Exploration guide:

# Cosmic Anomaly: Combat sites with NPC spawns, with the possibility of escalating to more difficult sites or a commander spawn.
# Gravimetric: Hidden asteroid belts. Mining sites containing ores of rarer types and/or larger asteroids than the belts native to that system.
# Magnetometric: Archaeology/Salvage profession sites.
# Radar: Hacking profession sites.
# Ladar: Gas Cloud sites for mining gas.