[gurps] Stealthy shuttles

[Onno Meyer]

Anthony replied to Zan:

> > You are absolutely certain that a hyperbolic solar orbit with aphelion
> > preceding Earth so that Earth captures it at its slowest point would
> > always exceed LEO?
> 
> For Earth, and assuming we're talking about something that actually ends 
> up at an altitude adequate to do a re-entry, yes.

* Escape velocity exceeds orbital velocity.
* Approaching Earth from solar orbit is the reverse of escaping Earth into 
  solar orbit. On the way out, you have to overcome gravity, on the way 
  in you gain the same amount.