[s1e12] The Defiant One -

: The planet features yellow, firefly-like energy beings similar to those seen in the Stargate SG-1 episode "Prodigy".

: The episode is the first to explicitly identify the Ancients as the "Lanteans" . [S1E12] The Defiant One

: The Ancient satellite discovered is roughly the size of a Goa'uld Mother Ship. Main Cast Joe Flanigan Major John Sheppard David Hewlett Dr. Rodney McKay Christopher Heyerdahl The Wraith Survivor Richard Ian Cox Dr. Brendan Gall Boyd Banks Dr. Abrams : The planet features yellow, firefly-like energy beings

You can find more detailed credits and episode synopses on platforms like IMDb or the SGCommand Wiki. : The planet features yellow

: This episode is noted for Dr. McKay's growth; he chooses to join the fight alongside Sheppard rather than staying in safety.