A unique NASA satellite is falling out of orbit—this team is trying to rescue it

A unique NASA satellite, crippled and tumbling, faces an uncontrolled reentry unless a dedicated team can pull off a risky orbital rescue. With only a 15% success probability estimated for the current intervention plan, this story earns its high rank by blending real-time engineering drama with the sobering reality that even our best technology can fail. The rescue's cost of $2.1 million is significantly cheaper than the typical $50 million replacement satellite, yet the outcome remains uncertain.