Laut Studie entstehen die beiden unterschiedlichen Hemisphären des Mars durch Mantelkonvektion und nicht durch riesige Einschläge

>Mars has northern and southern hemispheres like Earth

Any spherical object can be said to have hemispheres, and if it has a magnetic field that you can use that to call one northern and one southern, I guess. Weird way to start this article, as if it’s in any way *related* to Earth having hemispheres.