related_tweet: i can't really feel it until i can hear it.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  how does our martian helicopter sound when hopping up into a 1% atmosphere? what is the sound of the tires crunching martian soil? why can't nasa share the audio with the video of their mars flights? #marshelicopter @nasamars @nasaearth