The article aims to propose cosmology as a philosophical topic. For this purpose it analyzes some aspects of the concept of Weltoffenheit in Max Scheler. This concept serves both to renew the paradigm of the "Great chain of being", the link that unites all things, and to highlight the cosmogonic character of the individual biography: the story of an individual as a dramatic birth of a microworld. Although loaded with speculative and theological elements, the Schelerian idea of the world as a personal cosmogony, tension between infinite openness and organic totality, remains an important moment for a philosophical reflection on the cosmos. Its originality with respect to Husserl and Heidegger lies in the fact that Scheler focuses on the active and participatory – indeed the cosmogonic ̶ aspect of “being-in-the-world”.