A common question I've been asked over the years is, "Where does space begin?"
The International Astronomical Union (IAU), the standard most of the world recognizes, says it's at 100 km (62 miles).
When the #SpaceX #Starship began entry, the camera on the grid fin showed a red plasma glow begin at an altitude of 100 km!
That was pretty cool. Thank you, science.
I am a long-time advocate of space exploration, settlement and commerce. Migrated from @WordsmithFL on Twitter.