PURPORT

The fourteen worlds are enumerated in Srimad-Bhagavatam, Second Canto, Fifth Chapter. The upper planetary systems are (1) Bhu, (2) Bhuvah, (3) Svah, (4) Mahah, (5) Jana, (6) Tapah and (7) Satya. The seven lower planetary systems are (1) Tala, (2) Atala, (3) Vitala, (4) Nitala, (5) Talatala, (6) Mahatala and (7) Sutala. The lower planets, as a whole, are called Patala. Among the upper planetary systems, Bhu, Bhuvah and Svah constitute Svargaloka, and the rest are called Martya. The entire universe is thus known as Triloka.