Everything Astronomy continues to bring you fascinating insights from the world of astronomy, space science and more! This month our special guest speaker is Dr. Marian Selorm Sapah, a lecturer and research scientist at the Department of Earth Science, University of Ghana. Her research interests are focused on the areas of Cosmochemistry, Geochemistry, and Geoscience education. As a founding member of the Africa Initiative for Planetary and Space Science (AFIPS), she seeks to elevate Planetary and Space Science across the African continent, through cutting edge collaborative research, capacity building and outreach.
Join us as Dr Marian introduces us to the world of Cosmochemistry!
We are pleased to invite you to the fourth edition of On the Moon Again (www.onthemoonagain.org) which will take place on June 23, 24 and 25, 2023. It will be the occasion to meet again around the Moon and to share again the wonder. On the Moon Again has now become an unmissable moment and touches tens of thousands of people every year thanks to you.
We invite you again to take your telescope out into the street and share the wonders of the Moon with as many people as possible (respecting the health rules in force). As last year, 40 000 cards of the Moon (A4 size) to be distributed to the public you will meet during the operation will be sent in mid-June to all registered participants. We will also try to send you this year A3 posters and 2 On the Moon Again badges (subject to funding).
In order for us to organize the mailing of these cards, we ask you to register to On the Moon Again on the following link before Monday, May 8th: https://forms.gle/sMBH9EGeZ6YKENB56
Important: Some of you have already registered and used the English link on the website www.onthemoonagain.org. If you have already registered, please also fill in the above link (in French) as we did not ask for your postal address in the previous link.
We hope to see many of you during this new edition of On the Moon Again!
Nous sommes heureux de vous inviter à la quatrième édition de On the Moon Again (www.onthemoonagain.org) qui aura lieu les 23, 24 et 25 juin 2023. Ce sera l’occasion de nous retrouver autour de la Lune et de partager de nouveau l’émerveillement. On the Moon Again est désormais devenu un moment incontournable et touchent tous les ans plusieurs dizaines de milliers de personnes grâce à vous.
Nous vous invitons de nouveau à sortir votre télescope dans la rue et à partager les merveilles de la Lune avec le plus grand nombre (en respectant les règles sanitaires en vigueur). Comme l’an dernier, 40 000 cartes de la Lune (format A4) à distribuer au public que vous rencontrerez durant l’opération seront envoyées mi-juin à tous les participants inscrits. Nous essaierons également de vous envoyer cette année des posters A3 et 2 badges On the Moon Again (sous réserve de financement).
Afin que nous organisions l’envoi postal de ces cartes, nous vous demandons de vous inscrire à On the Moon Again sur le lien en francais suivant avant le lundi 8 mai: https://forms.gle/sMBH9EGeZ6YKENB56
Important: Certains d’entre vous sont déjà inscrits et ont utilisé le lien en anglais accessible sur le site web www.onthemoonagain.org. Si vous vous êtes déjà inscrit, merci de remplir également le lien en français car nous ne demandions pas votre adresse postale dans le lien en anglais.
En espérant vous voir très nombreux durant cette nouvelle édition d’On the Moon Again!
We are happy to announce that the fourth edition of On the Moon Again (https://www.onthemoonagain.org) will take place on June 23, 24 and 25, 2023.
It will be an opportunity to gather around the Moon and share the wonder again like we did last year. In 2022, nearly 450 events were organized in 50 countries and allowed us to share our satellite with a few hundred thousand people.
We invite you again in June to get your telescope out into the street (respecting the sanitary rules in your country). It is easy, register now on https://forms.gle/TrdZ2MwqsAku6JXK6
As participants in last editions of On the Moon Again, we count on you to communicate widely and invite telescope owners to join us.
Europlanet WorkshopSeries aims to inspire and encourage planetary science and space technology development across borders in developed and developing countries and across the spectrum of academia, industry and civil society.
This third Europlanet Workshop Series will bring together space specialists, scientists and graduated students to discuss current topics in this rapidly developing space field, especially in meteorites, meteoroids, comets, asteroids and impact craters.
The workshop format focuses on content and collaboration and targets in order to strengthen African networks in Space and Planetary Science.
We are happy to announce to all AFIPS members that the third edition of On the Moon Again (www.onthemoonagain.org) will take place on July 8, 9 and 10, 2022.
It will be an opportunity to gather around the Moon and share the amazement again. In 2021, nearly 400 events were organized in 47 countries and allowed a few hundred thousand people to explore our satellite. Several events were organized in Africa and we hope that many more will be organized this year on the continent with the most beautiful (and dark) skies of the world !
We invite you again to take your telescope out into the street. To do so, it is very simple, register now on https://forms.gle/JoAtr6HULdkeiKTu9
As participants of the last editions of On the Moon Again, we hope that you will join us again. We invite you to communicate widely to invite telescope owners to join this new edition of On the Moon again.
Cheikh Ahmadou Bamba NIANG is the first PhD student in Planetary Science in Senegal. With a first research experience (Master degree) on the remote sensing analysis of the potential impact structure of Velingara in Casamance, he decided to move forward and got enrolled in the PCSTUI (Physique,Chimie, Science de la Terre de l’Univers et de l’Ingénieur) Doctoral School of the University Cheikh Anta Diop in Dakar. His first scientific article, published as a peer-reviewed chapter of the Geological Society of America Special paper is now online:
Cheikh Ahmadou Bamba Niang, David Baratoux, Dina Pathé Diallo, Pierre Rochette, Mark W. Jessell, Wolf U. Reimold, Sylvain Bouley, Olivier Vanderhaeghe, Gayane Faye, Philippe Lambert, 2021. “Systematic survey of K, Th, and U signatures in airborne radiometric data from Australian meteorite impact structures: Possible causes of circular features and implications“, Large Meteorite Impacts and Planetary Evolution VI, Wolf Uwe Reimold, Christian Koeberl. https://doi.org/10.1130/2021.2550(15).
This research paper presents a systematic survey of the concentration of potassium (K), thorium (Th) and uranium (U) concentration at and around impact structures in Australia from radiometric maps and the implication of this research for impact science in general.
Titre de la thèse: Monitoring the activity and composition of comets with TRAPPIST telescopes .
Monitoring of the activity and composition of comets 41P/Tuttle–Giacobini–Kresak and 45P/Honda–Mrkos–Pajdusakova CN coma morphology of 41P on April 27, 2017 (after perihelion). The images are enhanced by a simple rotational filter. The date (in UT) is indicated at the top of each frame. In all images north is down and east to the left with the direction of the Sun as indicated in the right frame. The field of view of each image is 8.4′ × 7.6′ , which covers 67 500 × 62 800 km (Moulane et al. 2018, Astronomy and Astrophysics).
Résumé
Les comètes font partie des corps les plus primitifs du système solaire et offrent une occasion unique d’étudier ses origines, il y a 4,6 milliards d’années. Durant sa thèse, Mr. Moulane a utilisé régulièrement les deux télescopes robotiques TRAPPIST-Nord (installé au Maroc) et TRAPPIST-Sud (au Chili) pour observer avec des filtres spéciaux les comètes brillantes des deux hémisphères, dans le but d’étudier la composition chimique de leurs atmosphères. Grâce au temps de télescope disponible, Mr. Moulane a collecté et analysé ces cinq dernières années un ensemble de données unique formé de milliers de mesures photométriques d’un échantillon de 35 comètes, appartenant aux différentes familles dynamiques dont la première comète interstellaire découverte en 2019. Ces mesures apportent de nouveaux éléments concernant des questions longuement débattues comme l’existence de différentes classes de composition dans les comètes, les changements des rapports d’abondance avec la distance au Soleil et le lien entre la composition chimique et les origines dynamiques des comètes. Des questions importantes dans la compréhension de la formation des comètes et du système solaire lui-même.
Le Jury sera composé de :
M. D. GRODENT (Président), Mme et MM. Z. BENKHALDOUN (Université Cadi Ayyad) (Promoteur), J. DE KEYSER (Royal Belgian Institute for Space Aeronomy), D. HUTSEMEKERS (Secrétaire), E. JEHIN (Promoteur), C. OPITOM (University of Edinburgh), P. ROUSSELOT (Université Bourgogne Franche-Comté), I. SCHNEIDER (Université du Havre), B. YANG (European Southern Observatory, Chile).
Membres invités (Rapporteurs pour l’UCA)
– Pr. Hasnaa Chennaoui Aoudjehane (Hassan II University of Casablanca UH2C, Morocco) , Jabiri Abdelhadi (Cadi Ayyad university, Morocco), Dennis Bodewits (Auburn University, USA)
Lien public pour la soutenance:
En raison de l’épidémie du coronavirus, cette défense de thèse se fera en visioconférence via Zoom. Le lien public pour accéder à la défense est :
Aziz Diaby, le président fraichement élu de l’Association ivoirienne d’Astronomie (AIA) est chercheur en physique spatiale et enseignant de physique-chimie. Il vient d’être interviewé par Eliezer Rodemi pour parler de son parcours de sa toute nouvelle association, née à l’université Félix Houphouët à Abidjan-Cocody, et de sa passion pour la recherche et l’astronomie.
Africa Initiative for Planetary and Space Sciences 