Famaey Benoit, MOND: phenomenological review and constraints for model-building

In this talk I will summarize the intriguing phenomenology associated to galaxy scaling relations, a phenomenology which is still challenging to understand in the standard context. I will show how the MOND paradigm of Milgrom naturally solves most of these puzzles. I will also show that it however comes with new puzzles. I will focus the end of the talk on some of the main constraints that should be taken into account for MONDian model-building, especially on galaxy cluster scales.