3 ms·

The nuclear launched manhole cover is likely further

• cyberlurker 2y ago
  I think that burned up before exiting our atmosphere.
  • cdelsolar 2y ago
    I'm not sure about that. At its launch speed (lower limit 66 km/s) it would have taken under a second to get to where the atmosphere is no longer thick enough.. would that have been enough time to vaporize it?
    • bgirard 2y ago
      It's the other way around. Regardless of speed, it has the same number of particles to displace. At high speed these particles you're hitting are like hitting a concrete wall. The faster you go, the worse it is, and the less time you have to cool down the heat you're generating.
• ornornor 2y ago
  Which one is that?