Planetary scientists and geologists dedicated to understanding planetary surfaces and developing new instruments/techniques for mineral and chemistry analysis
Pasadena, CA
Joined January 2018
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Ehlmann Research Group, Caltech retweeted
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
🚀🌙 @NASA’s Lunar Trailblazer mission is ready to live up to its name!
The small satellite is riding along on @Int_Machines’ IM-2 launch, part of NASA’s CLPS initiative, which is slated to launch no earlier than Feb. 26.
🧵Check out this thread to learn more about the mission!
ALT NASA’s Lunar Trailblazer approaches the Moon as it enters its science orbit in this artist’s concept. The small satellite will orbit about 60 miles (100 kilometers) above the lunar surface, producing the best-yet maps of water on the Moon. Credit: Lockheed Martin Space
Ehlmann Research Group, Caltech retweeted
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 👇
A 2Gyr History of Water-Alteration in Terra Sirenum, Mars: Volcanism's Influence on Al Clay Formation and Chemically Distinct Waters Forming Sulfates and Chlorides Into the Amazonian. buff.ly/4eBWXs7 Thick deposits with Al clays thin with distance from Arsia Mons.
Ehlmann Research Group, Caltech retweeted
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
Variable Iron Mineralogy and Redox Conditions Recorded in Ancient Rocks Measured by In Situ Visible/Near-Infrared Spectroscopy at Jezero Crater, Mars. buff.ly/4gAAOM7 Strata at the fan front saw stronger oxidative water‐ rock interactions vs the upper fan & crater floor.
Ehlmann Research Group, Caltech retweeted
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
Characterizing Hydrated Sulfates and Altered Phases in Jezero Crater Fan and Floor Geologic Units With SHERLOC on Mars 2020. buff.ly/4em8JXi Hydrated Ca‐sulfates are found only in the upper fan.
Ehlmann Research Group, Caltech retweeted
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)
ALT This figure is composed of two large panels. On the left, there are eight spectra of abraded surfaces of rocks seen on the crater floor and in the delta of Jezero Crater. On the right are images of fifteen of those abraded patches, with footprints showing where the spectral measurements were taken.
Ehlmann Research Group, Caltech retweeted
Last week, thank you to all the folks who came to my @Caltech #WatsonLecture to hear about our @LunarTrailblazr mission and especially the @caltechipac, @PCCLancer, and @EhlmannLab members who ran outreach activities! Talk is here for your viewing youtu.be/XGNNxd_o98s
There's less than a week until Bethany Ehlmann's #WatsonLecture, which will introduce attendees to the @LunarTrailblazr mission!
Reserve your seat for free today: caltech.edu/campus-life-even…
Not local? Watch the recorded Watson Lectures here: youtube.com/playlist?list=PL…
ALT Flyer featuring Professor Bethany Ehlmann who sits for a portrait on the right of the piece; to the left the following words: The Watson Lectures logo Lunar Trailblazer: The Pioneering Small Satellite Set to Investigate Water on the Moon featuring Bethany Ehlmann, Professor of Planetary Science, Allen V. C. Davis and Lenabelle Davis Leadership Chair and Director, Keck Institute for Space Studies Wednesday, January 31, 2024 7:30 p.m. PT at Beckman Auditorium Visit caltech.edu/watson
Ehlmann Research Group, Caltech retweeted
Cool new views of Mars! Astronaut-eye view, courtesy of the Mars Odyssey orbiter and my good friend and fellow @BrownGeoSci alum Laura Kerber
What would Mars look like from a future orbiting astronaut's POV?
The Odyssey orbiter captured its first images of the Red Planet’s curving horizon and layers of atmosphere, similar to the @Space_Station’s view of Earth. More on these new images: go.nasa.gov/3GinHhC
Ehlmann Research Group, Caltech retweeted
Weird rocks that occur only or mostly on Earth! @caltech and @EhlmannLab alum @elisecutts delves into why Earth's geology is special in her new @NatGeo piece
nationalgeographic.com/scien…
Ehlmann Research Group, Caltech retweeted
New @EhlmannLab pub from alum Dr. Nathan Stein: so many large, geologically young Na carbonate deposits on Ceres. How/why were they emplaced so recently? Rayleigh-Taylor instabilities and diapirs, perhaps? Mystery over to you, planetary geophysicists :) doi.org/10.1029/2023JE007868
Ehlmann Research Group, Caltech retweeted
Via @Caltech's WAVE program, @kenziemm21. Thanks for sending great students like Kenzie our way, @WUSTL_EPS 😊
Summer student @kenziemm21 is measuring samples in the glovebox with the ASD spectrometer!
ALT A woman is sitting in a chair with her arms elbow deep in a glovebox
Ehlmann Research Group, Caltech retweeted
Cool article by @EhlmannLab ugrad alum and now sci writer @elisecutts
“We have a 150-year-old puzzle that has been unsolved until now,” says Sergei Lebedev @EarthSciCam.
eos.org/articles/the-mysteri…
Ehlmann Research Group, Caltech retweeted
Thanks, @Caltech Ge157c, for an awesome field trip to Mojave Natl Preserve this weekend, groundtruthing our class remote sensing labs!
Ehlmann Research Group, Caltech retweeted
News alert, *very cool, beautiful* product: Thanks to @ErroneousTholus', a new seamless mosaic of Mars at 5m/px. Thanks to @NASA's Research & Analysis PDART for funding Caltech to make this easy/free to the world! For your science or Mars-flying pleasure
tinyurl.com/marsmos
Ehlmann Research Group, Caltech retweeted
It's here! 5.7 trillion pixels of Mars from the amazing CTX camera in your web browser, or available for download. Everything you need is here: murray-lab.caltech.edu/CTX/. The whole planet in one image at high-resolution.
News alert, *very cool, beautiful* product: Thanks to @ErroneousTholus', a new seamless mosaic of Mars at 5m/px. Thanks to @NASA's Research & Analysis PDART for funding Caltech to make this easy/free to the world! For your science or Mars-flying pleasure
tinyurl.com/marsmos
Ehlmann Research Group, Caltech retweeted
Ask me about lunar regolith and water ice mixtures (abstract 2578) tonight at poster location 107 at 7:30-8:30pm #LPSC2023
ALT Poster with title: Laboratory Reflectance Study of Water-Ice-Regolith Mixtures for Modeling of Lunar Water Scenarios
Ehlmann Research Group, Caltech retweeted
The @EhlmannLab works on new EMIT imaging spectrometer data from Earth and now you can too
EMIT has launched an open science portal that makes it easier than ever to access and use the mission's data!
Explore the portal, called VISIONS, to see what observations EMIT has made and where it will be observing in coming weeks: go.nasa.gov/3y44Rqo
Ehlmann Research Group, Caltech retweeted
And @Caltech release on @EhlmannLab alum @EvaLScheller's Science paper on water alteration and organics in the Jezero crater volcanic floor rocks sampled by @NASAPersevere rover is now live. Let's bring these samples back! #MarsSampleReturn #SamplingMars
caltech.edu/about/news/rock-…
Newest paper just hit @Science: science.org/doi/10.1126/scie…
We use Raman and luminescence spectroscopy with @SHERLOC2020 on the @NASAPersevere for the first time on a #Planet to find cool minerals and signatures consistent with organics on @NASAMars. Want to learn more? 1/n
Ehlmann Research Group, Caltech retweeted
New piece from @JoelAchenbach that explains the 3 papers on @NASAPersevere Jezero crater floor results that came out today washingtonpost.com/technolog…
Ehlmann Research Group, Caltech retweeted
Students in Planetary Sci: two great summer internship programs 🛰👩🚀🔬🔍 More @LPItoday
Lunar exploration prep: lpi.usra.edu/exploration_int…
Planetary science: lpi.usra.edu/lpiintern
Ehlmann Research Group, Caltech retweeted
Woot-woot! 🎉 Congrats to volcanologist and newly minted Dr. Joana Voigt @VoigtJoana on her successful Ph.D. defense! It's been fun to host you here in my @EhlmannLab group at Caltech for the past year, and I look forward to collaborations to come.
