
The interstellar object 3I/ATLAS is forcing scientists to rethink our understanding of comet formation.
Unlike typical comets in the Solar System, its coma—its cloud of gas and dust—is unusually dominated by carbon dioxide (CO₂).

The interstellar object 3I/ATLAS is forcing scientists to rethink our understanding of comet formation.
Unlike typical comets in the Solar System, its coma—its cloud of gas and dust—is unusually dominated by carbon dioxide (CO₂).