No, these are not dark and white chocolate truffles.
They are 3D-printed scale models of asteroids and other planetary bodies are used for real-life testing of spacecraft navigation and landing systems – martian moon Phobos is seen in the foreground here.
See http://www.esa.int/spaceinimages/Images/2017/06/3D_printed_planetary_models
(pic: ESA/ CC BY-SA 3.0 IGO)
