Incredibly cool, like detecting motion in a house with wifi. Very sharp. Stealth appears dead with Starlink type constellations acting as baseline radiation emitters (assuming passive ground radar capabilities). Perhaps this speeds development of the SR-72 ("Son of Blackbird").

The Chinese have said they have radar that can detect stealth aircraft as well. As the Airforce replies, "there is a big difference between knowing we are there and being able to get a missile lock, at which point I've already seen you"