Create a vibrant and eye-catching banner for a YouTube gaming channel that produces Roblox content. The banner should have a futuristic and cosmic theme, featuring elements like planets, stars, spaceships, and a gaming console. Incorporate images of popular Roblox characters and gameplay scenes, ensuring they blend seamlessly with the cosmic background. The colors should be bright and appealing, primarily using shades of blue, purple, and white to evoke a sense of adventure and excitement.