Black, spinning orb rising

I am speaking for the witness, who is my 9 year old son. He was in the back yard playing with the dog when he observed a black sphere. There was sufficient features that allowed him to identify what appeared to be rotational movement. He was adamant it was not a balloon. It rose straight up and disappeared from sight. Insufficient information to determine a rate of speed or guestimates on initial altitude, or an estimate of size. My son and I are familiar with aircraft and fly regularly. At risk of sounding bias, his observational skills and ability to identify makes models and years of cars way exceeds my own, and though I am a UFO enthusiast and experiencer, he has spent the last four years telling me I am delusional, and so for him to say he wanted to make a report... Well, here we are. He would not entertain balloon, helicopter, or air clutter as an alternative. The precise time isn't known but reasonably between 1900 and 2000 hours. The date is accurate, as his experience occurred after our evening call. We speak daily, remotely. I live in Texas.
He observed an aura around the artifact. This is not something I have discussed with him.