Les nouvelles du 27 mars 2023: 


1) Atelier blanc du PNP aux Journées de la SF2A | 23 juin 2023 | SF2A, Strasbourg 

2) Appel d’offre INSU OHP-T193 et TBL, pour le semestre 2023B | DL 27 avril 2023

3) Expression of interest for collaboration with CFHT

4) Galilean Moons Workshop | Oct 24-26, 2023 | Aix-en-Provence

5) International Conference on Space Exploration | 10-12 May 2023 | Politecnico di Torino - Turin - Italy

6) Atelier “La matière organique dans tous ses états” | 22 au 24 novembre 2023 | Fréjus

7) Titan Through Time meeting #6 | 13-15 June 2023 | Paris

8) Announcing : Ile-de France Planets

9) Poste de CPJ CNRS Astrochimie

10) Post-Doc related to the sub surface radar on Envision (SRS), University of Trento

11) PhD Position: Simulation of Martian Ground Ice | GEOPS, Université Paris-Saclay 

12) Thèse, HDR, séminaires

    a) Collapse and Ejection in the N-body problem and the Formation of Rubble Pile Asteroids | Prof. Dan Scheeres (Univ. Colorado) | Monday 27 Mar 2023, 14:00 CEST

    b) AstroGeo Seminar | Didier Paillard  (LSCE, France) |  Climate and astronomy: from historical theories to future perspectives | Thursday March 30  at 15:00 



Bien cordialement,


La liste de diffusion du PNP a pour vocation la communication auprès de tous les chercheurs en planétologie et exoplanétologie en France. 

Pour s’inscrire ou se désinscrire, c’est ici : https://listes.services.cnrs.fr/wws/info/pnp_news.

N’hésitez pas à faire suivre cette information auprès des chercheurs/doctorantes/post-doctorants de votre laboratoire.



1) Atelier blanc du PNP aux Journées de la SF2A | 23 juin 2023 | SF2A, Strasbourg 



Les journées de la SF2A 2023 se tiendront du 20 au 23 juin 2023 à Strasbourg.
Le Programme National de Planétologie organise un atelier « blanc » couvrant toutes les thématiques suivantes:


  • Systèmes extrasolaires;
  • Petits corps;
  • Origine des systèmes planétaires;
  • surfaces planétaires, enveloppes planétaires externes (atmosphères, magnétosphères) et internes.


Toutes les méthodologies sont les bienvenues: expériences de laboratoires, travaux théoriques, de modélisation et bien sûrs celles liées à l’analyse d’observations sol ou spatiales.

Nous encouragerons particulièrement les jeunes chercheurs à présenter leur travaux et veillerons à leur accorder une place importante dans notre programme de contributions orales.

La soumission des abstracts pour les ateliers est ouverte jusqu'au 7 Avril inclus.

Vous trouverez les informations concernant les ateliers, les sessions plénières et les différents aspects pratiques sur le site web suivant :  https://journees.sf2a.eu/


2) Appel d’offre INSU OHP-T193 et TBL, pour le semestre 2023B | DL 27 avril 2023


L’appel d’offre INSU pour les observations sur les télescopes de 2-m, OHP-T193 et TBL, pour le semestre 2023B est sorti :  https://programmes.insu.cnrs.fr/actualite/appel-doffres-telescopes-nationaux-call-for-proposals-for-observations-on-the-french-telescopes-at-ohp-and-tbl-2023b/ .

Date limite de réponse : 27 avril 2023, midi (heure de Paris)




3) Expression of interest for collaboration with CFHT

The Canada-France-Hawai‘i Telescope (CFHT) invites expressions of interest in collaboration as we seek to broaden our global community of partners.  First, we invite participation in our Associate Partnership Program, utilizing our current suite of instruments spanning ultraviolet to near-infrared wavelengths with wide-field imaging and high-resolution spectroscopy capabilities. Second, we invite you to respond to the Call for Letters of Interest to participate in the development of the Maunakea Spectroscopic Explorer through either the:

- Design and fabrication of MSE-Pathfinder, an instrument for CFHT design of the Maunakea Spectroscopic Explorer (MSE)
- Design of the Maunakea Spectroscopic Explorer (MSE)

A comprehensive set of documents detailing the above opportunities can be found on our website: https://www.cfht.hawaii.edu/en/news/LoI/ .

Included on the page is a list of contacts for each document.

The purpose of this call is to identify institutes/organizations interested in participating in the above opportunities. Those interested in exploring associate partnerships in CFHT or in partnering on Pathfinder and/or MSE project development should reply to this email with a letter of interest by May 1st.

Additional information and discussions will proceed with interested parties beginning May 2023.

Transmis par Jean-Gabriel Cuby


4) Galilean Moons Workshop | Oct 24-26, 2023 | Aix-en-Provence

The Workshop on the Origins and Habitability of the Galilean Moons aims to establish the link between our knowledge of the present natures of Io, Europa, Ganymede, and Callisto, and their formation conditions. The goal is to prepare for the arrival of the ESA/JUICE and NASA/Europa-Clipper missions in the Jovian system. This workshop, held in Aix-En-Provence, France, is the first of a series to be held at 2-3 year intervals before the arrivals of the two missions around Jupiter. The workshops’ locations will alternate between Europe and the US to ensure broad international participation.

The Workshop on the Origins and Habitability of the Galilean Moons will be held at the Maison méditerranéenne des sciences de l’homme in Aix-en-Provence. This workshop is hosted by the Institut Origines of Aix-Marseille Université, the Johns Hopkins Applied Physics Laboratory, and the Jet Propulsion Laboratory. In-person attendance at the workshop will be limited to 120 people. Priority will be given to submitted talks and/or posters. Limited virtual participation may be available. The three-day in-person workshop will be co-chaired by Olivier Mousis, Kathy Mandt and Morgan Cable. Further information can be found here: 


This first workshop will extend discussions to all the giant planets systems, and strategize paths forward for future missions to the ice giants and Saturn systems. Appropriate workshop topics include science, technologies, and mission concepts relevant to future explorations of giant planets moons and rings. In particular, the link between the composition of the moons and the formation conditions of the giant planets systems, as well as their potential habitability, as evidenced by measurement techniques, instrumentation, theoretical modeling, laboratory and field experiments, and future mission concepts in the framework of international collaborations, are of high interest.


5) International Conference on Space Exploration | 10-12 May 2023 | Politecnico di Torino - Turin - Italy

Take part in this event which will bring together high level players in the field of SPACE EXPLORATION!

Organised by the Air and Space Academy (AAE), with the support of Politecnico di Torino, the Italian Association of Aeronautics and Astronautics (AIDAA) and the Space Generation Advisory Council (SGAC).

This conference will focus on a few important themes underpinning Space Exploration, with the aim of providing useful input to agencies or other bodies in charge of building programmes. Keynote speeches by leading personalities will address the purposes and policies behind space exploration and provide an overview of the current state of play.

Seven sessions will examine aspects fundamental for most exploration projects:

  1. Philosophy and cultural motivations
  2. Dream missions (featuring prizewinning projects selected by SGAC)
  3. Towards an environment-friendly approach to Lunar exploration
  4. Flying machines
  5. Going faster (and further)
  6. Water: our quest for “oases” in the Solar System
  7. Human-robots collaboration

A number of Q&A sessions, together with a wrap-up moderated by SGAC, will aim to give the floor to the audience. Other highlights include a contradictory debate on "Life in the universe: rule or exception?"
An ice-breaking cocktail will end the first day and a visit to Thales Alenia Space is planned for the end of the second day.

Further information, registration and programme:academieairespace.com/space-exploration/programme



6) Atelier “La matière organique dans tous ses états” | 22 au 24 novembre 2023 | Fréjus

Le Groupement de recherche PILSE (https://gdr-pilse.cnrs.fr/) a été mis en place entre l’INSU et l’INC, pour renforcer au niveau national la communauté INSU dans sa capacité à analyser la matière organique et son interaction avec les matrices minérales au sein d’échantillons extraterrestres ou de leurs analogues. 

Dans ce contexte, le GdR organise du 22 au 24 novembre 2023, au centre CNRS de Fréjus, un atelier qui permettra la rencontre entre des chercheurs de l’INC et de l’INSU dans le cadre du développement de méthodes d’extraction de la matière organique et de méthodologies analytiques pour l’analyse de celle-ci. Les approches entre ces différentes communautés pouvant être complémentaires, notre objectif est de créer des temps d’échanges pour faire émerger de nouvelles approches et potentiellement des nouvelles collaborations autour de ces thématiques.

Le programme de ces journées sera partagé entre des présentations de chercheurs invités présentant leur expertise scientifique et technique sur une méthodologie ou instrumentation donnée. Les présentations seront suivies d’ateliers facilitant les échanges. Chaque technique ou méthodologie sera présentée par un ou une chercheur(se) de l’INC, et son application à l’analyse d'objets extraterrestres sera présentée par un chercheur(se) de l’INSU. Cette comparaison des approches de chaque communauté devrait permettre d’identifier les développements manquants et les améliorations possibles en termes d’analyse de la matière organique. 

Les frais d’hébergement et de repas seront pris en charge par le GdR PILSE, seuls les frais de déplacement seront à la charge des participants. Le nombre de participants sera limité à 50. La limite pour les préinscriptions est fixée au 2 octobre 2023 par envoi d’un message à Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.. Les inscriptions seront validées par information aux participants au cours de la semaine du 9 octobre 2023. 

L’ensemble des informations sont disponibles sur le site du GdR (https://gdr-pilse.cnrs.fr/workshop-2023/).

Bien cordialement.

Les organisateurs, Grégoire Danger, Frédéric Foucher, Cornelia Meinert, Pauline Poinot et Vassilissa Vinogradoff.


7) Titan Through Time meeting #6 | 13-15 June 2023 | Paris


Dear all,

A quick, but important, announcement to let you all know that the website for the next Titan Through Time meeting in Paris is now officially online, as well as the opportunity to register and submit an abstract.

This is here:https://sites.google.com/view/titanthroughtimeparis2023/home

You will find information on the location of the meeting, a few first hints for the logistics, and a dedicated page for registration and contribution submission (oral or poster). The meeting will be full-hybrid, but only remote oral presentation will be available.

The deadline for registration and abstract submission is fixed on 15th of April. The program will soon follow.

Please keep tuned on the website as we will continue on populating it with new information on a regular basis.

We are sincerely looking forward seeing you all in Paris next June.
Sebastien Rodriguez, for the LOC and SOC of the TTT #6"



8) Announcing : Ile-de France Planets

We are pleased to announce the creation of the "Ile-de-France Planets" community (https://www.ile-de-france-planets.fr) that hosts several resources for planetary scientists working in Paris and the surrounding region of Ile-de-France. 

The goals of Ile-de-France Planets are to 
* aid in fostering interactions among the planetary scientists who work in this region,
* promote the attractivity of doing research in Ile-de-France to students, postdocs, and early career scientists, 
* improve the visibility of the planetary science seminars that are held within our laboratories, and
* facilitate the dissemination of information within this community (such as master and Ph.D. thesis topics, post-doc positions, job openings, and research highlights).

We provide a variety of information about planetary science research in Ile-de-France for both professionals and students. We also provide several services, such as email distribution lists, forums, calendars, and the publicity of research results on social media. Please check out our website and get involved!


9) Poste de CPJ CNRS Astrochimie

L’INC a sélectionné la thématique de l’astrochimie pour le laboratoire MONARIS-Sorbonne Université dans le cadre des postes Chaire de Professeur Junior CPJ-CNRS. L’équipe Astrochimie de MONARIS  recherche un(e) candidat(e) à présenter pour ce concours pour travailler sur les processus physico-chimiques de formation de molécules organiques dans les milieux astrophysiques ou dans les objets du système solaire (surface ou atmosphère), en se basant sur des développements de chimie analytique. L'offre d'emploi vient de paraître sur le site du CNRS


On y trouve plusieurs informations importantes: la date limite de dépôt des candidatures est le 14 avril pour une date d'embauche le 1er juillet 2023, et surtout le lien pour postuler. Si vous êtes intéressé (e) pour vous présenter sur un projet expérimental au laboraoire MONARIS, merci de contactez L. Krim. lahouari.krim@sorbonne-universite.f

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%10) Post-Doc related to the sub surface radar on Envision (SRS), University of Trento

Dear Venus Science community,

On behalf of Professor Lorenzo Bruzzone, please be informed about the following postdoc opportunity related to the sub surface radar on Envision (SRS), at the Department of Information Engineering and Computer Science, University of Trento:


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%11) PhD Position: Simulation of Martian Ground Ice | GEOPS, Université Paris-Saclay

The project aims to significantly advance our understanding of very shallow ground ice on Mars, which has been found to be much more widespread than once thought. This is the most accessible ice to future human exploration, and is important as a potential astrobiology target.

We propose a program based on the simulation of the formation and evolution of ground ice to understand its origin. Previous work could not predict the presence of ice near surface at mid and low latitude. The proposed task consists of creating an unprecedented simulation tool, including the main processes governing surface ice microphysics. Several pieces are already present in the literature, but the novelty and extremely promising nature of the present approach is to encompass them all since they all contribute to the evolution of ices with potentially similar time/length scales. This model will be designed to be coupled with Global Climate Model (GCM). The second aspect of the project will be focused on quantitative geomorphology. By proposing new proxies, we propose to reassess the mapping of ice on Mars. The final step of the project will be a comparison between simulations and geomorphological mapping to decipher the ice mobility on the Red Planet.

We seek a highly motivated candidate with an MSc degree in at least one of those fields: planetary science / climate science / physics / geosciences / remote sensing / astronomy / numerical simulations with excellent programming skills. The PhD will be evolving in an international and multidisciplinary environment.

The project is fully funded for 3 years. Candidates are encouraged to apply by the end of April 2023, but later applications will be reviewed until the position is filled. The start date of the thesis is expected in October 2023 but can be flexible.

Candidates should provide a CV, transcript of records and a cover letter.

More info here : https://secure-web.cisco.com/1n2CXrA6RnpoF6-ccluxVpk-1ZmI0nWX9zeploSWX2pTnoVSa0t1Lv9GG9l1NNKxnz9STrPbKG2yRhc4ifjYvI0DmdhMHAVy2jSjPMi80EMBUMUX5g7hQZ-dCAM8WlO5maQLjNHMGX1gre-kwNT2WZcl73izDWF_EBNRQdPpiFJKxypOcxGWScJHFlii3jjTNjgniq4AQlrih6SYLRUMhuogGv2s2A7u41WBSeiGZF0QI5cd74upyVsmRwxuljOMnhGj5etzH8MmpXYQo49VBwtf3wQV-COjyyB2Z-OEjXx9lCedSzB0ypz11909siB-brKEGGsz2JaWSzIRa01zIjgoseHVsiWB8mtDMHyxh3odo8bZD-doYK6EHdPGkIQ6MMkMD7HVWwRk_zoFI1NSFopAhh9guEYDrd9nJ0VzTyfrt-gyf8DiPOxGoHuajwv7LD6-nVMVPpsKEAOIqdnYgiLqItxobicInFECKx-Zzj2QoIrp9WovVq9MfrC75DMP5/https%3A%2F%2Fbit.ly%2F3JF4CYh

Frédéric Schmidt
GEOPS – GEOsciences Paris-Saclay
Université Paris-Saclay, Orsay, France
Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.


12) Thèse, HDR, séminaires

a) Collapse and Ejection in the N-body problem and the Formation of Rubble Pile Asteroids | Prof. Dan Scheeres (Univ. Colorado) | Monday 27 Mar 2023, 14:00 CEST

Un lien zoom est proposé pour une participation à distance : https://cnrs.zoom.us/j/93384548454?pwd=ZEFJTU1Hd3h2SjJhL01SUXVFdGg5dz09

ID de réunion : 933 8454 8454

Code secret : Zpq9kh

Rubble pile asteroids are thought to form in the aftermath of cataclysmic collisions between proto-planets. The details of how the detritus from such collisions reaccumulate to form these bodies are not well understood, yet can play a fundamental role in the subsequent evolution of these bodies in the solar system. Simple items such as how particle sizes and porosity is distributed within a body can have a significant influence on how they subsequently evolve. Current space missions are just starting to gain limited insight into these fundamental questions, but require a better theoretical understanding to fully explain their observations.

To that end, this work studies how the initial energy and angular momentum of a random collection of gravitating bodies is partitioned and redistributed between escaping components and bound multiple body systems. A generic initial distribution of N bodies will naturally lose many components due to multi-body dynamical interactions. If the bodies have finite density, some components will also form condensed distributions. We find and apply rigorous results from the Full N-body problem to place limits and constraints on how the energy and angular momentum of such systems can evolve, which may control the formation of stable rubble pile asteroids.

We are able to establish some of our constraints analytically, providing unique insight into this process. Ultimately, however, we require numerical simulations to elucidate certain aspects of the ejection process. As will be shown, these gravitational ejections will always reduce the system energy yet can cause significant fluctuations in the total angular momentum of the remaining bodies. Some possible implications of these trends will be discussed.

b) AstroGeo Seminar | Didier Paillard  (LSCE, France) |  Climate and astronomy: from historical theories to future perspectives | Thursday March 30  at 15:00 

The next AstroGeo Seminar will  be on Thursday March 30  at 15:00 (Paris time). We will have the pleasure to host Didier Paillard  (LSCE, France) with a talk on the paleoclimate models.

Title : Climate and astronomy: from historical theories to future perspectives

The zoom link  for the March AstroGeo seminar  is  https://us02web.zoom.us/j/86291917004

Since the invention of calendars by the first astronomers during the antiquity, it is quite natural to link climate and celestial mechanics. The discovery of ice ages in the 19th century sparked the emergence of the concept of climate change and of the first corresponding theories, either astronomical or based on atmospheric CO2 variations. In the early 20th century, Milutin Milankovitch established a solid foundational theoretical background to explain the role of astronomy on glaciations, but even today many pieces of the puzzle of ice ages are still missing. A key difficulty lies in the mechanisms involved in the dynamics of the carbon cycle on long time scales. Besides, the role of astronomy on climate is obviously not restricted to the question of ice-sheet changes and it is well known that the hydrological cycle in many semi-arid and monsoon areas is strongly linked to precession, independently of glaciations. On longer time scales, there is a strong imprint of the 400-ky and 2.4 Myr eccentricity cycles onto carbon isotopic records all over the Cenozoïc but probably also over much older time periods. This suggests a more direct and persistent link between astronomy and the Earth’s carbon cycle. During this talk, I will present a rapid historical overview of the astronomical theories of climate and discuss some key difficulties. In particular, I will insist on
the role of multiple equilibria in the climate system as a useful ingredient for current and future theories.