I was walking through the heath park playing fields in cardiff south wales, the time was 17:10. the sky was beautifully clear and was looking at a bright crescent moon and a planet shining brightly (not sure which one). i noticed a large very bright orange glowing sphere in the sky, it was travelling very fast from about half way up from the horizon in an extended arc right down to the tree line. at first i thought this must be a plane crashing but there was no sound coming from it. there was a plane also in the sky a little higher thsn where i first spitted the ufo but lights from the plane were flashing. i imagine it could likely be a large meteorite, bigger than any shooting star i have ever seen; i am reporting my sighting because if it was a meteorite that size it looked like it reached the ground although i can't confirm this as it went behind the trees and i couldn't say where it could have hit.