Sarva Mangala Mangalye

Goddess Durga is the consort of Lord Shiva. Her other names are Parvati or Lalita. She exists in various divine - both friendly and fearful forms. Two of her very powerful forms are Durga - the Goddess beyond reach and Kali - the Goddess of destruction. She has a charming personality and is adored by married women for a happy married life.

Both the forms have eight hands and great power and Energy (Shakti). Durga rides on a lion and Kali rides on a corpse of a demon. Kali is the destructive aspect, she is time personified, hence the garland of skull, blood etc.

Here is a sloka chanted on the name of Goddess Durga.
Sarva Mangala Maangalye
Shive Sarvartha Saadhake
Sharanye Tryambake Gauri
Naarayani Namostute