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Greg Dubos

@astroptere.bsky.social

1.2K followers 460 following 1.2K posts

🇫🇷🇺🇸 Systems Engineer, PhD at NASAJPL in Los Angeles. Flight Director and Systems Lead on EuropaClipper spacecraft. Activity Lead, Avionics and Systems chair on Mars Perseverance rover. GeorgiaTech & SUPAERO alumnus. Français-US

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Greg Dubos @astroptere.bsky.social · Nov 16

Only a month ago we were launching the Europa Clipper spacecraft! I can’t believe it’s already on its way and that some key instrument deployments have already been performed! I want to thank everyone who has contributed to this project, whether you are still at JPL or not. This is your success.

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Greg Dubos @astroptere.bsky.social · 9h

Solar conjunction for our Europa spacecraft is now over! While we did not uplink commands for about 10 days, we were getting some telemetry confirming yhr health of the vehicle. The team is now back in the driver seat! To check out the current location of Clipper:

eyes.nasa.gov/apps/solar-s...

Eyes on the Solar System - NASA/JPL

Explore the 3D world of the Solar System. Learn about past and future missions.

eyes.nasa.gov

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Greg Dubos @astroptere.bsky.social · Aug 8

Rest in Peace Jim Lovell. 😢
I remember an exciting talk he gave about his Apollo 13 experience at Georgia Tech, which was truly inspirational.
www.cbsnews.com/news/jim-lov...

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Greg Dubos @astroptere.bsky.social · Aug 4

Another cool result from the #Clipper flyby of #Mars, with this infrared image of the Red Planet with its two moons, Phobos, and Deimos!

Un autre résultat intéressant du survol de Mars par notre sonde Europa Clipper, avec un cliché infrarouge de la planète et ses deux lunes, Phobos et Deimos!

Europa Clipper Captures Mars, Phobos, and Deimos

NASAs Europa Clipper captured this infrared image of the heat radiation from Mars and its moons Phobos and Deimos on Feb. 28, 2025.

www.jpl.nasa.gov

Greg Dubos @astroptere.bsky.social · Aug 3

Very exciting to see Clipper’s radar instrument REASON perform well during the Mars flyby a few months ago! Imagine what we’ll learn about #Europa’s subsurface!

Le radar de #Clipper a bien fonctionné lors du survol de Mars il y a quelques mois, prometteur pour l’étude d’Europe!

NASA’s Europa Clipper Radar Instrument Proves Itself at Mars - NASA

The agency’s largest interplanetary probe tested its radar during a Mars flyby. The results include a detailed image and bode well for the mission at

www.nasa.gov

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Reposted by Greg Dubos

Sarah Hörst @planetdr.bsky.social · May 30

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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Greg Dubos @astroptere.bsky.social · May 30

SwRI scientists contribute to uncovering ongoing surface modification on Jupiter’s moon Europa | Southwest Research Institute

Latest data indicate that material from Europa’s subsurface ocean is interacting with charged particles at its surface

www.swri.org

Reposted by Greg Dubos

Dr. Damien P. Williams Wants A Better Sociotechnical Paradigm @wolvendamien.bsky.social · May 20

You have three days, starting today, to leave a public comment with the FDA about, say, why COVID-19 boosters should remain available to everyone and also free. "Individual consumer" is the category you most likely want (unless you are one of the other categories; if so, choose that).

Regulations.gov

www.regulations.gov

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Greg Dubos @astroptere.bsky.social · May 7

www.jpl.nasa.gov/news/dave-ga...

Dave Gallagher Named 11th Director of JPL as Laurie Leshin Steps Down

The change in leadership will take place at the start of June.

www.jpl.nasa.gov

Greg Dubos @astroptere.bsky.social · May 2

Please reach out to your elected officials to ask them to protect NASA’s funding for planetary science, in whatever way you can!

Dr Pamela L Gay @starstryder.space · May 2

save our science www.planetary.org/advocacy-act...

Advocacy Action Center

The Planetary Society is organizing a new space constituency that is educated, empowered, and loud.

www.planetary.org

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Reposted by Greg Dubos

SpacePolicyOnline @spacepolicyonline.bsky.social · Jan 14

Isaacman Wins Support, But Also Criticism from Republicans spacepolicyonline.com/news/isaacma...

Isaacman Wins Support, But Also Criticism from Republicans

Posted: January 14, 2025 4:45 pm ET | Last Updated: January 14, 2025 4:48 pm ET | Jared Isaacman's expected nomination to be the next NASA Administrator is winning praise from some Republicans, includ...

spacepolicyonline.com

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Greg Dubos @astroptere.bsky.social · Apr 24

Cool rock found by the Perseverance rover on Mars!

Origins Uncertain: ‘Skull Hill’ Rock - NASA Science

Written by Margaret Deahn, Ph.D. Student at Purdue University

science.nasa.gov

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Greg Dubos @astroptere.bsky.social · Apr 17

Very exciting results from observations made with JWST!

Promising hints of life found on distant planet K2-18b

Scientists find new but tentative evidence that a faraway world orbiting another star may be home to life.

www.bbc.com

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Reposted by Greg Dubos

Skylar Grayson @skylargrayson.bsky.social · Apr 15

Did you know NASA science is facing a 50% budget cut??? Please read this @astrobites.bsky.social post to learn more about it and what you can do astrobites.org/2025/04/15/h...

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 ...

astrobites.org

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Greg Dubos @astroptere.bsky.social · Apr 14

Today, it has been 6 months since Europa Clipper launched from Kennedy Space Center, shortly after hurricane Milton caused havoc in the region.
The spacecraft has been doing great ever since!

Cela fait maintenant 6 mois qu’Europa Clipper a été lancé depuis le centre spatial Kennedy!

Greg Dubos @astroptere.bsky.social · Apr 14

I didn’t have earthquake on my bingo card as flight director for Europa Clipper this morning! Glad the early warning notification worked and luckily the shaking on the 4th floor of our mission control was very limited.

Greg Dubos @astroptere.bsky.social · Apr 12

Got a cool new Clipper patch this week!
Un nouveau patch Clipper sympa !

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Greg Dubos @astroptere.bsky.social · Apr 11

Today we are five years away from Europa Clipper’s arrival at Jupiter on April 11, 2030.

Are you ready for exciting discoveries about Europa, an icy moon that might harbor life in its subsurface ocean? 🤩

Nous sommes à 5 années de l’arrivée d’Europa Clipper a Jupiter !

Greg Dubos @astroptere.bsky.social · Apr 11

arstechnica.com/space/2025/0...

Trump White House budget proposal eviscerates science funding at NASA

“This would decimate American leadership in space.”…

arstechnica.com

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Greg Dubos @astroptere.bsky.social · Apr 3

Thank you Senator @mathildeollivier.bsky.social for visiting JPL and having a discussion with French scientists and engineers!

Merci à notre sénatrice Mathilde Ollivier de nous avoir rendu visite à JPL et d’avoir échangé avec les chercheurs et ingénieurs français !

Greg Dubos @astroptere.bsky.social · Mar 20

Things are getting exciting! Get the samples back to Earth! 🤩
www.nature.com/articles/d41...

Did Mars harbour life? One of the strongest signs yet is spotted in a peculiar rock

The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity — or not.

www.nature.com

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Greg Dubos @astroptere.bsky.social · Mar 20

www.theguardian.com/us-news/2025...

French scientist denied US entry after phone messages critical of Trump found

France’s research minister said the scientist was traveling to Houston for a conference when his phone was searched

www.theguardian.com

Greg Dubos @astroptere.bsky.social · Mar 19

I’m a #STEMinist. Are you?

Greg Dubos @astroptere.bsky.social · Mar 17

Awesome documentary in French about the history of JPL! By @astrovicnet.bsky.social

Superbe documentaire sur l’histoire de JPL à travers les mouvements géopolitiques! Bel hommage à toutes ces missions interplanétaires qui font rêver (Voyager / Pathfinder m’ont poussé à travailler dans le spatial!)

Vincent Heidelberg ↙️↙️↙️ @astrovicnet.bsky.social · Feb 8

NOUVELLE VIDEO

Sur un sujet incroyable

youtu.be/ik6pex5qSGk

JPL - D'un terrain vague aux confins du Système Solaire - Documentaire espace 2025

YouTube video by Stardust - La Chaîne Air & Espace

youtu.be

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Greg Dubos @astroptere.bsky.social · Mar 12

Good luck SphereX and PUNCH for the launch tonight! 🚀

Reposted by Greg Dubos

Itai Yanai @itaiyanai.bsky.social · Mar 3

When your kids ask you what you did to save US science in the crisis of ‘25, you will say that you showed up! Please spread the word and join us!!
@standupforscience.bsky.social

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