european space probe philae , which landed on comet 67p in november , show the comet 's core is n't magnetised .
some astrophysicists have suggested that magnetism might have been responsible for aligning and then binding together rocks into larger boulders during the early stages of planet formation .
a composite of 18 images showing off the comet 67p/churyumov-gerasimenko activity from different angles as seen between 31 january -lrb- top left -rrb- and 25 march -lrb- bottom right -rrb- .
if the surface was magnetised , we would have expected to see a clear increase in the magnetic field readings as we got closer and closer to the surface .