Hold The Line Sol

During the last century humans migrated from their home planet and colonized Mars, Neptune, Uranus, IO, and Europa.  Advancements in physics and quantum mechanics allowed these colonies and created the fighter you are using today.  Humans thought they were alone in the universe until alien probes started entering the Sol defense zone.  We sent a scout ship out to establish diplomatic relations with the unknown beings.  The ship was destroyed shortly after leaving the Sol ort cloud.  A single message was sent that stated one word “Invasion”.   At this time long range sensors have picked up a massive armada entering the outer solar system.  We do not know what the enemy is capable of but expect there to be a massive gap in technology.  We do know that our concussive rockets will do damage and are unsure on phasors.