HAARP antenna array attempts to look inside a passing asteroid with radio waves
The goal of the experiment was to learn about the interior of the asteroid, which could one day help design an effective Earth-saving mission in case a space rock were to intersect our planet's path.
TroibNews 
The goal of the experiment was to learn about the interior of the asteroid, which could one day help design an effective Earth-saving mission in case a space rock were to intersect our planet's path.
