Kronos: Ravager of Planets

[kentauros]

4. Thanks!

Although I'd like to watch Kronos for free, too
I'll see if it's on Netflix

Here's one I was just talking about with some friends last night: The Lost Missile

The plot is this "missile" is an alien craft with a nuclear drive (rocket) and it's leaking as well as out of control. It's also flying at 4000 mph, and low-altitude, the leaking radiation destroying everything under it and in its wake. There are links to the full movie with the trailer above. I've never seen it, but it appears to have also been a precursor to something the USAF and Atomic Energy Commission wanted to build, named Project Pluto. I'm very happy that project got canceled