Who are Maa Durga’s nine avatars worshipped in Navratri?

Nine avatars of Maa Durga are worshipped during Navratri festival. The avatars are Maa Shailputri, Maa Brahmacharini, Maa Chandraghanta, Maa Kushmanda, Maa Skandamata, Maa Katyayani, Maa Kalaratri, Maa Mahagauri and Maa Siddhidatri. These nine forms of Adi Shakti are known as Navadurga. Navratri marks Maa Durga's victory of the Goddess over the demon Mahishasura.