Some of these planets may be home to many anomalies, which may render colonization rather futile. Look for systems that have many habitable planets or that have a lot of resources.
More scout ships means more probes - from time to time, send out a fleet of 3 ships commanded by a hero.ģ. If you run out of options, send out probes to discover new constellations. Look for habitable systems that are reach with resources.
Exploration - looking for habitable planets and investigating anomalies should be your priority during the initial turns.