10 Things You Learn Rewatching Stargate SG-1

In the very first episodes of SG-1, the team is aware of how to use the Stargate and they have a list of potential addresses that they can visit. As the series progresses, the team recovers more and more advanced or alien technology, as well as resources and allies. While many of these remain underdeveloped, the ones that stick have a real effect over the rest of the series.

For example, in the two-parter that forms the end of season 1 and the start of season 2 sees SG-1 and Bra'tac descend to Earth in a pair of Goa'uld Death Gliders. In the season 4 episode 'Tangent', the US Air Force has attempted to retro-fit one of the Death Gliders into the X-301, an experimental space fighter. That one didn't pan out too well for Jack and Teal'c, but lessons were learned.

Later on, in the season 6 opening episode 'Redemption', we see the X-302, an upgraded version that doesn't feature any Goa'uld parts, but is mostly modelled on their designs. Again it didn't function great, but allowed for the production of the F-302, the stable version later on. Of course, at the same time as the X-302, there was also the development of the X-303, also known as Prometheus.

While Earth would later go on to have a devastatingly powerful fleet of BC-304's (the Odyssey, the Daedalus, the Apollo and the George Hammond) , it all began when SG-1 recovered two Death Gliders at the beginning of Season 2.