Ehlmann Research Group, Caltech

Planetary scientists and geologists dedicated to understanding planetary surfaces and developing new instruments/techniques for mineral and chemistry analysis

[Bethany Ehlmann @bethanyehlmann]

Launch window for @LunarTrailblazr opens today! 🚀🌚 Immensely proud of our team and looking forward to getting underway to map water on the Moon. Launching along with IM-2/SpaceX, separating ~48min after launch. @NASA coverage starts 6:30pm ET #PI_daily

[Ehlmann Research Group, Caltech @EhlmannLab]

Thesis title: “Location, Location, Location: Insights from Spatially-Resolved Microbial Habitation and Activity Patterns in Seep Carbonates at Santa Monica Basin, CA" (and a chapter on microimaging spectroscopy of carbonaceous chondrites)

[Ehlmann Research Group, Caltech @EhlmannLab]

Congratulations to Dr. Sergio Parra on a successful PhD defense!

(Advisors, and pictured below with Serg: @bethanyehlmann and @OrphanANME)

[Bethany Ehlmann @bethanyehlmann]

Congrats to @Caltech @EhlmannLab alum Dr. Ellen Leask on her important findings for Mars history: sulfates connected with basin volcanoes, large ash deposits, late history saline waters -- Terra Sirenum holds an amazing record of Mars climate! Check out the paper 👇

[Bethany Ehlmann @bethanyehlmann]

Former @Caltech @EhlmannLab postdoc Lucia Mandon traces more oxidized minerals in part of the Jezero crater delta relative to the floor or later rocks seen by @NASAPersevere in the upper delta

[Bethany Ehlmann @bethanyehlmann]

New paper from @Caltech @EhlmannLab grad student Yu Yu Phua et al shows the hydration state of sulfates in Mars rocks seen by @NASAPersevere. More dehydrated than @MarsCuriosity rocks (weird), and phases found indicate salty fluids for at least some of the waters in Jezero crater

[Ehlmann Research Group, Caltech @EhlmannLab]

@Kampstronaut Welcome! We're thrilled to have you!

[Planetary Plot of the Week @PlanetaryPlots]

This week, we have a plot demonstrating the spectral diversity of the rocks that the Perseverance rover has encountered in Jezero Crater. These spectra show variable iron mineralogy which indicates strong oxidative water-rock interactions in the Jezero delta deposits. (1/2)

[Ehlmann Research Group, Caltech @EhlmannLab]

Wednesday morning poster, Oak Kanine: Paleoenvironmental analysis of Jezero Crater, Mars: stratigraphy and structure from rover instruments and orbital data #10thMars

[Ehlmann Research Group, Caltech @EhlmannLab]

We're excited to see many of you on campus @Caltech next week for #10thMars! Here are all the Ehlmann group presentations:

[Ehlmann Research Group, Caltech @EhlmannLab]

Tuesday morning poster, Samantha Baker: Clay mineralogy and stratigraphy in Nili Fossae suggest acidic alteration of transported sedimentary material rather than intensive leaching #10thMars

[Ehlmann Research Group, Caltech @EhlmannLab]

And to get the mosaic, use the NASA PDS or go to the Murray Lab: https://t.co/al5xSasdHO

[Ehlmann Research Group, Caltech @EhlmannLab]

How did @ErroneousTholus and colleagues get 86,000+ images aligned to make a seamless 5m/pix image of Mars? Find out! Paper here:

https://t.co/qIcPOQHhuH

@bethanyehlmann @theAGU

[Ehlmann Research Group, Caltech @EhlmannLab]

New @EhlmannLab paper by @AndrewAnnex showing how lavas on Jezero crater's floor followed topography set by sediments formed under earlier episodes of Lake Jezero - important for interpreting rover data.

https://t.co/n1Ihfr87tD

[Ehlmann Research Group, Caltech @EhlmannLab]

Valeria Kachmar (poster, Tuesday): Spectral analyses of Ceres' surface water ice deposits help to constrain their emplacement processes #LPSC2024

[Ehlmann Research Group, Caltech @EhlmannLab]

Part of our group is headed to #LPSC2024 next week! Here's a thread of Ehlmann lab presentations. We hope to see many of you there!

[Ehlmann Research Group, Caltech @EhlmannLab]

.@bethanyehlmann (talk, Tuesday 4:40 pm, Waterway 4): As Mars Sample Return is reworked, it is important to keep the scientific return that led to its prioritization by the Decedal Survey intact #LPSC2024