• DE QUOI LES PRIMAIRES SONT-ELLES LE NOM ? - INITIATIVE COMMUNISTE
    http://www.initiative-communiste.fr/articles/prcf/de-quoi-primaires-nom

    Brecht disait : « Puisque le peuple vote contre le Gouvernement, il faut dissoudre le peuple. »

    Mais, allez-vous dire, c’est exactement le contraire que proclament les initiateurs des ces primaires !

    Ce serait oublier la grande leçon de ce début de siècle : dans la novlangue néolibérale actuelle, les mots veulent dire le contraire de ce qu’il sont censés signifier. Réforme veut dire régression. Courage politique veut dire lâcheté face aux lobbys du grand capital. Gouvernance (entrepreneuriale, gestionnaire et apolitique…) prend la place de gouvernement du peuple. Pédagogie nécessaire pour montrer que le peuple, ignorant et fruste, doit être éduqué par ses bons maîtres. Syndicat réformiste veut dire « jaune » comme Berger qui soutient des CONTRE-réformes. Coût du travail pour faire oublier que le travail produit et que le capital prélève. La Dette (affreuse) qu’il faut rembourser s’élève à 70 milliards d’euros en 2015 et le montant de la fraude fiscale s’élève à 80 milliards d’euros* auxquels aucun gouvernement ne touchera sérieusement puisque ces gouvernements truffés de Cameron et de Cahuzac sont des gouvernements des riches par les riches et pour les riches.

    Mais revenons aux Primaires.

    SUFFRAGE CENSITAIRE, LE RETOUR

    La première question que l’on doit se poser est qui vote aux primaires ?

    L’Institut CSA nous donne la réponse (tous les sondages sont unanimes) : » Les primaires n’ont pas permis d’atténuer les discriminations à l’œuvre dans le processus électoral. La mise en correspondance des taux de participation avec les caractéristiques sociologiques atteste que la participation aux primaires est d’autant plus élevée que le niveau social est élevé. Plus il y a concentration de catégories populaires, plus le taux de participation est faible. Il y a une relation évidente entre le poids des ménages issus des catégories populaires et la non-participation aux primaires. Cela confirme l’éloignement entre le PS (pour les primaires du parti socialiste) et les catégories populaires. » Quand on sait que 64% des militants du PS sont diplômés de l’enseignement supérieur (contre 14% dans la société dans son ensemble), on comprend où est la cible du PS. Et l’on voit bien en effet que les primaires non seulement n’amènent pas les abstentionnistes ou les déçus de la politique des gouvernements, c’est-à-dire les classes populaires, à réintégrer le jeu politique mais au contraire les en éloignent de fait.

    C’est là une donnée que les états-majors des partis bourgeois (LR et PS) n’ignorent pas.

    Au lieu de regretter ce fait, ils en sont fort satisfaits : le peuple, les ouvriers, les couches populaires sont hors-jeu et cela est conforme aux intérêts de classe des ces mêmes états-majors et de ceux qu’ils servent.

    • Oui de plus en plus ce parti réellement « communiste » a grand raison, ce vote est étrange, payer un euro mais qui peux voter ? Combien d’exclus ? espérons que cette comédie ne va pas durer c’est encore plus injuste que l’ancien modèle français. Qu’est-ce qui leur a pris de changer la façon croyaient ils gagner plus de voix ? L’abstention est le plus grand parti de France, c’’est minable de s’en tenir à ce mode à l’américaine qui évacuent des millions de votants.

    • Est-ce prendre le risque de passer soi-même pour un primaire, voire pour un primitif, que de rappeler aux militants du mouvement populaire que le véritable engagement civique a aujourd’hui pour théâtre principal les mobilisations populaires, les manifs de lutte, les grèves, le blocage des profits capitalistes, la contestation radicale de la « construction » européenne néolibérale, de l’OTAN belliciste et du capitalisme prédateur ? Comme le clame un slogan des manifestations lilloises qu’ont lancé des militants du PRCF lors des luttes de 2003, « c’est pas au patronat de faire la loi / la vraie démocratie, elle est ici ! » ?

      #Primaires #illusion_démocratique #manoeuvre_idéologique #lutte_des_classes

  • #Rosetta’s complete journey – #animation
    http://blogs.esa.int/rosetta/2016/12/23/rosettas-complete-journey-animation

    Now in one complete animation: #rosetta’s #trajectory around #Comet_67P/Churyumov–Gerasimenko, from arrival to mission end. The animation begins on 31 July 2014, during Rosetta’s final approach to the comet after its ten-year journey through space. The spacecraft arrived at a distance of 100 km on 6 August, from where it gradually approached the comet and entered initial mapping orbits that were needed to select a #Landing site for Philae. These observations also enabled the first comet science of the mission. The manoeuvres in the lead up to, during and after Philae’s release on 12 November are seen, before Rosetta settled into longer-term science orbits. In February and March 2015 the spacecraft made several flybys. One of the closest triggered a ‘safe mode’ that forced it to retreat (...)

    #Fun_stuff #Operations #video ##CometLanding #flyby #manoeuvre

  • #Rosetta in numbers
    http://blogs.esa.int/rosetta/2016/09/27/rosetta-in-numbers

    Some impressive numbers from #rosetta's mission. Click for full res! Summary Rosetta’s mission lasted 12 years 6 months and 28 days, from launch on 2 March 2004 to mission end on 30 September 2016. During that time, the spacecraft travelled some 7.9 billion km, including three gravity assist flybys at Earth and one at Mars, and two asteroid flybys. Travelling from Earth and eventually out towards the orbit of Jupiter, the vast distance between the spacecraft and the Sun, and spacecraft and Earth, has impacted on available solar power and data downlink capabilities respectively, as detailed in the graphic. The majority of remaining figures shown apply to Rosetta’s time at Comet 67P/Churyumov-Gerasimenko, between 6 August 2014 and the end of September 2016, although navigation camera images (...)

    #Fun_stuff #Operations #Outreach #Science ##LivingWithAComet #ground-based_observations #manoeuvre #science

  • #Rosetta’s final orbits – animation
    http://blogs.esa.int/rosetta/2016/09/22/rosettas-final-orbits-animation

    This new animation visualises Rosetta’s last two months of trajectories around Comet 67P/Churyumov-Gerasimenko. The animation begins in early August, when the spacecraft started flying elliptical orbits that brought it progressively closer to the comet at its closest approach. On 24 September, #rosetta will leave its current close, flyover orbits and transfer into the start of a 16 x 23 km orbit that will be used to prepare and line up for the final descent. On the evening of 29 September (20:50 GMT) Rosetta will #manoeuvre onto a collision course with the comet, beginning the descent from an altitude of 19 km. The spacecraft will fall freely, without further manoeuvres, collecting scientific data during the descent. The animation below highlights this final set of manoeuvres and the (...)

    #Landing #Operations ##CometLanding #flyby #trajectory

  • #Rosetta finale set for 30 September
    http://blogs.esa.int/rosetta/2016/06/30/rosetta-finale-set-for-30-september

    This article is mirrored from the ESA Web Portal. #rosetta is set to complete its mission in a controlled descent to the surface of its comet on 30 September. The mission is coming to an end as a result of the spacecraft’s ever-increasing distance from the Sun and Earth. It is heading out towards the orbit of Jupiter, resulting in significantly reduced solar power to operate the craft and its #Instruments, and a reduction in bandwidth available to downlink scientific data. Combined with an ageing spacecraft and payload that have endured the harsh environment of space for over 12 years – not least two years close to a dusty comet – this means that Rosetta is reaching the end of its natural life. Unlike in 2011, when Rosetta was put into a 31-month hibernation for the most distant part of (...)

    #Comet_67P #Images #Landing #Operations #Science ##CometLanding #esoc #instruments #landing #manoeuvre #science #trajectory

    • Rosetta’s operators will begin changing the trajectory in August ahead of the grand finale such that a series of elliptical orbits will take it progressively nearer to the comet at its closest point.

      Planning this phase is in fact far more complex than it was for Philae’s landing,” says Sylvain Lodiot, ESA Rosetta spacecraft operations manager. “The last six weeks will be particularly challenging as we fly eccentric orbits around the comet – in many ways this will be even riskier than the final descent itself.

      The closer we get to the comet, the more influence its non-uniform gravity will have, requiring us to have more control on the trajectory, and therefore more manoeuvres – our planning cycles will have to be executed on much shorter timescales.

      A number of dedicated manoeuvres in the closing days of the mission will conclude with one final trajectory change at a distance of around 20 km about 12 hours before impact, to put the spacecraft on its final descent.

      The region to be targeted for Rosetta’s impact is still under discussion, as spacecraft operators and scientists examine the various trade-offs involved, with several different trajectories being examined.

      Broadly speaking, however, it is expected that impact will take place at about 50 cm/s, roughly half the landing speed of Philae in November 2014.

  • From one comet #Landing to another: planning #Rosetta’s grand finale
    http://blogs.esa.int/rosetta/2015/11/12/from-one-comet-landing-to-another-planning-rosettas-grand-finale

    As announced in June along with confirmation of the mission’s extension, #rosetta teams are planning to end the operational phase of the mission in a controlled impact of the orbiter on the surface of Comet 67P/Churyumov-Gerasimenko at the end of September 2016. While the specific details of the trajectories and impact site are still under discussion, ESA’s Rosetta Spacecraft #Operations Manager Sylvain Lodiot, Project Scientist Matt Taylor, and mission manager Patrick Martin, share some background information on the planning of this dramatic mission finale. Why will the mission come to an end? Following perihelion in August, Comet 67P/C-G and Rosetta are now moving away from the Sun and back out towards the orbit of Jupiter. This creates a number of challenges: Reduced solar power As the (...)

    #Instruments ##CometLanding #manoeuvre #timeline #trajectory

  • New trajectories for #Rosetta
    http://blogs.esa.int/rosetta/2015/04/10/new-trajectories-for-rosetta

    Rosetta continues to recover well from the problems experienced during the close flyby over the weekend of 28 March that resulted in the spacecraft entering safe mode. Some of the #science #Instruments are now switched back on again, and more will follow in the coming week. As a result of the safe mode, #rosetta moved onto an ‘escape #trajectory’ taking it approximately 400 km from #Comet_67P/C-G. An orbital correction #manoeuvre was executed on 1 April to start to bring the spacecraft back again, and with a second manoeuvre executed on 4 April, the target distance of 140 km was reached on 8 April. But the previous difficulties in navigation mean that the #Operations team needs to be cautious while bringing the spacecraft even closer. In particular, they will need to assess the behaviour of (...)

    #instruments #orbit

    • But the previous difficulties in navigation mean that the operations team needs to be cautious while bringing the spacecraft even closer. In particular, they will need to assess the behaviour of the spacecraft’s star trackers in the environment of the increasingly active comet, since the previous navigation issues resulted from the star trackers becoming confused by comet particles.

  • #Rosetta status report : close #flyby navigation issues
    http://blogs.esa.int/rosetta/2015/04/01/rosetta-status-report-close-flyby-navigation-issues

    During its most recent close flyby last Saturday, where #rosetta flew within 14 km of the surface of the #comet, the spacecraft experienced significant difficulties in navigation. This resulted in its high gain antenna starting to drift away from pointing at the Earth, impacting communications, and was subsequently followed by a ‘safe mode’ event. The spacecraft has now been successfully recovered, but it will take a little longer to resume normal scientific #Operations. Here is the full report from the mission team: Rosetta has been flying a series of flyby trajectories around #Comet_67P/C-G since February, allowing the spacecraft to collect scientific data from a range of distances. Its closest flyby to date took it just 6 km from the surface of the comet – over the Imhotep region on the (...)

    #Instruments #manoeuvre #trajectory

  • #Rosetta #Science Working Team meeting report
    http://blogs.esa.int/rosetta/2015/03/18/rosetta-science-working-team-meeting-report

    US #rosetta Project Scientist Claudia Alexander and ESA’s Rosetta Project Scientist Matt Taylor report on the discussions held at the recent Rosetta #science Working Team meeting. The Rosetta Science Working Team (SWT) met for the 40th time earlier this month, this time at ESTEC in Noordwijk, Netherlands. This meeting was attended by principal investigators and co-investigators of the #Instruments and other researchers but also science #Operations personnel and staff from the mission operations team. This week the main topics discussed were the science of the mission so far, science operations and new trajectories going forward, and updates on the state of the health of the experiments and the spacecraft. Compared to our predictions and expectations, the activity of the comet is slightly (...)

    #Comet_67P #instruments #manoeuvre #trajectory

    • Observing 67P/C-G from Earth
      As part of the SWT week, splinter workshops included that of the ground-based observing campaign, let by Colin Snodgrass, a UK cometary scientist at the Open University who leads (along with colleagues at ESO) the professional ground based campaign group (http://www.rosetta-campaign.net). Both amateurs and professionals are welcome to the meeting. The comet is currently behind the Sun, and will not be visible to professional ground-based observers until about June 2015 (just before perihelion). It is the hope that amateur astronomers will be able to observe the comet starting in the April-May timeframe. The US Rosetta Project manages the amateur ground-based observing program on behalf of the project. A new website is being designed, with a welcome page for amateur astronomers who are interested in participating in this exciting campaign. Web pages will soon be introduced at the JPL Rosetta web site, and a form for amateurs to fill out to register for the program. Instructions for how amateurs can upload (FITS Format) pictures will be included in a hand-book at that time.

  • Last stop before close flyby – #CometWatch 9 February
    http://blogs.esa.int/rosetta/2015/02/13/last-stop-before-close-flyby-cometwatch-9-february

    Today’s CometWatch entry is a single frame #navcam image taken on 9 February from a distance of 105 km from the #comet centre. The image resolution is 8.9 m/pixel; the processed image below has been slightly cropped to eliminate vignetting in the upper corners, and measures 8.5 x 8.5 km (the original, provided at the end of the post, measures 9.1 x 9.1 km). In this orientation, the comet’s small lobe is the foreground and the large lobe is in the background. Particularly stunning is the delicate, ethereal glow of activity that contrasts against the shadowed region between the two lobes. From this viewing position the outflowing material seems to take the shape of a broader fan, rather than the more collimated jet-like features seen at other angles. As seen in previous #Images, the sharp (...)

    #Comet_67P #Rosetta #manoeuvre #rosetta

  • #Rosetta in 2015
    http://blogs.esa.int/rosetta/2015/01/06/rosetta-in-2015

    Before the Christmas break we left you with a bounty of #comet #Images to create a movie – if you took on the challenge, do post links to your videos on the relevant post: #CometWatch – the movie. We are looking forward to seeing your mosaics and movies! We were also keeping our ear to the ground for an update on the whereabouts of #Philae, but attempts to identify the lander in high-resolution OSIRIS images acquired from a distance of 20 km have reportedly not yet been successful. (Note, the link is to a German news story in which OSIRIS PI Holger Sierks told the Göttinger Tageblatt “We have still not discovered the lander.”) The scientists continue to scour the images for confirmation of the landing site. #rosetta is now orbiting #Comet_67P/C-G at a distance of about 30 km. The images included (...)

    #Operations #Science #manoeuvre #navcam #philae #science #trajectory