ArianeGroup on Twitter: "For the recent #VA245 flight to explore #Mercury, we needed to fly fast enough to escape the Earth's attraction, but slower than this 👇🏻 Do you know what that's called?… https://t.co/9WapjjWCg0"

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1. Layth Music‏ @layth_music 30 Oct 2018
  Replying to @ArianeGroup
  
  You do not precise what is a, but I suppose it is the Escape velocity ?
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1. STYLES‏ @styles_Ariane5 30 Oct 2018
  Replying to @ArianeGroup
  
  Vous êtes des génies
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1. Nuno Hipólito‏ @nunohipolito 30 Oct 2018
  Replying to @ArianeGroup
  
  It's a fraction
  
  2 likes
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1. Krishna R‏ @KrishnaR_Sci 30 Oct 2018
  Replying to @ArianeGroup
  
  Escape velocity
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1. Harry‏ @Harryt0708 30 Oct 2018
  Replying to @ArianeGroup
  
  Formulae for the escape velocity to avoid the gravitational pull from Mercury.
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1. Florian Sachse‏ @SachseFlorian 31 Oct 2018
  Replying to @ArianeGroup
  
  Second cosmic velocity
  
  2 likes
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1. planetarychakra‏ @planetarychakra 3 Nov 2018
  Replying to @ArianeGroup
  
  Je ne connais pas le reste des autres facteurs de cette équation, mais certainement que "a" représente les attractions de .@ArianaGrande sur cette planète.
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1. Antonio Brasileiro‏ @tonyoakfields 17 Nov 2018
  Replying to @ArianeGroup
  
  Is this the translation speed of Earth around the Sun? Pretty sure you need a lower speed relative to the Sun so you can have a orbit smaller then Earth's. This speed have to be slow enough to decay the orbit closer to Mercury's small gravity field capture. Which is hard!
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