we stood on a cliff and watched the skies when a blue fireball crossed the skies at a very high speed. This was seen again 3 days later.It was about 11.30 pm and we were all going home. I was watching the skies with my girlfriend and spotted the object pass across the sky at an unbelievable speed. It sped across the sky covering as far as I could see before disappearing. It was blue in colour and left a trail behind it. 2 of my friends also saw it and thats when I knew I wasnt seeing things. This was also seen again 3 days later at the same place. We havent seen it since but then again we havent been to that area since the summer.