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  1. Operational management of Collision Risks

    Date de publication:

    6 Janvier 2020
  2. CNES keeps a lookout for collisions in space

    Date de publication:

    19 Février 2009

    Last week’s collision between the Kosmos and Iridium satellites was an exceptionally rare event. But with the growing field of orbital debris now encircling the planet, the ability to predict and avert such occurrences is today a key issue. CNES is at the forefront of efforts in this respect, keeping a constant watch over 15 satellites in low-Earth orbit and performing collision-avoidance manoeuvres when necessary.

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  3. CNES wins award for satellite collision risk management

    Date de publication:

    23 Juin 2008

    16 May, CNES engineer François Laporte, based at the Toulouse Space Centre, won the Best Paper of Symposium award at Space Ops 2008 for his contribution on operational management of collision risks for CNES satellites in low-Earth orbit.

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  4. SpaceBlower: a rocket to combat space debris

    Date de publication:

    8 Octobre 2020

    SpaceBlower is a light suborbital rocket designed to eject a cloud of particles into the path of large non-manoeuvrable space debris. Its goal is to avoid collisions likely to generate thousands more debris fragments and thus to keep satellites and their orbits safe. Space Blower is a preliminary project initiated and funded by CNES and its partner Bertin Technologies (now CT France). Christophe Bonnal, senior expert at CNES’s Launch Vehicles Directorate, outlines what this project is aiming to accomplish.

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  5. Introduction

    Date de publication:

    3 Janvier 2020

    Paradoxically, the “empty space” surrounding the Earth is filled with a large number of objects which, owing to their very high velocity, represent a collision risk for space missions that cannot be ignored. These objects also represent a risk on Earth itself, in the event of pieces falling to the ground.

  6. CNES AT THE PARIS PEACE FORUM

    Date de publication:

    13 Novembre 2020

    The third edition of the Paris Peace Forum from 11 to 13 November was held in a virtual format with a unique platform designed to replicate the physical experience. At the session on “Improving Space Safety: the Multi-Actors Option”, CNES President Jean-Yves Le Gall spoke after the introductory marks from Simonetta Di Pippo, President of the United Nations Office for Outer Space Affairs (UNOOSA).

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  7. Probe – Instruments

    Date de publication:

    29 Octobre 2020

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  8. Mission

    Date de publication:

    29 Octobre 2020

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  9. The birth of stars is not a matter of cosmic billiard

    Source:

    • Sciences et techniques

    Date de publication:

    14 Septembre 2011

    The observations performed with the ESA's Herschel space telescope showed that collisions between galaxies only play a secondary role in the birth process of the stars.

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  10. Solutions

    Date de publication:

    6 Janvier 2020

    Reducing the risks from space debris, on the ground and in orbit, entails a reduction in the amount of debris and the design of space objects made of materials unable to withstand the thermomechanical stresses linked to atmospheric re-entry.

  11. In Orbit Risks

    Date de publication:

    6 Janvier 2020
  12. Growth of the Orbital Population

    Date de publication:

    6 Janvier 2020
  13. Risks

    Date de publication:

    6 Janvier 2020

    Space debris constitutes a threat to property and human life, both in orbit and on the ground.

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  15. Ground Based Assets

    Date de publication:

    12 Février 2020

    The American and Russian operational surveillance systems are presented in brief. Many countries have ground-based means and some have orbital resources. The list is lengthy, so this page will only present the French resources, in particular those of CNES.

  16. Observation Means

    Date de publication:

    3 Janvier 2020
  17. Deep Impact puts on a deep space firework show for Independence Day

    Date de publication:

    5 Juillet 2005

    Yesterday morning, the impactor released by NASA’s Deep Impact spacecraft smashed into its target comet Tempel 1, 6 months after launch. The spectacular, high-speed collision is a 1st in space exploration: Deep Impact’s goal is to provide a glimpse beneath the surface of a comet and unlock the secrets inside. In Europe, the Rosetta mission is on course to rendezvous with another comet, via a different route.

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  20. Gaia unveils ghost galaxy

    Date de publication:

    16 Novembre 2018

    The Gaia mission has uncovered a major event in the formation of our Milky Way galaxy, now thought to be the result of a merger with a smaller galaxy called Gaia-Enceladus. “This discovery completely changes our perception of galactic structures as we thought we knew them”, according to Carine Babusiaux, a research scientist at the IPAG planetology and astrophysics institute/OSUG, the Grenoble universe sciences observatory, in charge of simulations for the Gaia mission and co-author of a paper announcing the discovery in the journal Nature.

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