Scientists will give an update later on the landing craft that made history by touching down on a comet.
Harpoons designed to lock the vehicle to the surface of the rock failed to anchor it into place.
European scientists who're behind the 10 year Rosetta mission will give an update later.
Art Chmielewski (pron - Chum-elle-in-ski) from NASA helped work on the project and explains what the risks are:
