i woke up and i saw this thing about 20 floors up not moving.

it was a summer nigth, i was sleeping with the door open that leads to the patio.
i was 6 or 7 years old.i woke up and tried to go to the bathroom, to do this i had to croos the patio into de rest of the house, when i step out of my door i saw this round object up there, it was about 20 floors up, but it was not moving, it had color ligths moving around it describing a small circle under this object, and it made a sound as soon i tried to cross and had to back up, i tried to cross two more times and it did not let me cross, meking this sound, it was like a toy pistol.
i stared yelling to my mom until she woke up and also saw this object fliying up there. then it went away really quick. im 31 now, and we both remember this thing very clear.
Date of sighting is approximate.  PD