I went outside at about 10.38 pm because apparantly there were going to be shooting stars that night. After a minute or two i noticed a bright blue light above the opposite hill. I assumed it was a light in a house.After a while i realized it couldnt be on the house, it was too high and it just didnt look right.It started to move in a straight line in my direction and as it came closer i noticed two things-What i could see was a bright blue light, sphere shaped.Also the noise this thing was emmitting, it was like heavy machinery, a drill perhaps.This was all very strange so I ran inside to get a torch, to have a better look. I couldn't find one so I went back out, but by this time the ufo was almost gone. I could still see and hear it though. After about 15 seconds, it was gone.I was eager to find out what it could be, the glowing blue light(which didnt blink btw) and strange,grinding,sound had got me thinking this wasnt any normal aircraft.When I went back inside I felt quite scared, I thought maybe an alien was coming to get me!