Rebel Alien Mission

Where are the aliens in the rebel alien mission. I've searched every system remotely close to the asteroid belt twice and found nothing! Please help me!

The first time (when you have to find them-not attack them) they are in Castor.

The second time (when you gotta destory them) they are in Gamera.

It's funny how people running for president spend $60 Million for a $175,000 a year job.
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