ŚB 1.12.5

Only a rich and great man’s name and fame are known all over the world, and the name and fame of Mahārāja Yudhiṣṭhira reached the higher planets because of his good administration, worldly possessions, glorious wife Draupadī, the strength of his brothers Bhīma and Arjuna, and his solid sovereign power over the world, known as Jambudvīpa. Here the word lokāḥ is significant. There are different lokas or higher planets scattered all over the sky, both material and spiritual. A person can reach them by dint of his work in the present life, as stated in Bhagavad-gītā (9.25). No forceful entrance is allowed there. The tiny material scientists and engineers who have discovered vehicles to travel over a few thousand miles in outer space will not be allowed entrance. That is not the way to reach the better planets. One must qualify himself to enter into such happy planets by sacrifice and service. Those who are sinful in every step of life can expect only to be degraded into animal life to suffer more and more the pangs of material existence, and this is also stated in Bhagavad-gītā (16.19). Mahārāja Yudhiṣṭhira’s good sacrifices and qualifications were so lofty and virtuous that even the residents of the higher celestial planets were already prepared to receive him as one of them.