The Cosmic Era is the fictional timeline of the anime television series Gundam SEED and its spinoff projects. This Gundam timeline is noted for its similarities with the Universal Century timeline started by the first Mobile Suit Gundam' series.
With Mobile Suit Gundam SEED Destiny, the Cosmic Era universe is the only other Gundam universe other than the Universal Century with multiple full-length TV series (though the AD timeline chose to split its 50 episode run into two seasons). Before that, the second most developed universe was Gundam Wing's After Colony universe, with one TV series, one OVA series and a compilation movie. The Universal Century universe remains by far the most developed one, with four TV series, four OVA series, fifteen theatrical releases, and various specials.