I was at work FLYING above the city of Barcelona (37000') when i caught what would have been a rather prolonged shooting star if i would have been at night, however this was during the day and bright sunlight. The object moved in a 45 degree angle down and to the right. I don't know how long it had already been illuminating as it came into view from above the ceiling of the flight deck. It was in the direction between 260 - 270 degrees.