long range observation

  1. Wiggles

    Measuring the radius of Earth using Long Range Observations (LROs)

    I know Mick has said this is possible. There may be other threads here on how to do this (and my way is just one way) but couldn't find any (although here is an example of using LROs to observe the fact of curvature without getting a radius value for Earth.) I'll get right to it, this image has...