|Meteor in a Perseids shower, Wikipedia|
Meteors strike the Earth's atmosphere frequently, even in the absence of a big meteor "shower". They generate a trail of ionization that lasts up to a minute or so (at 50 MHz), which is sufficient to exchange a bit of information between ground stations that have mutual visibility -- up to about 1,300 miles.
|Strong meteor burst from N0TB in Minnesota displayed|
on FlexRadio FLEX-6500 SDR transceiver