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  2. The oldest mature cluster of galaxies

    Source:

    • Sciences et techniques

    Publishing date:

    November 3, 2011

    Astronomer working on data from various observatories including XMM-NEWTON discovered the oldest mature cluster of galaxies.

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  3. Cassini: Destination Moons

    Publishing date:

    September 6, 2017

    In the space of 13 years, Cassini observed Saturn and devoted a lot of attention to its moons. With the mission now about to end, Patrick Michel, astrophysicist, planetologist and research director at the Côte d’Azur Observatory in Nice, reflects on the discoveries it has made about the planet’s natural satellites.

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  4. QUE DE LUNES !

    Publishing date:

    May 14, 2020

    Notre Lune n’est pas le seul satellite naturel du système solaire. Certaines planètes comme Saturne et Jupiter en possèdent des dizaines ! Pourquoi ont-elles cette forme ? Comment interagissent-elles avec leur planète ? Pourraient-elles abriter de la vie ? Des missions, comme les projets MMX (JAXA - DLR/CNES) vers les lunes de Mars ou JUICE (ESA) vers Jupiter, visent à lever ces mystères.

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  5. Huygens- Landing on Titan

    Publishing date:

    September 11, 2017

    In December 2004, the U.S. Cassini spacecraft released the European Huygens module for the most-distant landing yet accomplished in the history of space exploration. Titan, Saturn’s largest moon, was the target and the high point of this collaboration that has brought great discoveries in planetology. With the Cassini mission now set to end, Athéna Coustenis, research director at the LESIA space and astrophysics instrumentation research laboratory at the Paris Observatory, looks at what it found there.

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  6. Cassini-Huygens: a 30-year space odyssey

    Publishing date:

    August 30, 2017

    Cassini-Huygens is a joint NASA-ESA mission to Saturn and its moons. As the mission prepares to take its curtain call, Christophe Sotin, Chief Scientist, Solar System Exploration at the Jet Propulsion Laboratory (JPL) in Pasadena, looks back at the genesis of the project.

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  7. Cassini reveals giant dust storms on Titan

    Publishing date:

    October 5, 2018

    These giant dust storms seen at the equator on Titan rise as far as 10 kilometres above the surface. Mars and Earth are no longer the only worlds in the solar system where such phenomena are known to occur. We put three questions to Sébastien Rodriguez, a planetologist at the IPGP global physics institute in Paris and lead author of this discovery published in the journal Nature Geoscience on 24 September.

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  8. Cassini-Huygens mission- Titan one year on

    Publishing date:

    January 10, 2006

    Cassini-Huygens is the 1st space mission dedicated to exploring Saturn and its system of rings and moons. One year ago today, Europe’s Huygens probe separated from the Cassini orbiter and landed on Titan, Saturn’s largest moon. What have its findings taught us about this tantalizing new world?

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  10. Huygens set for the big jump

    Publishing date:

    December 16, 2004

    Six months after the arrival of Cassini-Huygens at Saturn, mission scientists are gearing up for a new phase. Like a Christmas present tumbling from Santa’s sleigh, the European Huygens probe will be cut loose from the orbiter on 25 December, before diving into Titan’s atmosphere 3 weeks later. Huygens is expected to improve our understanding of Saturn’s largest moon, the only one in the Solar System known to have a dense atmosphere containing organic molecules.

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  11. 2009: cloudy weather on Titan

    Source:

    • Sciences et techniques

    Publishing date:

    June 3, 2009

    Titan, Saturn’s biggest moon, is the only body in the Solar System -apart from Earth- to have a thick atmosphere. Nonetheless, the Cassini probe discovered clouds in it. These atypical clouds, made of droplets of methane and ethane, are closely studied by “transplanetary meteorologists” who try to unravel the mystery behind their formation and their spatial distribution

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  12. Seasons shift on Titan

    Publishing date:

    December 11, 2012

    While the seasons are a familiar feature of Earth, those on Titan are largely unknown. A team of researchers has obtained a tantalizing glimpse of a seasonal shift on Saturn’s moon thanks to data from the Cassini spacecraft.

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  13. Les lacs-fantômes de Titan, témoins de variations saisonnières

    Publishing date:

    June 3, 2019

    Titan possède des centaines de lacs remplis principalement de méthane et d’éthane liquides dont la géomorphologie et l'histoire diffèrent. Certains, aussi larges qu’une mer, peuvent atteindre une centaine de mètres de profondeur alors que d'autres sont assez petits et peu profonds pour complètement disparaître avec l'arrivée du printemps. C'est le résultat d'une étude publiée dans Nature en décembre 2018. Elle renforce l'idée selon laquelle les lacs pourraient servir de marqueurs des évolutions climatiques.

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  14. Saturn

    Publishing date:

    August 6, 2003

    Long thought to be the only planet with a ring system, Saturn is a gas giant much like Jupiter:

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  15. Cassini-Huygens: retour sur 30 ans d’histoire spatiale

    Publishing date:

    August 30, 2017

    Cassini-Huygens est une double mission NASA-ESA à destination de Saturne et de ses lunes. A l’occasion de la fin de la mission, Christophe Sotin revient sur ce qui a inspiré ce projet, en tant que directeur scientifique pour l’exploration du Système solaire au JPL (Jet Propulsion Laboratory) de Pasadena.

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  16. [Vidéo] Cassini: des découvertes inattendues

    Publishing date:

    September 12, 2017
    Cassini : des découvertes inattendues

    Des lacs de méthane, un hexagone de gaz autour du pôle Nord, des lunes aux formes étranges… C’est un monde presque surnaturel qui s’est révélé grâce à la sonde CASSINI, qui a orbité autour de Saturne entre 2004 et 2017...

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  17. Huygens: an emotional first encounter with Titan

    Publishing date:

    January 17, 2005

    Friday evening, in Paris, a crowd of more than 2,000 filed into the auditorium at the Cité des Sciences et de l’Industrie to witness the arrival of the Huygens probe on Titan. Huygens had already successfully landed at its destination earlier in the day. Now, everybody was eagerly awaiting the first sights and sounds from this distant world over 1 billion km from Earth. One of the first images taken by Huygens. Titan’s surface is darker than scientists expected and is likely a mixture of water ice and hydrocarbons. Crédits : ESA/NASA/University of Arizona

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  19. Huygens, le choc de Titan

    Publishing date:

    September 11, 2017

    En décembre 2004, la sonde américaine Cassini envoyait le module européen Huygens vers le sol le plus lointain jamais atteint par l’exploration spatiale. Titan, la plus grande lune de Saturne, a été le point d’orgue de cette collaboration qui a amené à de grandes découvertes en planétologie. À l’occasion de la fin de mission de Cassini, retournons sur Titan avec Athéna Coustenis, directrice de recherche CNRS au LESIA, à l’Observatoire de Paris.

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  20. Saturne

    Publishing date:

    April 4, 2009

    Saturne a longtemps été connue comme la seule planète possédant un système d'anneaux.

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