Prabhupāda: Four hundred and, yes, four hundred and three thousands of years, solar years, is the one unit of yuga. Such thousand yugas makes twelve hours of the Brahmaloka planet. Similarly, they live there for a hundred years. But these four things, namely birth, death, old age, and disease, these four things are everywhere, either you live in this planet or moon planet or sun planet or any other planet. The duration of life may be very, very great. Just like in comparison to the ant, our life, human being—we have got hundred years age—so to the ant it may be very astonishing: "Oh, how such a great length of time one can live?" Similarly, we may be astonished by hearing twelve hours duration of Brahmaloka, but actually there is. But still, you cannot avoid death. Death is there.