A blue/greenish sphere suddenly appeared above the horizon, and then fell right down and faded.A blue/greenish sphere like 5 times larger than the largest star suddenly appeared appr 30 degrees above the horizon, hoovered there for appr 0.5 seconds and then fell like a stone very fast towards the earth. Same intensity in the its light when falling, but appr 5 degrees above horizon it fades like if it had burned and then faded very quickly and left a track of glowing particles that however disssappeared within a second. It could have been fireworks, but it didn't look like any firework I or the other witnesses have seen. It seemed very large to be a firework, and it stood still such a short time and then raced towards the ground. No explosion was heard as fireworks often give. A pretty bad forework would it have been that glowed for such a short time. The light of the sphere was very bright and very large and clearly bluish/greenish, so a star is absolutely out of the question. A falling particle from space? No, it suddenly appeared on one spot and stood still there for appr half of a second. Observer one (me): 23 year old medicine student. Observer two: 48 year old MD. Observer three: 49 year old police officer.