Alexandria Johnson

Planetary cloud microphysics | she/her | child tamer, cat snuggler, plant whisperer, typo master | Assistant Prof @PurdueEAPS | @johnsoncloudlab

[Alexandria Johnson @avblanch]

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)

[Johnson Cloud Lab @johnsoncloudlab]

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 🧵

[Ben K. D. Pearce @AstroBio_Ben]

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!
https://t.co/JeYL5RcwAC

[OOIR @ObserveIR]

Trending in #Astronomy:
https://t.co/mBuG9n8BAr

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

[༺ 𐂂 ༻ @touchmoonflower]

A bright and shining example of the suicidal absurdity of technocapitalist society occurs every year at this time, all across the country.
1/n

[Alexandria Johnson @avblanch]

@AhrensScience @JonesKuma Came to say the same thing 😂

[Alexandria Johnson @avblanch]

@drdre4000 Love it!

[Alexandria Johnson @avblanch]

@stellerarts @PurdueEAPS Thank you! 🥰 It was such a fun costume to make!!

[Alexandria Johnson @avblanch]

Teaching on Halloween? You know what that means! Time to make yet another atmospheric thermodynamics related costume 👀

[Alexandria Johnson @avblanch]

Purdue is in here too!!

[Alexandria Johnson @avblanch]

@NolanFossum I have no doubt it was a great talk! 🤩

[Alexandria Johnson @avblanch]

@That_Astro_Chic Thank you @That_Astro_Chic 🥰

[Nature Astronomy @NatureAstronomy]

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.: https://t.co/LpItQe1OSv

[Brown University @BrownUniversity]

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. https://t.co/9YcdUZrIs0

[Brown DEEPS @Brown_DEEPS]

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

[Purdue EAPS @PurdueEAPS]

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 https://t.co/0ogqRgUDHj

[Alexandria Johnson @avblanch]

@urban_tom @elonmusk @X I feel this in my bones.

[Alexandria Johnson @avblanch]

@urban_tom @PurdueEAPS Thank you! Random it popped up now but I will take it 😂 Nice AGU picture!!

[Alexandria Johnson @avblanch]

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.

[Alexandria Johnson @avblanch]

@stellerarts @That_Astro_Chic @PurdueEAPS Thank you @stellerarts 💕

[Alexandria Johnson @avblanch]

@johannabrown @That_Astro_Chic @PurdueEAPS Thank you @johannabrown!! 🥹