Martian Golden Age

From Tardis Wiki, the free Doctor Who reference

The Martian Golden Age was the term given by the Twelfth Doctor to an era that "might" have begun in 1881 when, on behalf of the Ice Warriors, he sent a signal which was answered by Alpha Centauri, who offered to help the Empress Iraxxa off her desolated home planet Mars, welcoming her race to the universe. (TV: Empress of Mars)