Climate+Change+on+Other+Planets

Climate change does happen on other planets. The question is, does this mean the climate change on Earth is not man-made? The easy answer is no, because how can climate change be happening on these other planets if not for non-human reasons, like the sun? However, there are other reasons for other planets warming, the sun hasn't been consistent, and not all other planets are warming, in fact, some are cooling.