Johanna Teske
@johannateske.bsky.social
620 followers 350 following 180 posts
She/her/hers. Astronomer, runner, feminist, vegan, Nats fan, Peloton fan.
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johannateske.bsky.social
Very interesting work!
gijsmulders.com
How do giant planets influence the type of #exoplanets that form in the habitable zone?

A thread 1/🧵
Many Exoplanets
Reposted by Johanna Teske
shastingssimon.bsky.social
My number one tip for researchers that do a significant amount of non peer reviewed paper publication/outreach:

Create an excel table, every time you give an interview, talk, write an oped or white paper, etc. take 5 seconds to immediately note it in the excel.
Reposted by Johanna Teske
kojamf.bsky.social
Dr. Jane Goodall filmed an interview with Netflix in March 2025 that she understood would only be released after her death.
Reposted by Johanna Teske
christinatoms.bsky.social
this is great - we’re not gonna scicomm our way out of this
sciencevs.bsky.social
This moment from our latest episode with science writer @edyong209.bsky.social is 🔥

We asked Ed — how do we talk up the benefits of science in the face of government cuts? He told us that's the wrong approach. 🧪

Listen wherever, or watch on Spotify 👇

open.spotify.com/episode/7Evh...
Reposted by Johanna Teske
mattkenworthy.bsky.social
Cugno and Grant @sierragrant.bsky.social with “A Carbon-rich Disk Surrounding a Planetary-mass Companion” detected using #JWST - an impressive detection of several different carbon molecules that are very promising for #exomoon formation around the directly imaged #exoplanet CT Cha b ☄
An image of the planetary companion CT Cha b shown as a red dot next to its parent star, with a spectrum from 12 to 16 microns from JWST showing several rotational and vibrational bands in emission for several carbon molecules.
Reposted by Johanna Teske
sierragrant.bsky.social
PRESS RELEASE DAY! Could not be prouder of this result and so happy that it's now out!!! 🤩✨

Thanks to the team at @stsci.edu for the wonderful write-up and image!
stsci.edu
#NASAWebb has found the first direct evidence of potential moon formation around a giant exoplanet. The discovery is shedding light on how such systems evolve and why moons could be potentially habitable worlds: https://bit.ly/46xGodN 🔭 🧪
An illustration of a young planet with a surrounding disk of dust and gas potentially forming moons. The planet, which appears dark red, is shown at lower right, circled by a cloudy, clumpy reddish orange-colored disk. The host star appears at upper left, and glows yellow, with its own reddish disk of debris. The disk that surrounds the planet takes up about half the illustration. The black background of space is speckled with stars. At the bottom of the illustration, graphics of molecules are listed in the following order: Acetylene, Carbon Dioxide, Ethane, Benzene, Hydrogen cyanide. The words Artist’s Concept appear at upper right.
johannateske.bsky.social
Yay @sierragrant.bsky.social and team! 👏🏻👏🏻👏🏻
stsci.edu
#NASAWebb has found the first direct evidence of potential moon formation around a giant exoplanet. The discovery is shedding light on how such systems evolve and why moons could be potentially habitable worlds: https://bit.ly/46xGodN 🔭 🧪
An illustration of a young planet with a surrounding disk of dust and gas potentially forming moons. The planet, which appears dark red, is shown at lower right, circled by a cloudy, clumpy reddish orange-colored disk. The host star appears at upper left, and glows yellow, with its own reddish disk of debris. The disk that surrounds the planet takes up about half the illustration. The black background of space is speckled with stars. At the bottom of the illustration, graphics of molecules are listed in the following order: Acetylene, Carbon Dioxide, Ethane, Benzene, Hydrogen cyanide. The words Artist’s Concept appear at upper right.
Reposted by Johanna Teske
jjfplanet.bsky.social
I'm really excited about this one! It's fantastic working with Dr. Yayaati Chachan:
arxiv.org/abs/2509.20428
"Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets"
Lots of great nuggets her, including that even super-Jupiters are very metal-rich.
Revising the Giant Planet Mass-Metallicity Relation: Deciphering the Formation Sequence of Giant Planets
The rate at which giant planets accumulate solids and gas is a critical component of planet formation models, yet it is extremely challenging to predict from first principles. Characterizing the heavy...
arxiv.org
Reposted by Johanna Teske
evertnasedkin.bsky.social
There's a lot to unpack from the paper; the main takeaway is that we're starting to really see these objects in 3D! In the future, we want to really look at how the atmosphere itself evolves over time, rather than just looking at the rotational modulation - this would really be the weather!
A poster entitled the weather report from SIMP-0136, summarizing the findings of the the paper "The JWST weather report: Retrieving temperature variations, auroral heating, and static cloud coverage on SIMP-0136".
Reposted by Johanna Teske
evertnasedkin.bsky.social
🔭 It's paper day! Today I'm sharing the latest in a series of papers looking at the weather on other worlds, in this case bringing you the weather report from a nearby T-dwarf, SIMP-0136. 🪐

🧵 to follow...
Reposted by Johanna Teske
carnegiescience.bsky.social
TOMORROW: Two talks, one big night of discovery!

Join Earth & Planets Laboratory postdocs Sierra Grant & Shubham Kanodia as they reveal how planets are born—and the giants that defy the rules. #NeighborhoodLecture

📅 Sept 25 | 6:30 PM ET | DC & Online
🔗 RSVP: carnegiescience.edu/birth-worlds...
Birth of Worlds, Rise of Giants
Join Carnegie postdocs Shubham Kanodia and Sierra Grant as they explore the secrets of distant worlds—from the birth of new planets to giant rule-breakers that defy expectations—in a special double…
carnegiescience.edu
Reposted by Johanna Teske
elisecutts.bsky.social
Cecilia Payne-Gaposchkin ✨ figured out what stars are made of ✨ when she was just 25. 🔭🧪

Her PhD thesis basically established the Harvard astro department — at a time when Harvard didn't officially allow woman students.

I wrote this little profile to mark the 100th anniversary of her thesis:
Reposted by Johanna Teske
erikanesvold.com
Some late commentary on the claim that we (the U.S.) need to send a nuclear reactor to “claim” a spot on the Moon before China does: NASA needs a better argument to convince me it’s worth it. And I would have thought I’d be easy to convince! open.substack.com/pub/makingne...
The Missing Argument for the Lunar Space Race
Why does America need to get there first?
open.substack.com
johannateske.bsky.social
Yesssss congratulations! Lucky them and the rest of us in the DMV 🥳
Reposted by Johanna Teske
nplinnspace.bsky.social
We *absolutely* should celebrate it. Do your part by enjoying the 200+ page masterpiece in its entirety on ADS! ui.adsabs.harvard.edu/abs/1925PhDT... 🔭

Special shoutout to Figure 2, an incredible piece of art that I want on my wall (and suspect could even make an excellent tattoo if executed well?)
Figure caption:

Figure 2. The hydrogen atom. The ten innermost orbits possible for the single electron of the atom of hydrogen are diagrammatically represented. All possible quantum transitions are included as follows: — short dashes, Lyman series, terminating at a 1-quantum orbit; full lines, Balmer series, terminating at a 2-quantum orbit; long dashes, Paschen series, terminating at a 3-quantum orbit. Transfers are only possible between orbits with azimuthal quantum numbers differing by ±1.
johannateske.bsky.social
👏🏻👏🏻👏🏻
tadkomacek.bsky.social
Really enjoying Dr. Shreyas Vissapragada's @carnegiescience.bsky.social seminar on three population-level surveys of atmospheric escape @oxoplanets.bsky.social!
Reposted by Johanna Teske
miquai.bsky.social
The best part of my job is the people I get to work with 🪐💙
Three planeteers look through a mockup of a Curiosity rover wheel