Planetary cloud microphysics | she/her | child tamer, cat snuggler, plant whisperer, typo master | Assistant Prof @PurdueEAPS | @johnsoncloudlab
Indiana
Joined June 2008
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What planets do we study? #Earth & #Mars are some of our favs, but the @JohnsonCloudLab has expanded to include small astronomical bodies like #Titan + our #Moon, and #Exoplanets. If there is an atmosphere we want to use #CloudMicrophsics to explore it! (📸: Martin Vargic)
Alexandria Johnson retweeted
ICYMI: Purdue University is now a host site for the 51 Pegasi b Postdoctoral Fellowship! 17 faculty mentors from @PurdueEAPS & @PurduePhysAstro pursuing amazing research in planetary astronomy - myself included for planetary atmos inclined - have been identified. More info in 🧵
Alexandria Johnson retweeted
The 51 Pegasi b Fellowship applications have opened for 2025, and Purdue is a new host institution!
If you are a final-year PhD or 1st- or 2nd-year postdoc interested in origins of life, prebiotic chemistry, or the search for life, my lab might be a fit!
bit.ly/40Mr1Mq
Alexandria Johnson retweeted
Trending in #Astronomy:
ooir.org/index.php?field=Phy…
1) Evidence for heavy-seed origin of early supermassive black holes from a z ≈ 10 X-ray quasar (@NatureAstronomy)
2) Change is needed to diversify space science — and it starts with a name (@NatureAstronomy)
3) Venus’s atmospheric nitrogen explained by ancient plate tectonics (@NatureAstronomy)
4) Detection of the infrared aurora at Uranus with Keck-NIRSPEC (@NatureAstronomy)
5) JWST Reveals Excess Cool Water near the Snow Line in Compact Disks, Consistent with Pebble Drift
Teaching on Halloween? You know what that means! Time to make yet another atmospheric thermodynamics related costume 👀
Prof. Frizzle and Liz we’re spotted @PurdueEAPS today! Even ordered a little ❄️❄️❄️ to celebrate.
Alexandria Johnson retweeted
Nitrogen is only ~3% of the atmosphere of Venus, but it holds clues to its past: the abundance can be explained only if there was a period of active tectonics, which lasted >1 Gyr before transitioning into the current stagnant lid. @PlanetaryGeodyn et al.: nature.com/articles/s41550-0…
Alexandria Johnson retweeted
Simulations produced by a Brown-led research team suggest the scorching hot and barren planet Venus may have once had tectonic plate movements similar to those believed to have occurred on early Earth. brnw.ch/21wDTBd
Alexandria Johnson retweeted
An exciting new study led by DEEPS researchers explores the connection between Venus's current atmosphere and surface pressure, shedding light on ancient plate tectonics.
@NatureAstronomy @alexjayevans @Dan_E_Ibarra @avblanch
Simulations produced by a Brown-led research team suggest the scorching hot and barren planet Venus may have once had tectonic plate movements similar to those believed to have occurred on early Earth. brnw.ch/21wDTBd
Alexandria Johnson retweeted
Scientists make the case that the Venus may have had plate tectonics making it more hospitable to life. Dr. Alexandria Johnson, of @PurdueEAPS, is part of the research team discussed in this @nytimes article. @avblanch #thenextgiantleap bit.ly/3scUGjZ
This coffee shop is playing hits from the late 90’s / early 00’s and I have some serious questions…. Like… Where have I been storing ALL THESE LYRICS in my brain?!
If there is one thing growing older has taught me, it's that you will never regret spending time with the elders who are near and dear to you. You just never know when that time won't be there anymore.
Whatever you do in life, make sure you have someone who will drop everything at a moments notice to be your sounding board on any and every topic. Very thankful to have such a person tonight 💕
Alexandria Johnson retweeted
Carnegie Postdoctoral Fellows Available!! Apply here apply.interfolio.com/130441 Astronomy, cosmo/geochemistry, data science, petrology, geobiology, geophysics, mineral physics, planetary science, seismology, and volcanology. Deadline Nov 13 @CarnegiePlanets @theAGU @SEDI_AGU
What an outpour of love 🥰 Thank you everyone!!
Been sitting on this news for a hot second, but as of today your girl is a **tenure track** Assistant Professor @PurdueEAPS!
Beyond excited to continue our exploration of clouds in planetary atmos & so very grateful for the support network that never stopped cheering me on.
Been sitting on this news for a hot second, but as of today your girl is a **tenure track** Assistant Professor @PurdueEAPS!
Beyond excited to continue our exploration of clouds in planetary atmos & so very grateful for the support network that never stopped cheering me on.