%0 Journal Article %T Star Formation as Seen by Low Mass Stars %A Guido De Marchi %A Nino Panagia %J - %D 2014 %R https://doi.org/10.14311/APP.2014.01.0113 %X Using the Hubble Space Telescope (HST) we have characterised and compared the physical properties of a large sample of pre-main sequence (PMS) stars spanning a wide range of masses (0:5 - 4M£¿), metallicities (0:1 - 1 Z£¿) and ages (0:5 - 30 Myr). This is presently the largest and most homogeneous sample of PMS objects with known physical properties. The main results of this ongoing study are briefly summarised here %U https://ojs.cvut.cz/ojs/index.php/APP/article/view/2358