Jean-Luc Margot's Avatar

Jean-Luc Margot

@jeanlucmargot.bsky.social

Planetary astronomer πŸ“‘ and UCLA professor. Interested in dynamics, geophysics, SETI πŸ‘½. https://seti.ucla.edu/jlm

704 Followers  |  77 Following  |  96 Posts  |  Joined: 15.11.2024  |  1.8058

Latest posts by jeanlucmargot.bsky.social on Bluesky

Preview
Carl Sagan’s scientific legacy extends far beyond β€˜Cosmos’ On what would’ve been the astronomer’s 90th trip around the Sun, here’s a look at his legacy as a scientist, advocate and communicator.

Carl Sagan was born on this day. Reflections on his legacy:
theconversation.com/carl-sagans-...

09.11.2025 17:52 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image

Today from 12:00 pm to 5:00 pm, UCLA is hosting its largest science fair for K-12, with nearly 70 interactive science booths staffed by real scientists. Admission is free and open to the public. Map: exploringyouruniverse.ucla.edu/booth-map/

02.11.2025 15:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
University of California faculty push back against Big Brother cybersecurity mandate School officials defend software as bulwark against ransomware, but professors fear potential surveillance of their devices

Requiring an insecure back door to faculty computers is one of the worst ideas at the University of California.
www.science.org/content/arti...

24.10.2025 05:35 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Preview
The radio search for technosignatures in the decade 2020-2030 Advancing the scientific frontier in the search for life in the universe requires support of searches for both biosignatures and technosignatures. A modest budgetary increment can expand the search fo...

I had a great time on the Search for Life panel sponsored by the UCLA Space Institute yesterday. I described four advantages of the search for technosignatures: cost, search volume, certainty of interpretation, and potential information content. arxiv.org/abs/1903.05544

22.10.2025 22:24 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

We discussed planetary atmospheres and climate change this week in my Science in the Movies class, with an assist from The Day After Tomorrow (2004).

22.10.2025 22:17 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image

This week in Science in the Movies, I showed three scenes from Jon Amiel's The Core (2003) to illustrate planetary interior properties.

14.10.2025 16:57 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Dr. Fred Ramsdell (UCLA PhD 1987) is the ninth UCLA alum to receive a Nobel prize. Eight UCLA faculty have also earned the prize.

07.10.2025 05:16 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | My City Is the Heart of Europe, and It’s Not Doing Well

This unflattering opinion of Brussels is hard to reconcile with my monthlong stays there in 2024 and 2025.
www.nytimes.com/2025/10/02/o...

06.10.2025 13:18 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | Trump’s β€˜Compact’ With Universities Is Just Extortion

It felt like extortion when federal grants to UCLA were suspended. This NYT opinion piece reinforces the feeling.
www.nytimes.com/2025/10/02/o...

03.10.2025 13:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1
Search volume metrics for historical surveys and UCLA SETI

Search volume metrics for historical surveys and UCLA SETI

I had the privilege of presenting a brief report on UCLA SETI activities at the annual IAA SETI Committee meeting yesterday, with updates to the search volume values in our paper bit.ly/AJ23

01.10.2025 22:01 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Covers of nine blockbuster movies used in the class Science in the Movies

Covers of nine blockbuster movies used in the class Science in the Movies

The first week of my class Science in the Movies went well. Lots of fun demos and a few scenes from the movie Gravity to illustrate Newton's laws.

01.10.2025 21:26 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 1
Preview
Science Magazine - NSF held captive In April, the National Science Foundation (NSF) announced its latest class of graduate research fellows, a storied program dating from the agency’s earliest days that has fueled the careers of 50...

Science Magazine – NSF held captive
www.sciencemagazinedigital.org/sciencemagaz...

26.09.2025 16:41 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The Evpatoria radio telescope was used in occasional planetary radar studies, including the detection of asteroid Golevka (Gol-Ev-Ka), named after three radio telescopes.
www.space.com/astronomy/dr...

19.09.2025 13:19 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Targeted SETI approach to find alien life Targeted SETI approach listens for alien radio 'spillover' during planetary alignments, using Earth's deep space communications as a guide.

www.astronomy.com/science/to-f...

14.09.2025 19:39 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Top five Venus mysteries Envision will solve Venus is a Solar System enigma. Similar in size to Earth and orbiting the Sun at a similar distance, it is remarkable how the two planets evolved so differently. While conditions on Earth allowed life...

Venus is a Solar System enigma.

Although Venus is similar in size and distance from the Sun to Earth, it has evolved very differently from our planet.

Our #Envision mission will aim to solve some of the puzzle by thoroughly studying our closest neighbour.
www.esa.int/Science_Expl... πŸ”­

12.09.2025 09:28 β€” πŸ‘ 209    πŸ” 41    πŸ’¬ 7    πŸ“Œ 2
Preview
Opinion | Trump’s Policies Are Endangering Your Health

www.nytimes.com/2025/09/12/o...

12.09.2025 12:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1
Preview
Your Zodiac Sign Is 2,000 Years Out of Date (Gift Article) Over millennia, our view of the stars has shifted, because of Earth’s wobble. It may be time to rethink your sign.

Basic astronomy lesson courtesy of the New York Times
www.nytimes.com/interactive/...

08.09.2025 14:06 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | We Ran the C.D.C.: Kennedy Is Endangering Every American’s Health

www.nytimes.com/2025/09/01/o...

01.09.2025 22:56 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It should never be easier to access a gun than a vaccine.

29.08.2025 19:52 β€” πŸ‘ 2228    πŸ” 531    πŸ’¬ 25    πŸ“Œ 20
Preview
Historians See Autocratic Playbook in Trump’s Attacks on Science

β€œThey’re afraid that basic knowledge will expose their false claims.” www.nytimes.com/2025/08/31/s...

31.08.2025 14:32 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | The Playbook Used to β€˜Prove’ Vaccines Cause Autism (Gift Article) Data can easily be manipulated to show a causation that doesn’t exist.

This excellent piece describes the deceptive practices used by quacks to advance false claims. Beware! www.nytimes.com/interactive/...

19.08.2025 11:33 β€” πŸ‘ 4    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0

David Grinspoon confirms that his term appointment as NASA's Senior Scientist for Astrobiology Strategy will not be renewed and the position itself is being eliminated. He'll participate in Wednesday's Astrobiology Update (which is listed on our Calendar).

18.08.2025 14:05 β€” πŸ‘ 61    πŸ” 33    πŸ’¬ 3    πŸ“Œ 5
Preview
Opinion | Geometry Solves Gerrymandering

www.nytimes.com/2025/08/12/o...

12.08.2025 19:10 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
Preview
The true cost of abandoning science The true cost of abandoning science

Los Angeles Times op-ed from colleague Steven Furlanetto
enewspaper.latimes.com/infinity/art...

07.08.2025 12:02 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | Universities Have Woken Up to Find They’re in Bed With an Ogre

Good conversation about the position in which US universities find themselves:
www.nytimes.com/2025/08/05/o...

06.08.2025 07:55 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
La Promenade verte : visitez Bruxelles Γ  pied ou Γ  vΓ©lo La Promenade verte est un parcours encerclant la RΓ©gion de Bruxelles-Capitale. Profitez, Γ  pied ou en vΓ©lo, d’un itinΓ©raire de 60 km divisΓ© en 7 tronΓ§ons.

The Belgians have created a superb walking/biking trail around Brussels. Highly recommended! environnement.brussels/citoyen/lenv...

30.07.2025 08:55 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1
Preview
Fifteen years later, Science retracts β€˜arsenic life’ paper despite study authors’ protests Belated decision on widely disputed 2010 study pleases some critics but puzzles and dismays others

Science Magazine finally recognizes it was wrong to publish arsenic paper. www.science.org/content/arti...

30.07.2025 06:47 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | As the Texas Floodwaters Rose, One Indispensable Voice Was Silent

www.nytimes.com/2025/07/09/o...

10.07.2025 05:48 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Opinion | In the Quest to Shrink NASA, Trump Forgets National Security

www.nytimes.com/2025/06/28/o...

29.06.2025 05:54 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Welcome! You are invited to join a webinar: NASA Budget Briefing. After registering, you will receive a confirmation email about joining the webinar. Join The Planetary Society's Space Policy & Advocacy team for a community briefing on the FY 2026 President's Budget Request for NASA. Participants will be able to submit questions during the briefin...

The Planetary Society will provide a NASA budget briefing on Thursday, June 12, at 12pm ET! We'll answer the top-rated scientific community questions, share everything we know, and give you our expert perspective on what's going on. Register for free here: us06web.zoom.us/webinar/regi...

11.06.2025 17:57 β€” πŸ‘ 57    πŸ” 30    πŸ’¬ 1    πŸ“Œ 5

@jeanlucmargot is following 19 prominent accounts