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Home> CNES projects library> Rosetta/Philae> For professionals> Frequently Asked Questions
November 7, 2014

Frequently Asked Questions

Questions about the Scientific Thematics

  • Why study comets?
  • What does a comet look like?
  • What is the difference between a comet, a shooting star and a meteorite?
  • What is the difference between a comet and an asteroid?
  • Do comets present a danger to the Earth?
  • Which are or were the main other cometary missions?

Questions about Rosetta mission

  • Why those names Rosetta and Philae (Lander name)?
  • What are the expected results?
  • Why is this mission so important for Europe?
  • What is the importance of the Lander for this mission?
  • What were the impacts of the launch delay from January 2003 to February 2004?
  • Why does the comet have this name?
  • Why choose this comet?
  • Why did the launch took place during a limited launch window?
  • Why is the journey so long?
  • How can you be sure that the spacecraft will still be active after 10 years?
  • Why is this mission difficult?
  • Which were the technical difficulties that had to be solved?
  • What happened after the launch?
  • What are the main activities in 2014?
  • How will the landing site be chosen?
  • How long is the Philae lifetime on the comet?

Questions about the cost - France and CNES Participation

  • How much did it cost?
  • What did France do? What did CNES do?
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Mission's news feed

  • Unique use of ESA spacecraft ‘housekeeping’ data reveals cosmic ray behaviour

    Using data originally gathered for spacecraft ‘housekeeping’ aboard ESA’s Rosetta and Mars Express missions, scientists have revealed how intense bursts of high-energy radiation,...

    June 28, 2021

  • Mapping the cosmic journey of phosphorus with Rosetta and ALMA

    Astronomers using the combined powers of ESA’s Rosetta mission and the ground-based Atacama Large Millimeter/submillimeter Array (ALMA) have traced the journey of phosphorus – one...

    February 3, 2020

  • CNES attends MEDEF summer school: “Think Even Bigger”

    August 30, 2017

All news about mission

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