User blog comment:Thailog/Ep. 206 "Bloodlines" discussion/@comment-5172330-20120606195219/@comment-175.143.168.187-20120608223410

My guess is an alien alliance consisting of the dominators,psions,thanagarians,khunds, daxamites,citadelians,vgil'Dishpans,the warlocks of okaara and possibly the reach invaded Earth, used some kind of power amplifier on metahumans like Neutron causing them to lose control of his powers and start destroying the city.

They went at war with the superheroes and then detonated a gene bomb on earth causing all metahumans on earth to lose control of their superpowers, creating the bad future seen in 40 years later. Future Neutron sends Impulse back in time to prevent the invasion but he only succeeds in depowering past neutron.