{ "ContentType": "application/json", "InvokedProductionVariant": "AllTraffic" } The sky is blue due to a phenomenon called **Rayleigh scattering**. This process is caused by how sunlight interacts with the Earth's atmosphere. {"model":"google/gemma-4-E2B-it","usage":{"prompt_tokens":15,"total_tokens":271,"completion_tokens":256,"prompt_tokens_details":null,"completion_tokens_details":null}}