Interstellar medium and star formation

The formation of stars, particularly the high-mass star formation, poses several still open questions. Nowadays, thanks to the most modern telescopes and instruments, we are able to observe and analyse many physical and chemical processes involved in the birth of massive stars. This work introduces to the interstellar medium, cradle of the stars, and makes focus on the interstellar structures distributed in the different spatial scales related to the collapse of the gas that gives rise to the star formation processes. Through some current works done by the investigation group of Interstellar Medium, Star Formation and Astrochemistry belonging to Instituto de Astronom\'ia y F\'isica del Espacio (https://interestelariafe.wixsite.com/mediointerestelar), it is shown that the observational study of the star formation is a research that must be carried out in a multispectral way, pointing to the spatial multiscale.