About Bhuvaneswari
Bhuvanesvari is the fourth Mahavidya. 'Bhuvan' means the Universe, and 'Iswari' means the Ruler — She is thus the Ruler of the Universe. She is also known as Rajarajeswari, and protects the Universe.
Here is the story of Her manifestation, from the Pranatoshini Grantha. Brahma had the desire to create the Universe, and performed intense tapasya to invite the energy of Creation, Kriya Shakti. Parameswari, pleased with his tapasya, responded to his invitation and came as Bhu Devi, or Bhuvanesvari. She is red in color, seated on a lotus flower, Her body resplendent and shining with jewels. She holds a noose (paasham) and a goad (ankusham) in two of Her hands, while the other two display the mudras of blessing and freedom from fear.
She resides in Shiva's heart. Bhuvanesvari is the Supreme Empress of Manifested Existence, the exposer of consciousness.
Beeja Mantra
Gayatri
