All Things Space, UFOs, etc.NASA unexpectedly finds ‘X-shaped structures’ in Earth’s upper atmosphere, which they can’t fully explain Posted on June 19, 2025 by Administrator Signals from navigation satellites, radio broadcasts, and distant spacecraft all squeeze through a thin, electrified veil in Earth’s atmosphere called the ionosphere. Stretching from about 50 miles to nearly 400 miles up, this region bristles with charged particles set loose by daylight.
