So i was on my way to school by bus as usual when i saw this dark thing in the sky. it looked like a cloud but by it's colour it seemed out of place. i took some photos to prove that it was real, but i have a crappy phone + i had it zoomed in so they didn't turn out that great. the bus then turned around a corner and i couldn't see the thing anymore. i am sorry for the poor quality of the pics and my broken english, but it it was a cloud please tell me what caused it to look this way.