Suri Rukdee
@suri-rukdee.bsky.social
Astro-instrumentalist, space optics, exoplaneteer, EXO2, DEI initiative
Reposted by Suri Rukdee
Rocky Worlds Status Report 2 Dec 2025
astrobiology.com/2025/12/rock... #astrobiology #Exoplanet #JWST #Hubble
astrobiology.com/2025/12/rock... #astrobiology #Exoplanet #JWST #Hubble
Rocky Worlds Status Report 2 Dec 2025 - Astrobiology
The Rocky Worlds Director’s Discretionary Time (DDT) Program is a joint James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) Program.
astrobiology.com
December 14, 2025 at 6:15 PM
Rocky Worlds Status Report 2 Dec 2025
astrobiology.com/2025/12/rock... #astrobiology #Exoplanet #JWST #Hubble
astrobiology.com/2025/12/rock... #astrobiology #Exoplanet #JWST #Hubble
Reposted by Suri Rukdee
✨ Exoplanet Atmospheres 2026 registration & abstract submission are officially open! Join us in Denver (16-20 March 2026) for an unforgettable AAS Topical Conference Series!
👉 Abstracts due 19 December: aas.org/meetings/exo...
👉 Early registration ends 13 January:
aas.org/meetings/exo...
👉 Abstracts due 19 December: aas.org/meetings/exo...
👉 Early registration ends 13 January:
aas.org/meetings/exo...
November 19, 2025 at 4:29 PM
✨ Exoplanet Atmospheres 2026 registration & abstract submission are officially open! Join us in Denver (16-20 March 2026) for an unforgettable AAS Topical Conference Series!
👉 Abstracts due 19 December: aas.org/meetings/exo...
👉 Early registration ends 13 January:
aas.org/meetings/exo...
👉 Abstracts due 19 December: aas.org/meetings/exo...
👉 Early registration ends 13 January:
aas.org/meetings/exo...
Reposted by Suri Rukdee
Our special November issue, celebrating 30 years of exoplanets, is now here! https://bit.ly/483MH9I
#astronomy #exoplanets
#astronomy #exoplanets
November 18, 2025 at 12:04 PM
Our special November issue, celebrating 30 years of exoplanets, is now here! https://bit.ly/483MH9I
#astronomy #exoplanets
#astronomy #exoplanets
Reposted by Suri Rukdee
How To Spot Life In The Clouds On Other Worlds
astrobiology.com/2025/11/how-... #astrobiology #exoplanet #biosignatures
astrobiology.com/2025/11/how-... #astrobiology #exoplanet #biosignatures
How To Spot Life In The Clouds On Other Worlds - Astrobiology
An exoplanet with dense or even total cloud cover could help astronomers searching for signs of life beyond our planet.
astrobiology.com
November 12, 2025 at 7:50 PM
How To Spot Life In The Clouds On Other Worlds
astrobiology.com/2025/11/how-... #astrobiology #exoplanet #biosignatures
astrobiology.com/2025/11/how-... #astrobiology #exoplanet #biosignatures
Reposted by Suri Rukdee
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 🔭🧪⚒️☄️
October 13, 2025 at 12:27 PM
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 🔭🧪⚒️☄️
Reposted by Suri Rukdee
We’ve got two new papers up on the arxiv trying to understand the “graphite stability region” of exoplanet atmospheres.
TL; DR we were unable to experimentally confirm model predictions of graphite production. We did, however, make organic hazes in these experiments
arxiv.org/abs/2508.05974
TL; DR we were unable to experimentally confirm model predictions of graphite production. We did, however, make organic hazes in these experiments
arxiv.org/abs/2508.05974
Formation of organic hazes in CO$_2$-rich sub-Neptune atmospheres within the graphite-stability regime
Super-Earths and sub-Neptunes are the most common exoplanets, with a "radius valley" suggesting that super-Earths may form by shedding sub-Neptunes' gaseous envelopes. Exoplanets that lie closer to th...
arxiv.org
August 12, 2025 at 3:47 PM
We’ve got two new papers up on the arxiv trying to understand the “graphite stability region” of exoplanet atmospheres.
TL; DR we were unable to experimentally confirm model predictions of graphite production. We did, however, make organic hazes in these experiments
arxiv.org/abs/2508.05974
TL; DR we were unable to experimentally confirm model predictions of graphite production. We did, however, make organic hazes in these experiments
arxiv.org/abs/2508.05974
All the lectures at this year’s Sagan Workshop were so so good!
Want to dive into a grand review of the exoplanet field?
👉 Check out their YouTube channel: www.youtube.com/watch?v=HzCy...
Want to dive into a grand review of the exoplanet field?
👉 Check out their YouTube channel: www.youtube.com/watch?v=HzCy...
What is a sub-Neptune? - BJ Fulton (NExScI)
YouTube video by Sagan Summer Workshop
www.youtube.com
July 26, 2025 at 4:53 PM
All the lectures at this year’s Sagan Workshop were so so good!
Want to dive into a grand review of the exoplanet field?
👉 Check out their YouTube channel: www.youtube.com/watch?v=HzCy...
Want to dive into a grand review of the exoplanet field?
👉 Check out their YouTube channel: www.youtube.com/watch?v=HzCy...
Reposted by Suri Rukdee
The 25th (!) Sagan Summer Workshop is coming to an end. Twenty-five years that have reached thousands of students, produced hundreds of hours of lectures and hands-on activities, and educated multiple generations of exoplaneteers. ❤️🪐
Today I gave my 5th (!) invited Sagan talk, on my fave soapbox 📣:
Today I gave my 5th (!) invited Sagan talk, on my fave soapbox 📣:
July 25, 2025 at 6:58 PM
The 25th (!) Sagan Summer Workshop is coming to an end. Twenty-five years that have reached thousands of students, produced hundreds of hours of lectures and hands-on activities, and educated multiple generations of exoplaneteers. ❤️🪐
Today I gave my 5th (!) invited Sagan talk, on my fave soapbox 📣:
Today I gave my 5th (!) invited Sagan talk, on my fave soapbox 📣:
Reposted by Suri Rukdee
New paper out! This is a review of the published JWST observations of rocky exoplanets so far: arxiv.org/abs/2507.00933
Quick summary of the key points:
Quick summary of the key points:
arxiv.org
July 2, 2025 at 8:34 AM
New paper out! This is a review of the published JWST observations of rocky exoplanets so far: arxiv.org/abs/2507.00933
Quick summary of the key points:
Quick summary of the key points:
Reposted by Suri Rukdee
Rianco-Silva: Titan's visible spectrum contains CH4 lines that are not well characterised, due to the low wavelength cutoff for CH4 line lists.
#AllTheWavelengths
#AllTheWavelengths
June 29, 2025 at 9:07 AM
Rianco-Silva: Titan's visible spectrum contains CH4 lines that are not well characterised, due to the low wavelength cutoff for CH4 line lists.
#AllTheWavelengths
#AllTheWavelengths
Reposted by Suri Rukdee
Wakeford: there is a critical need for high-temperature opacities for sulphur-bearing molecules to interpret UV-Optical exoplanet spectra.
#AllTheWavelengths
#AllTheWavelengths
June 28, 2025 at 8:34 AM
Wakeford: there is a critical need for high-temperature opacities for sulphur-bearing molecules to interpret UV-Optical exoplanet spectra.
#AllTheWavelengths
#AllTheWavelengths
Reposted by Suri Rukdee
International or UK researcher looking for a #fellowship in #astrophysics, #planetaryscience, and/or space instrumentation? Leicester @physicsuol.bsky.social is inviting expressions of interest for this year's STFC 5-year Ernest Rutherford Fellowships (deadline June 26th):
le.ac.uk/physics/rese...
le.ac.uk/physics/rese...
June 2, 2025 at 2:36 PM
International or UK researcher looking for a #fellowship in #astrophysics, #planetaryscience, and/or space instrumentation? Leicester @physicsuol.bsky.social is inviting expressions of interest for this year's STFC 5-year Ernest Rutherford Fellowships (deadline June 26th):
le.ac.uk/physics/rese...
le.ac.uk/physics/rese...
Reposted by Suri Rukdee
Review of methane through space and time, coauthored with @planetdr.bsky.social, is out (OA) in @annualreviews.bsky.social.
Hopefully a helpful resource for community and courses. www.annualreviews.org/content/jour...
Hopefully a helpful resource for community and courses. www.annualreviews.org/content/jour...
June 2, 2025 at 1:17 PM
Review of methane through space and time, coauthored with @planetdr.bsky.social, is out (OA) in @annualreviews.bsky.social.
Hopefully a helpful resource for community and courses. www.annualreviews.org/content/jour...
Hopefully a helpful resource for community and courses. www.annualreviews.org/content/jour...
Reposted by Suri Rukdee
Eyyy my research made Universe Today!
Finding a Better Way to Distinguish Life from Non-Life
The search for life on other worlds needs a way to sift through the chemistry of their atmospheres. If another species observed Earth to search for life, they'd look for
www.universetoday.com
June 1, 2025 at 6:34 PM
Eyyy my research made Universe Today!
Reposted by Suri Rukdee
Ready for the latest K2-18b drama?
Madhusudhan is claiming *even stronger* evidence of DMS after analysing both near-infrared and mid-infrared JWST data. But another study finds no evidence at all.
Read on for a quick update on everyone's f̶a̶v̶o̶u̶r̶i̶t̶e most newsworthy exoplanet. 🧵
#exoplanets 🔭
Madhusudhan is claiming *even stronger* evidence of DMS after analysing both near-infrared and mid-infrared JWST data. But another study finds no evidence at all.
Read on for a quick update on everyone's f̶a̶v̶o̶u̶r̶i̶t̶e most newsworthy exoplanet. 🧵
#exoplanets 🔭
Astronomers double down on claim of strongest evidence for alien life
Are there aliens living on the exoplanet K2-18b? Some astronomers believe they have evidence for molecules on the planet that must have a biological origin, but others disagree
www.newscientist.com
May 20, 2025 at 6:45 PM
Ready for the latest K2-18b drama?
Madhusudhan is claiming *even stronger* evidence of DMS after analysing both near-infrared and mid-infrared JWST data. But another study finds no evidence at all.
Read on for a quick update on everyone's f̶a̶v̶o̶u̶r̶i̶t̶e most newsworthy exoplanet. 🧵
#exoplanets 🔭
Madhusudhan is claiming *even stronger* evidence of DMS after analysing both near-infrared and mid-infrared JWST data. But another study finds no evidence at all.
Read on for a quick update on everyone's f̶a̶v̶o̶u̶r̶i̶t̶e most newsworthy exoplanet. 🧵
#exoplanets 🔭
Reposted by Suri Rukdee
𝗡𝗼, 𝗮 𝗯𝗶𝗼𝘀𝗶𝗴𝗻𝗮𝘁𝘂𝗿𝗲 𝘄𝗮𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗱𝗲𝘁𝗲𝗰𝘁𝗲𝗱 𝗶𝗻 𝗞𝟮-𝟭𝟴𝗯'𝘀 𝗮𝘁𝗺𝗼𝘀𝗽𝗵𝗲𝗿𝗲.
K2-18b is back in the news, now with a bold claim that biosignature molecules (DMS and/or DMDS) have been 'detected at 3σ'.
Most exoplanet astronomers are extremely sceptical about these claims, let's see why (1/n).
🔭🧪🪐 #exoplanet
K2-18b is back in the news, now with a bold claim that biosignature molecules (DMS and/or DMDS) have been 'detected at 3σ'.
Most exoplanet astronomers are extremely sceptical about these claims, let's see why (1/n).
🔭🧪🪐 #exoplanet
April 17, 2025 at 4:08 PM
𝗡𝗼, 𝗮 𝗯𝗶𝗼𝘀𝗶𝗴𝗻𝗮𝘁𝘂𝗿𝗲 𝘄𝗮𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗱𝗲𝘁𝗲𝗰𝘁𝗲𝗱 𝗶𝗻 𝗞𝟮-𝟭𝟴𝗯'𝘀 𝗮𝘁𝗺𝗼𝘀𝗽𝗵𝗲𝗿𝗲.
K2-18b is back in the news, now with a bold claim that biosignature molecules (DMS and/or DMDS) have been 'detected at 3σ'.
Most exoplanet astronomers are extremely sceptical about these claims, let's see why (1/n).
🔭🧪🪐 #exoplanet
K2-18b is back in the news, now with a bold claim that biosignature molecules (DMS and/or DMDS) have been 'detected at 3σ'.
Most exoplanet astronomers are extremely sceptical about these claims, let's see why (1/n).
🔭🧪🪐 #exoplanet
Reposted by Suri Rukdee
An astonishing headline reporting on new observations from a team led to Nikku Madhusudhan claims they’ve found ‘hints of life’ on a planet orbiting a dwarf star some 124 light years away. What’s going on? (1/n) www.bbc.co.uk/news/article... 🔭 🧪
Promising hints of life found on distant planet K2-18b
Scientists find new but tentative evidence that a faraway world orbiting another star may be home to life.
www.bbc.co.uk
April 17, 2025 at 3:24 AM
An astonishing headline reporting on new observations from a team led to Nikku Madhusudhan claims they’ve found ‘hints of life’ on a planet orbiting a dwarf star some 124 light years away. What’s going on? (1/n) www.bbc.co.uk/news/article... 🔭 🧪
Reposted by Suri Rukdee
Also out today, in a masterpiece of timing, this work (not yet reviewed) arguing K2-18b is most likely a mini Neptune or magma world rather than an ocean planet. HT @astrochara.bsky.social
arxiv.org/abs/2504.12030
arxiv.org/abs/2504.12030
Planetary albedo is limited by the above-cloud atmosphere: Implications for sub-Neptune climate
Energy limits that delineate the `habitable zone' for exoplanets depend on a given exoplanet's net planetary albedo (or `Bond albedo'). We here demonstrate that the planetary albedo of an observed exo...
arxiv.org
April 17, 2025 at 5:30 AM
Also out today, in a masterpiece of timing, this work (not yet reviewed) arguing K2-18b is most likely a mini Neptune or magma world rather than an ocean planet. HT @astrochara.bsky.social
arxiv.org/abs/2504.12030
arxiv.org/abs/2504.12030
Reposted by Suri Rukdee
The James Webb Space Telescope may have detected life-associated gas in the atmosphere of a far-off planet. The news is being greeted with both enthusiasm and skepticism.
Is this a hint of life on another world, or just a lot of hot air?
The James Webb Space Telescope may have detected life-associated gas in the atmosphere of a far-off planet. The news is being greeted with both enthusiasm and skepticism.
www.npr.org
April 16, 2025 at 11:22 PM
The James Webb Space Telescope may have detected life-associated gas in the atmosphere of a far-off planet. The news is being greeted with both enthusiasm and skepticism.
Reposted by Suri Rukdee
"I think this is one of those situations where extraordinary claims require extraordinary evidence": Laura Kreidberg
@mpi-astro.bsky.social about signs of life beyond our #solarsystem.
npr.org/2025/04/16/n... #exoplanets #K218b @npr.org @lkreidberg.bsky.social
@mpi-astro.bsky.social about signs of life beyond our #solarsystem.
npr.org/2025/04/16/n... #exoplanets #K218b @npr.org @lkreidberg.bsky.social
Is this a hint of life on another world, or just a lot of hot air?
The James Webb Space Telescope may have detected life-associated gas in the atmosphere of a far-off planet. The news is being greeted with both enthusiasm and skepticism.
npr.org
April 17, 2025 at 6:03 AM
"I think this is one of those situations where extraordinary claims require extraordinary evidence": Laura Kreidberg
@mpi-astro.bsky.social about signs of life beyond our #solarsystem.
npr.org/2025/04/16/n... #exoplanets #K218b @npr.org @lkreidberg.bsky.social
@mpi-astro.bsky.social about signs of life beyond our #solarsystem.
npr.org/2025/04/16/n... #exoplanets #K218b @npr.org @lkreidberg.bsky.social
Reposted by Suri Rukdee
Satellites are currently single use. When they run low on fuel, experience a failure, or become outdated, they are discarded.
Truly sustainable spaceflight will require a circular economy in orbit.
A big technological challenge? Yes.
Sci-fi? Not for much longer.
www.esa.int/ESA_Multimed...
Truly sustainable spaceflight will require a circular economy in orbit.
A big technological challenge? Yes.
Sci-fi? Not for much longer.
www.esa.int/ESA_Multimed...
How to build a circular economy in space
Infographic: How to build a circular economy in space
www.esa.int
April 17, 2025 at 10:20 AM
Satellites are currently single use. When they run low on fuel, experience a failure, or become outdated, they are discarded.
Truly sustainable spaceflight will require a circular economy in orbit.
A big technological challenge? Yes.
Sci-fi? Not for much longer.
www.esa.int/ESA_Multimed...
Truly sustainable spaceflight will require a circular economy in orbit.
A big technological challenge? Yes.
Sci-fi? Not for much longer.
www.esa.int/ESA_Multimed...
Reposted by Suri Rukdee
Detectability Of Oxygen Fugacity Regimes In The Magma Ocean World 55 Cancri e At High Spectral Resolution
astrobiology.com/2025/03/dete... #astrobiology #exoplanet #astrogeology
astrobiology.com/2025/03/dete... #astrobiology #exoplanet #astrogeology
Detectability Of Oxygen Fugacity Regimes In The Magma Ocean World 55 Cancri e At High Spectral Resolution - Astrobiology
Ultra-short Period exoplanets (USPs) like 55 Cnc e, hosting dayside magma oceans, present unique opportunities to study surface-atmosphere interactions.
astrobiology.com
March 27, 2025 at 5:08 PM
Detectability Of Oxygen Fugacity Regimes In The Magma Ocean World 55 Cancri e At High Spectral Resolution
astrobiology.com/2025/03/dete... #astrobiology #exoplanet #astrogeology
astrobiology.com/2025/03/dete... #astrobiology #exoplanet #astrogeology
Reposted by Suri Rukdee
Probing The Limits of Habitability: A Catalog Of Rocky Exoplanets In The Habitable Zone
astrobiology.com/2025/01/prob... #astrobiology #exoplanet #astronomy
astrobiology.com/2025/01/prob... #astrobiology #exoplanet #astronomy
Probing The Limits of Habitability: A Catalog Of Rocky Exoplanets In The Habitable Zone - Astrobiology
Several ground- and space-based searches have increased the number of known exoplanets to nearly 6000. While most are highly unlike our planet, the first rocky worlds in the Habitable Zone (HZ) provid...
astrobiology.com
January 27, 2025 at 5:18 PM
Probing The Limits of Habitability: A Catalog Of Rocky Exoplanets In The Habitable Zone
astrobiology.com/2025/01/prob... #astrobiology #exoplanet #astronomy
astrobiology.com/2025/01/prob... #astrobiology #exoplanet #astronomy