Space weather is the concept of changing environmental conditions in near-Earth space or the space from the Sun's atmosphere to the Earth's atmosphere. It is distinct from the concept of weather within the Earth's planetary atmosphere(troposphere and stratosphere).
It seems like there might be a typo in your question. If you meant weathering, it is the process where rocks and minerals are broken down by physical, chemical, or biological mechanisms, often due to exposure to the elements like wind, water, and temperature changes. This gradual process helps shape the Earth's surface over time.