comment: >
  
  How would you judge the size? It’d be impossible to know if it’s a small object at relatively close or a larger object further away. 
  I’ve seen similar experiments where people guess birds wingspans from the ground. At the height of a flagpole, with the flagpole in view they’re relatively accurate. Once there is no flag pole and the distance is random it became impossible.
context: I’m pretty sure the only reason we knew about this one is because people saw it.
  Edit: ima stop replying to ppl in this thread and just put a general comment here. Stop acting like if you saw a giant ass balloon in the sky you wouldn’t be curious or concerned at all. >
  
  How would people seeing it, know its a Chinese Spy Balloon, that info had to come from somewhere, I feel moderatly intelligent people who see a big balloon in the sky (See it in the sky, is kind of loaded, it would probably be very hard to tell what it is without binoculars looking right at it) would just assume its a weather balloon. >
  
  From my understanding this balloon is far larger than weather balloons and also stayed in the air much longer, weather balloons are only in the sky for a couple hours before they pop.