5 ms·

Just a note: I responded directly to a comment that said it could be built with today's tech, let alone 10, 20, or 50 years.

• Sharlin 2y ago
  Ah, yes, it was my own comment :D Sorry for the confusion. What I meant was that bog-standard chemical rockets work just fine for ~100 km/s if the payload mass is low enough and you use enough stages.
• Sharlin 2y ago
  But note that "within a decade" I meant "within a decade from launch".