of Magma Ocean Exoplanets! I’m in love with volcanoes of this and other planets 🌋👑🌍

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