Gaurav

Glad to be part of this work featuring our new exoplanet atmosphere modeling framework, SANSAR, applied to HD 209458 b.
Check it out below 👇
#exoplanet 🔭🪐

@bot.astronomy.blue signup

The K2-18b Video You've Been Waiting For YouTube video by Cool Worlds

The K2-18 Video You've Been Waiting For

youtu.be/zjDUG1_jfXU?...

The Challenges of Detecting Gases in Exoplanet Atmospheres Claims of detections of gases in exoplanet atmospheres often rely on comparisons between models including and excluding specific chemical species. However, the space of molecular combinations availabl...

A new, thorough reanalysis of the data that led to claims of biosignatures on K2-18b from @luiswel.bsky.social & friends - a nicely written lesson on why this stuff is hard. They find no significant evidence for DMS, the gas the Cambridge team claimed to have found. arxiv.org/abs/2504.21788

Nice to see this research note on K2-18b from @astrojake.bsky.social, which demonstrates that a flat line (i.e. no spectral features) is a good fit to the MIRI data.

#exoplanet 🪐 🔭

arxiv.org/abs/2504.15916

Artist's impression of the exoplanet K2-18b. Credit: A. Smith, University of Cambridge.

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

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.

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... 🔭 🧪

I've been using Termius for ssh on my iPad, and it works really well for me. Have you tried it?

NASA’s Webb Images Young, Giant Exoplanets, Detects Carbon Dioxide - NASA Science NASA’s James Webb Space Telescope has captured direct images of multiple gas giant planets within an iconic planetary system. HR 8799, a young system 130

Nothing to see here. Just JWST 🔭 IMAGING A PLANETARY SYSTEM AROUND ANOTHER STAR. Look at the different planet colors! Go NASA science!!! science.nasa.gov/missions/web...

New sunlight beats old sunlight!
www.theguardian.com/world/2025/j...

Hey bluesky! Do you want to develop your own open-source software in Python? Apply to attend Code/Astro!

Website: semaphorep.github.io/codeastro/
Scroll all the way down for the application link. :) Apps are due Feb 1! (1/2)

I made a new gif for a new site tracking JWST observations of exoplanets (still a work in progress): jlothringer.github.io/Dashboard.html

What an exciting ~3 years it has been! ✨🔭✨

🚨 SPECIAL FIRST POST 🚨
Applications to @exoclimes.bsky.social (7-11 July, 2025 at @umontreal.ca) is now OPEN until Jan 24, 2025! Join us for a week of exciting talks on planetary atmospheres interspersed with ample opportunities to discuss and forge new collaborations! forms.gle/mpeZ3LXGoFb9...

Text reading: "In an impressive field of competitors, six teams distinguished themselves: 1st Place: Kohki Horie (PhD student) and Yamato Arai (Master's student) from the University of Tokyo (Team c-number + daiwakun) 2nd Place: Jeroen Cottaar, Data Scientist at ASML (Team Jeroen Cottaar) 3rd Place: Vincent Debout and Sébastien Goulet from CS Group (Team Space Coder) 4th Place: Shlomo Ron (Team greySnow) 5th Place: Team Youri + Pascal 6th Place: Dmitrii Rudenko from LMU Munich (T eam Through the Thorns to the Star)"

Ariel Data Challenge 2024 logo

The winners of the Ariel Data Challenge 2024 have been officially announced!

After a fierce 3 months, 6 winners emerged from 1400+ participants from 75 countries - HUGE congratulations to all the winners!

For the full announcement, see the front page & press releases page here: arielmission.space

Probabilistic weather forecasting with machine learning - Nature GenCast, a probabilistic weather model using artificial intelligence for weather forecasting, has greater skill and speed than the top operational medium-range weather forecast in the world and provid...

So excited to share our Google DeepMind team's new Nature paper on GenCast, an ML-based probabilistic weather forecasting model: www.nature.com/articles/s41...

It represents a substantial step forward in how we predict weather and assess the risk of extreme events. 🌪️🧵

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

The Pale Blue Dot: Using the Planetary Spectrum Generator to Simulate Signals from Hyper Realistic Exo-Earths - Astrobiology The atmospheres and surfaces of planets show tremendous amount of spatial variation, which has a direct effect on the spectrum of the object

The Pale Blue Dot: Using the Planetary Spectrum Generator to Simulate Signals from Hyper Realistic Exo-Earths
astrobiology.com/2024/11/the-... #astrobiology #astrogeology #exoplanet #astronomy

TIDYE-1b Is The Youngest Transiting Planet Yet Discovered - Astrobiology Researchers have made an exciting discovery of a 3-million-year-old planet, TIDYE-1b – on a human scale, the equivalent in age to a two-week-old baby.

TIDYE-1b Is The Youngest Transiting Planet Yet Discovered
astrobiology.com/2024/11/tidy... #astrobiology #astronomy #exoplanet

Thanks

Post a non-religious photo you think of as holy.

Hi! I'd like to join.

found a fun kids book