Ok, so I am trying to track down a plot line for a tv series or possibly episode. The earth is attacked by aliens using a Planet Killing weapon the encircles basically half of the planet, and drops kinetic bombs that penetrate in the core of the planet. The heroes defeat this weapon by destroying the interconnected nodes of the weapon, however while they are doing this, smaller attack vessels head to earth, and then spread a bio weapon, that ensures the death of the human race in 50 or so years. Amazing I can remember the plot but not the program. Of course I am over 60 so that might explain it. Anyway thanks in advance.
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