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Ed Rivera-Valentín

@planettreky.bsky.social
1.7K followers 575 following 351 posts

Planetary Scientist & Trekker of Planets. #LatinxInSTEM 🇵🇷 #LGBTQinSTEM 🏳️‍🌈. My posts, my views.

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Ed Rivera-Valentín @planettreky.bsky.social · 11/06/2026
New paper alert! Empirical Evaluation of S-band Radar Polarimetric Response to Surface Rock Abundance across the Lunar Highlands and Maria iopscience.iop.org/article/10.3...
iopscience.iop.org
Empirical Evaluation of S-band Radar Polarimetric Response to Surface Rock Abundance across the Lunar Highlands and Maria
Empirical Evaluation of S-band Radar Polarimetric Response to Surface Rock Abundance across the Lunar Highlands and Maria, Rivera-Valentín, Edgard G., Fassett, Caleb I., Virkki, Anne K., Pérez-Cortés, Santa L., Powell, Tyler, Hickson, Dylan C., Nolan, Michael C., Patterson, G. Wesley
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Benjamin Gill @sedgeochem.bsky.social · 27/05/2026
Yep... I seriously don't have words...
eos.org
NSF Eliminates Geoscience Postdocs - Eos
The National Science Foundation (NSF) has eliminated its postdoctoral fellowship funding for Earth scientists.
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Kat Volk @katvolk.bsky.social · 16/01/2026
Looks like the nasa AGs are no more science.nasa.gov/planetary-sc...
science.nasa.gov
Letter from the NASA Planetary Science Director: the Future of the Planetary Science Analysis and Assessment Groups (AGs) - NASA Science
A Letter from the NASA Planetary Science Director, Dr. Louise M. Prockter: the Future of the Planetary Science Analysis and Assessment Groups (AGs)
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Alejandro Soto @soto.space · 11/01/2026
Here is an interesting perspective on how planetary exploration has historically responded, good and bad, to budget challenges. Written by @cyberlyra.bsky.social whose research is partially about how NASA teams work successfully on missions. #planetsci 🧪 www.science.org/doi/10.1126/...
science.org
Weathering budget cuts: Lessons from NASA
The current uncertainty and cuts to science funding affect universities, research facilities, and laboratories across the United States, but this situation is not unprecedented. Under pressure to fund...
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Ed Rivera-Valentín @planettreky.bsky.social · 21/11/2025
Open position: Scientific Editor for The Planetary Science Journal Note that this is a paid position via a stipend. As a current PSJ editor, I’d be happy to answer questions. aas.org/jobregister/...
aas.org
Scientific Editor for The Planetary Science Journal | American Astronomical Society
Established in 2020, the American Astronomical Society’s (AAS) Planetary Science Journal (PSJ) has grown to one of the most impactful journals focused on planetary science in the world. To continue th...
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Space.com @space.com · 31/10/2025
#nasa is shuttering the Goddard #space #flight center in a move that may not be entirely legal, according to critics. For months, our #staff #writer @joshdinner.bsky.social interviewed NASA #employees, read #senate reports and more to give you the deepest dive yet. www.space.com/space-explor...
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Gene J. Mikulka @genejm1017.bsky.social · 10/09/2025
NASA has a proposal to re-commission the OSIRIS-REx spacecraft for the exact purpose. It's healthy, & up for a 2029 mission—total cost $200 Million, $50 Million already spent. President Trump wants to kill it. Here's more on the OSIRIS-APEX mission - osirisrex.arizona.edu/osiris-apex
osirisrex.arizona.edu
OSIRIS-APEX
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⭐ ᗰᗩᖇᛕ ᗩ. ǤᗩᖇᒪIᑕᛕ ⭐ @markgarlick.com · 03/09/2025
NASA released some shape models of four of Saturn's moons. These have every lump and bump; they're not simple spheres. Here's a test render I did in #Blender showing #Mimas in false color - red is high, blue low. Clearly shows how non-spherical it is! #sciart #spaceart 1/2
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Gene J. Mikulka @genejm1017.bsky.social · 09/09/2025
For those who wish to listen to the 10 September #NASA Mars 2020 Rover Perseverance announcement, here's the #YouTube Link www.youtube.com/watch?v=-StZ...
youtube.com
Details of New Perseverance Mars Rover Finding
YouTube video by NASA Video
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NPR @npr.org · 04/09/2025
A federal judge in Boston said she found it "difficult to conclude anything other than that [the Trump administration] used antisemitism as a smokescreen for a targeted, ideologically-motivated assault on this country's premier universities, and did so in a way that runs afoul of [federal law]."
n.pr
Trump administration illegally froze billions in Harvard funds, judge rules
The ruling is a legal victory for Harvard but the White House says it will appeal the decision.
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Sarah Hörst @planetdr.bsky.social · 03/09/2025
Just reupping this. Idk if we are way behind on positions compared to normal because of *waves hands at everything* or bc I’m not on twitter anymore. I’ve shared it all the same places I normally do.
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altNOAA 🇺🇸 @altnoaa.bsky.social · 01/09/2025
In order to get a weather forecasting job with the National Weather Service, applicants now have to name at least two Trump Executive Orders and state how they plan to help support them. Which is ridiculous and shame on every MIC that allows that nonsense in their WFO!
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Ed Rivera-Valentín @planettreky.bsky.social · 17/08/2025
NASA’s PDCO Planetary Defenders #PlanetaryScience youtu.be/jOb2DQWvDvc?...
youtu.be
Planetary Defenders (NASA+ Original Documentary)
YouTube video by NASA
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Casey Dreier @caseydreier.bsky.social · 07/08/2025
This is a shocking executive order that undermines the very idea of open inquiry. It turns federal grants into dispensations, subject to arbitrary and capricious withdrawal should the recipient say or believe the wrong things. www.whitehouse.gov/presidential...
whitehouse.gov
Improving Oversight of Federal Grantmaking
By the authority vested in me as President by the Constitution and the laws of the United States of America, and to improve the process of Federal
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Ed Rivera-Valentín @planettreky.bsky.social · 07/08/2025
New executive order IMPROVING OVERSIGHT OF FEDERAL GRANTMAKING www.whitehouse.gov/presidential...
whitehouse.gov
Improving Oversight of Federal Grantmaking
By the authority vested in me as President by the Constitution and the laws of the United States of America, and to improve the process of Federal
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Chris Morran @themorrancave.bsky.social · 25/07/2025
“I was threatened with being referred to the FBI... They also threatened to stain my record so I would never get a job again. They also threatened with an extended detention if I didn’t give them the passwords to the student information or to my district files."
wmtw.com
Vermont school superintendent detained after trip to Nicaragua
Wilmer Chavarria, the superintendent of the Winooski School District, was held by U.S. Customs and Border Protection while returning to the country after visiting family.
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Sarah Tuttle @niais.cryptoanarchy.network · 25/06/2025
NASA is being radically reorganized, starting almost immediately. The Town Hall is here, if you're interested: video.ibm.com/channel/KKpg...
video.ibm.com
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The Planetary Society @planetarysociety.bsky.social · 10/06/2025
Need data to explain the disastrous proposed cuts to NASA? Here are seven charts that lay out why The White House’s FY2026 budget proposal poses a historic threat to NASA. www.planetary.org/articles/nas...
planetary.org
NASA's disastrous 2026 budget proposal in seven charts
The White House has put forward a radical, wasteful proposal for NASA. We have the data to prove it.
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James Tuttle Keane @jtuttlekeane.bsky.social · 06/06/2025
Happy pride month! I worked with some LA-based scientists and engineers, and we have a kickstarter for space pride t-shirts! Consider backing! 🛰️🏳️‍⚧️🚀🏳️‍🌈🪐 www.kickstarter.com/projects/spa...
A sketch of a colorful Mars rover holding an inclusive pride flag in its robot arm. It’s very stylized, colorful, and got a little smile. It’s on a starry background.A sketch of our Solar System, drom Mercury to Pluto. The planets are colored with the colors of an inclusive pride flag. It’s on a starry background. Above the planets is the text “Enough Space for Everyone”
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NASAWATCH @nasawatch.bsky.social · 31/05/2025
This is the #RIF that NASA can expect to endure - a reduction from 17,391 to 11,853 - so ... who will the unlucky 5,538 people be? Meanwhile let's gut the #NASA budget while simultaneously starting a crash program to beat China to #Mars - #EmbraceTheChallenge y'all
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NASAWATCH @nasawatch.bsky.social · 30/05/2025
What is the fastest way to make China Great In Space? Simple: just do this one thing to the #NASA budget. #Slash
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Paul Voosen @voosen.me · 30/05/2025
Breaking from @science.org: The Trump administration wants to kill off a host of active and healthy NASA climate and planetary spacecraft. It would be a "leaner, more focused" agency, they say -- and one far less capable of studying the Earth and exploring space.
science.org
Dozens of active and planned NASA spacecraft killed in Trump budget request
Proposal would end nearly all new major science missions
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Ed Rivera-Valentín @planettreky.bsky.social · 31/05/2025
GBO, which was trying to build the nextgen radar after the collapse of Arecibo, is on the decommissioning block… again. Sigh.
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Leigh Fletcher @leighfletcher.bsky.social · 30/05/2025
ESA folks finding zeroes for ExoMars, EnVision, Euclid, LISA, Ariel contributions, and so many more in those documents... the damage to international partnerships and trust would be incalculable if this budget proposal comes to pass...
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Andy Rivkin @asrivkin.bsky.social · 30/05/2025
"Gemini telescopes will operate at approximately 50% capacity and access to the telescopes at Kitt Peak and Cerro Tololo will be phased out." p 104 of the pdf.
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The Planetary Society @planetarysociety.bsky.social · 30/05/2025
BREAKING: The president's budget request just hit Congress, which could usher in a dark age for NASA space science. Congress has the final say, but you can help shape the outcome by adding your name to our global petition. This is just the start of our fight. Sign the petition: planet.ly/petition
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Lynn Carter @lynncarter.bsky.social · 31/05/2025
Wow. This proposes cutting over 1300 civil servants from NASA Goddard, a 46% cut in staff.
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Heidi B. Hammel @hbhammel.bsky.social · 30/05/2025
Witness the *proposed* devastation of NASA science. If this concerns you, consider exploring the tools provided to make your opinions known: www.planetary.org/save-nasa-sc...
planetary.org
Save NASA Science - Action Hub
NASA science faces record cuts. Take action to stop it—we'll show you how.
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James Tuttle Keane @jtuttlekeane.bsky.social · 30/05/2025
The NASA planetary science fleet chart if the president’s budget is enacted.
The NASA planetary science fleet chart. It shows two spirals with missions to Moon/Mars and the Solar System. I’ve crossed off all of the missions that will be cancelled in the president’s budget… and there are a lot of them.
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James Tuttle Keane @jtuttlekeane.bsky.social · 30/05/2025
🤯 This table is devastating but so important. Government funded science supports everyone from kids, to college students, to researchers.
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Sarah Hörst @planetdr.bsky.social · 30/05/2025
The Presidents Budget Request for NASA is out. It’s a bloodbath Canceled are DAVINCI, VERITAS, Juno, OSIRIS-APEX, US participation in ExoMars and EnVision… Huge cut to R&A. No funding to begin development of the Uranus Orbiter. If you’ve ever cared about NASA, time to contact congress.
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Britt Lundgren @brittlundgren.bsky.social · 27/05/2025
This regime's fixation on proving the "knowledge-class" was wrong about COVID is bizarre. These folks were asked to modify their lifestyle in reasonable ways to protect vulnerable people from a deadly virus & they were so offended by the notion that they are still furious about it. SMH
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David Malakoff @davidmalakoff.bsky.social · 13/05/2025
Another scoop from Jeff Mervis (@policyhound.bsky.social): NSF's ~1400 grant terminations have disproportionately affected PIs from groups underrepresented in science: women, racial & ethnic minorities, & those with disabilities. 1/3 www.science.org/content/arti...
science.org
Trump officials take steps toward a radically different NSF
Efforts to shrink staff, budget, and focus have alarmed members of Congress
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News Breaking LIVE @newsbreakinglive.bsky.social · 09/05/2025
BREAKING NEWS: President Trump's administration confirms it is looking to end the constitutional right to due process, allowing them to lock up whoever they want for no reason open.substack.com/pub/newsbrea...
open.substack.com
BREAKING: Trump Admin Confirms It Is Looking To End Due Process
President Trump’s administration is seriously looking at suspending the right to due process in court, habeas corpus, according to top Trump aide Stephen Miller.
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Ed Rivera-Valentín @planettreky.bsky.social · 09/05/2025
NSF faces radical shake-up as officials abolish its 37 divisions www.science.org/content/arti...
science.org
Exclusive: NSF faces radical shake-up as officials abolish its 37 divisions
Changes seen as a response to presidential directives on what research to fund
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Ed Rivera-Valentín @planettreky.bsky.social · 02/05/2025
Exclusive: NSF stops awarding new grants and funding existing ones www.nature.com/articles/d41...
nature.com
Exclusive: NSF stops awarding new grants and funding existing ones
US science funder also plans to screen grant applications for compliance with ‘agency priorities’.
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Johns Hopkins APL @jhuapl.bsky.social · 25/04/2025
NASA’s #DragonflyMission, set to explore Saturn’s moon Titan, has passed its Critical Design Review. Led by APL and supported by U.S. industry, government and academic partners, Dragonfly is ready for the next phase and will launch in 2028. jhuapl.link/6a3
jhuapl.link
Dragonfly Mission Passes Critical Design Review
The Johns Hopkins APL-led team working on the first rotorcraft designed for scientific exploration on another ocean world has passed its Critical Design Review, a major milestone confirming Dragonfly’...
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NASAaarrr @nasaaarr.bsky.social · 24/04/2025
ROSES 2025 is now 69 days late. And counting.
A background of ROSES with the overlaid text "April 24, 2025   69 Days Late" and the pirate NASA logo (NASA meatball with 2 crossed swords instead of the swoosh)
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Jeremy Berg @jeremymberg.bsky.social · 24/04/2025
ATTENTION: NSF GRANT RECIPIENTS We received a heads up from a trusted source that you should proactively download/print/screen shot any documentation on research.gov pertaining to your NSF awards, both those that are current and any that have closed in the last 5-6 years. 1/n
media.tenor.com
a cartoon of a man holding a frying pan and a spoon with red alert written above him
ALT: a cartoon of a man holding a frying pan and a spoon with red alert written above him
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Ed Rivera-Valentín @planettreky.bsky.social · 21/04/2025
NASA’s Lucy Spacecraft Images Asteroid Donaldjohanson 😍😍😍😍😍😍😍 science.nasa.gov/image-articl...
science.nasa.gov
NASA’s Lucy Spacecraft Images Asteroid Donaldjohanson - NASA Science
In its second asteroid encounter, NASA’s Lucy spacecraft obtained a close look at a uniquely shaped fragment of an asteroid that formed about 150 million
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Alexandra Witze @alexwitze.bsky.social · 17/04/2025
While I was trying to wrangle reports of signs of life beyond Earth, @dangaristo.bsky.social was reporting on how ALL NEW RESEARCH GRANTS ARE BEING FROZEN AT THE NSF 🧪 www.nature.com/articles/d41...
nature.com
Exclusive: Trump team freezes new NSF awards — and could soon axe hundreds of grants
The National Science Foundation is the latest US agency to be disrupted by Elon Musk’s DOGE.
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David Rankin @asteroiddave.bsky.social · 16/04/2025
The new NASA documentary "Planetary Defenders" premieres here in about 1 hour. Live stream already started. Don't miss out! 🔭🧪🔥 www.youtube.com/watch?v=jOb2...
youtube.com
Planetary Defenders (NASA+ Original)
YouTube video by NASA
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Ed Rivera-Valentín @planettreky.bsky.social · 16/04/2025
Puerto Rico goes completely dark after another island-wide power outage www.nbcnews.com/news/us-news...
nbcnews.com
Puerto Rico goes completely dark after another island-wide power outage
The outage hits just months after the island suffered a dayslong blackout that began on New Year's Eve.
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Astrobites @astrobites.bsky.social · 15/04/2025
From Skylar Grayson/Cole Meldorf/Abby Lee/Drew Lapeer/Catherine Slaughter: NASA is facing severe budget cuts that would cancel missions ready for launch, put tens of thousands out of jobs, and set science back decades. We need your help to ask Congress to prevent this! astrobites.org/2025/04/15/h...
astrobites.org
NASA Needs Your Help!
NASA is facing severe budget cuts that would cancel missions ready to be launched, put tens of thousands out of a job, and set science back decades. We need your help to ask congress to prevent these ...
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Carl T. Bergstrom @carlbergstrom.com · 16/04/2025
They are further consolidating control over the priorities of federal science funding.
science.org
NSF scraps most outside advisory panels
Science agency will no longer get the community’s advice on programs ranging from biology to international activities
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Phil Plait @philplait.bsky.social · 16/04/2025
Assuming NASA can fund this work, of course.
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Ed Rivera-Valentín @planettreky.bsky.social · 11/04/2025
White House budget proposal eviscerates science funding at NASA arstechnica.com/space/2025/0...
arstechnica.com
Trump White House budget proposal eviscerates science funding at NASA
“This would decimate American leadership in space.”…
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Pedro León 🌍☄️ @pedroleon.info · 08/04/2025
👩‍🚀 La NASA ha BORRADO por completo de su web los comics 'La primera mujer. Una promesa de la NASA para la humanidad' en inglés y español. Por supuesto, ya los tenía archivados en la web de InfoSondas y los puedes descargar y leer desde aquí www.infosondas.com?s=primera+mu...
infosondas.com
InfoSondas
Documentos sobre Sondas Espaciales y Astronáutica
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George Takei @georgetakei.bsky.social · 07/04/2025
A reminder that if the government can send migrants to a prison camp without any due process, it can send U.S. citizens there, too. I know because this happened to me and my family in 1942.
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Ed Rivera-Valentín @planettreky.bsky.social · 04/04/2025
NASA cut $420 million for climate science, moon modelling and more www.newscientist.com/article/2474...
newscientist.com
NASA cut $420 million for climate science, moon modelling and more
Under pressure from Elon Musk’s DOGE task force, NASA is cancelling grants and contracts for everything from lunar dust research to educational programmes
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