The sun may have stripped away meters of interstellar comet 3I/ATLAS

The sun may have stripped away meters of interstellar comet 3I/ATLAS

The interstellar comet 3I/ATLAS brought material from another planetary system within reach of our telescopes, but reading its chemistry poses a problem. Energetic particles encountered during its journey through space may have changed its outer layers, so how much of what astronomers detect still reflects the comet's birthplace?