All this data is potentially out of date, and should be taken with a truckload of salt
File:Core-probe.pngUse core-scan probes for exploration
File:Combat-probe.pngcombat-scanners for fleet/roam work
File:Deep-space-probe.pngdeep-space probes are used in combination to pick up signatures at extreme ranges.
Faction probes can also give you an additional bonus as well but are expensive for the new player.
Helios was a greek Titan (not that kind) and personification of the sun.
Below are additional ships images. Click the image below for a larger version: