COST Action PLANETS @costactionplanets.bsky.social Welcome to @COSTprogramme.bsky.social Action CA22133 PLANETS! We are an interdisciplinary network of scientists working to uncover how planets form and evolve.
Join: https://costactionplanets.github.io/
Insta: @cost_planets
Youtube: @costactionplanets
Alexandre Branco @alxmbb.bsky.social 🇵🇹 • PhD candidate in astronomy researching exoplanet atmospheres at U.Porto, Institute of Astrophysics 🌏🔭
Helen Albert @helen-albert.bsky.social Freelance journalist. Focus: medicine, life sciences, bioanthropology, environment & biotech. Bylines: Inside Precision Medicine, C&EN, BioWorld, BMJ, New Scientist, Chemistry World, Labiotech, Forbes & more.
David W Hogg @hogg.bsky.social Astronomer, physicist, statistician, data analyst, open scientist. (Totally not at all the other David Hogg). I live on Lenape land.
Dr Ryan MacDonald @distantworlds.space Lecturer in Extrasolar Planets 🪐 🔭 at the University of St Andrews 🏴
Bhavesh Rajpoot @bhaveshrajpoot.bsky.social Aspiring Exoplanet Astronomer. Radial Velocities and Direct Imaging. Pre-doc @ MPIA and Universität Heidelberg. Grad Admissions Mentor.
Toby Rodel 🏳️🌈🏳️⚧️🦕🦖 @astrotobe.bsky.social (They/Them)
PhD astronomer studying exoplanets at Queen’s University Belfast
Lover of dinosaurs 
NGTS @nextgentransits.bsky.social The Next Generation Transit Survey (NGTS) is an observatory made up of 12 individual 20 cm robotic telescopes in Paranal Chile dedicated to finding exoplanets.
ngtransits.org
Caroline Morley @astrocaroline.bsky.social Astronomer, Associate prof at UT Austin, mother of two small humans
Elisabeth Matthews @elisabethastro.bsky.social Exoplanets, disks, and everything in between 🪐💫
https://ecmatthews.github.io/
she/her
Josh Lothringer @jlothringer.bsky.social Assistant Astronomer at @spacetelescope.bsky.social researching exoplanet and brown dwarf atmospheres. Opinions expressed are my own.
https://jlothringer.github.io/
@paulmolliere.bsky.social @paulmolliere.bsky.social Atmospheric modeling and retrieval group
Max Planck Institute for Astronomy
Duncan Christie @astroduncan.bsky.social Astrophysicist. Postdoctoral researcher at the MPIA. Exoplanet atmospheres. (he/him/his)
www.duncanchristie.net
Remco de Kok @planetremco.bsky.social Academic wanderer, all the atmospheres, dad, husband, runner. He/him.
Jayne Birkby @jaynebirkby.bsky.social Professor of Astrophysics at the University of Oxford. I study the atmospheres of other worlds beyond the Solar system.
Mariana Sastre @marianasastre.bsky.social Colombian 🇨🇴 PhD Student at University of Groningen. NL. Working on exoplanetary geophysics and magma ocean evolution🌋
Volcano-lover and photography enthusiast.
Sebastian Zieba @sebizieba.bsky.social Sagan Fellow at the Center for Astrophysics | Harvard & Smithsonian. Working on the characterization of hot transiting exoplanets.
Kevin Stevenson @stevensonanddone.bsky.social Rock climber by day
+ astronomer by night
= never-ending problems
@reinarzyared.bsky.social @reinarzyared.bsky.social 
The Astrosky Ecosystem @astrosky.eco We're building new social media tools for astronomers and astronomy enthusiasts online - from feeds to account hosting.
Website: https://astrosky.eco | GitHub: https://github.com/the-astrosky-ecosystem
Account managed by @emily.space
Luis Welbanks @luiswel.bsky.social 51 Pegasi b & Presidential Postdoctoral Fellow studying the atmospheres of planets outside our Solar System at @SESEASU -> Assistant Professor @SESEASU 2025
Previously @NASA Sagan Fellow. @Gates_Cambridge
scholar at @Cambridge_Uni.
Matt Nixon @nixonmatthew.bsky.social 51 Pegasi b Fellow at Arizona State University and jazz enthusiast
Lisa Đặng @astrolisadang.bsky.social Exoplanet Postdoc at @umontreal.ca | #firstgen high-school to PhD | Fr/En/Việt | incoming prof at @uofwaterloo.bsky.social
@platomissioncon.bsky.social @platomissioncon.bsky.social 
Dr Joanna Barstow @drjovian.bsky.social STFC Ernest Rutherford Fellow at the Open University. Astromum x 2. FRAS. Christian, singer, bookworm, musical theatre super fan.
Mark Marley @markmarley.bsky.social Personal account. Substellar science since the 80s.
Til Birnstiel @birnstiel.bsky.social Professor for Astrophysics at LMU Munich. www.til-birnstiel.de
David R. Rice @davidrrice.bsky.social Astrophysicist and rock-enjoyer. Slartibartfast's apprentice. Postdoc Fellow at UW-Madison. PhD from UNLV. Northwestern University Alumni.
Rocky Worlds Meetings @rockyworlds.bsky.social Monthly online seminars on all topics related to rocky planets & #exoplanets from chemistry to geology to astrophysics ☄️🧪🔭🪐🌍🌟
Sign up & more info: https://rockyworlds.org
Watch previous talks: https://www.youtube.com/@rockyworlds
ExoClimesVII @exoclimes.bsky.social Official account for #ExoclimesVII on July 7-11th 2025 in Montréal, Canada! The ExoSLAM summer school aimed at early career researchers will take place July 3-5
Naiara Barrado Izagirre @naierromo.bsky.social Física
Astrónoma
Planetóloga
Bailo como hobby
C₈H₁₀N₄O₂
John Bird @johnbird001.bsky.social Ph.D. atmospheric scientist🌎, nuclear engineer☢, 📰 #antarctica
South Pole Station 🐧 http://amzn.to/2klpv3b 🐧
David Trevascus @dtcupcakes.bsky.social Astrophysics PhD student at MPIA Heidelberg 🇩🇪
Studying the formation of planets via direct imaging 🪐
he/they 🏳️🌈
Hypatia Catalog @hypatiacatalog.bsky.social I was born in 2010, became legit in 2014 (Hinkel et al.), and blossomed into an interactive database in 2017. Now I'm the largest catalog of stellar elemental abundances for stars with and without planets near the Sun. I like purple.
hypatiacatalog.com
Dr Thea Kozakis @theakozakis.bsky.social I love habitable planets, especially the one I live on! she/her
Yoni Brande @yonibrande.bsky.social phd astrologer, world class barista, and professional chef
Evie Ahrer @eahrer.bsky.social Exoplanet Atmospheres 🪐🪐
Austrian, junior research group leader at MPIA Heidelberg
evamariaa.github.io
Kamber Schwarz @theschwarz.bsky.social Astrophysicist, Asst. Prof. @ University of Georgia starting Fall 2026, she/her, kamberschwarz.com
Views are my own
Ilaria Pascucci @pascucci.bsky.social Astrophysicist and Planetary Scientist. Professor at the University of Arizona. Fellow, American Astronomical Society. Outdoor enthusiast with a love for hiking, biking, and dogs.
Laura Kreidberg @lkreidberg.bsky.social Exoplanets, atmospheres, aliens. Director of the APEx Department at the Max Planck Institute for Astronomy.
IAU Office of Astronomy for Education @astro4edu.bsky.social The Office of Astronomy for Education (OAE) of the International Astronomical Union, hosted at @hausderastronomie.bsky.social
https://haus-der-astronomie.de/de/impressum
Dr Jake Taylor @astrojake.bsky.social Astrophysicist at the University of Oxford. Researching the atmospheres of exoplanets.
Jwst Feed @jwstfeed.bsky.social James Webb - Everything That's Hot 🔥
jwstfeed.com
💀Adina Feinstein PhD 💀 @afeinstein20.bsky.social asst prof | astronomy PhD | MSU | https://adina.feinste.in
Linn Boldt-Christmas @nplinnspace.bsky.social 🇸🇪🚀🇪🇺 Astrophysicist in exoplanet science & space policy research 🪐🔭 Also: astrobiology, telescopes, climate, equality/EDI, and scicomm ✨ (she/her) – linnboldtchristmas.wordpress.com
Royal Astronomical Society @royalastrosoc.bsky.social www.ras.ac.uk
ASCL (Astrophysics Source Code Library) @asclnet.bsky.social Making astrophysics research source codes discoverable since 1999
editor@ascl.net
A. Suárez Mascareño @asuarezmascareno.com Hunting low mass exoplanets.
Paul McMillan @mcmillan-astro.bsky.social Astrophysicist working on Milky Way dynamics and Gaia data. University of Leicester. Views expressed are my own.
Website: https://paulmcmillan-astro.github.io/
AAS Nova @aasnova.org Highlighting recent astronomy research from the American Astronomical Society's journals. Editors: Kerry Hensley & Susanna Kohler. Discover what's new in the universe at aasnova.org. Header image: https://bit.ly/4vPAvD
Haus der Astronomie @hausderastronomie.bsky.social Zentrum für astronomische Bildungs- und Öffentlichkeitsarbeit in Heidelberg | Center for Astronomy Education and Outreach in Heidelberg, Germany. Posts in erster Linie auf Deutsch but also in English
https://www.haus-der-astronomie.de/de/impressum
NSF–DOE Rubin Observatory @vrubinobs.bsky.social Get ready for a new era in astronomy and astrophysics with Rubin Observatory!
Para español siga a Instagram: http://instagram.com/rubin_observatory
Matthew Kenworthy @mattkenworthy.bsky.social Professor of astronomy working at Leiden Observatory in the Netherlands on the direct imaging of extrasolar planets and transits of giant ring systems || Opinions my own || Will tell Dad jokes for cash. https://kenworthy.space/
Dr Becky Smethurst @drbecky.bsky.social Astrophysicist studying how supermassive black holes affect galaxies (s/h). I get overly enthusiastic about space (and cats) on YouTube: http://www.youtube.com/drbecky
Markus Pössel @mpoessel.de Astronomy and relativity outreach (Tweets in German & English) | personal account | he/his | managing scientist @hausderastronomie.bsky.social | director @astro4edu.bsky.social |outreach @mpi-astro.bsky.social | Seestar enthusiast
Astrobites @astrobites.bsky.social Digestible summaries of the latest astronomy research. Written by an international team of grad students for undergrads! Supported by the @AAS_Office. #scicomm
Dr. Jessie Christiansen @aussiastronomer.bsky.social Caltech/IPAC Planet Hunter | Chief Scientist, NASA Exoplanet Science Institute | @TEDFellow | Science consultant | SHERA PI | My views are not the views of NASA | She/her
Shashank Dholakia @astroshashank.bsky.social Astrophysics PhD at University of Queensland | UC Berkeley '21 | Exoplanets and Stars | @astrosoundbites.bsky.social co-host | Astrophotographer
shashankdholakia.github.io
Max-Planck-Institut für Astronomie @mpi-astro.bsky.social Astronomical research institute in Heidelberg, Germany / Astronomisches Forschungsinstitut in Heidelberg
Impressum: https://www.mpia.de/impressum
Hannah Wakeford @stellarplanet.bsky.social Exoplanet scientist. Science communicator. Author. Podcaster. Miniature painter. Wife. Cat mum.
Beatriz Campos Estrada, PhD @exobeatriz.bsky.social Exoplanet scientist 🪐 Postdoc at the APEx Department at the Max Planck Institute for Astronomy✨️
Intersectional feminist 🌹she/her
🇵🇹🇬🇧🇩🇰🇦🇹🇩🇪
Ross Church @rpc25.bsky.social Astrophysical researcher and teacher based at Lund University, Sweden, working on stars and stellar clusters. Also hiking, cooking, Wikipedia. 🌈, he/him.
Rebecca Forsberg @rebeccaforsberg.bsky.social ✍️ Deputy Editor of @popularastronomi.se – Sweden's largest magazine for astronomy and space
🔭 PhD in astronomy & astrophysics
✨ Previously scicomm at @eso.org and @scilifelab.se
🏃♀️ Runner, biker and big fan of camping
Emily Hunt @emily.space Postdoc @univie.ac.at working on star clusters & machine learning.
Also: open web developer & enthusiast, working on @astrosky.eco and more
🏳️🌈 🏳️⚧️ (she/her), Ⓥ
Website: https://emily.space
GitHub: https://github.com/emilyhunt