Space.com has a great look at how military and civilian satellites are teaming up to track fireballs, and why it matters for planetary defense.
Examples
- April 1: a bolide exploded over the South Atlantic off Argentina. US government sensors caught it peaking at about 60 miles up, and so did the lightning imagers on NOAA’s GOES-East and Europe’s MTG-I1 in geostationary orbit
- April 24, 2025: a fireball over south-central Alaska produced one of the densest seismoacoustic datasets ever: 37 seismic stations, 16 infrasound sensors, four arrays, plus Doppler radar of falling meteorites
- May 20, 2023: a roughly 12-foot rock broke up over northwest Queensland with sonic booms, one of the 20 most energetic events in NASA CNEOS records
As one researcher puts it, planetary defense “is also about understanding what happens during atmospheric entry.”
My take
I love seeing different sensors combined to understand one event. It helps with space debris reentries too.
God Bless, and May the Source Be with You!
