My Mom and I saw an orb in the early 1990's

My Mom and I saw an orb in the early 1990's
Time: evening, after dark

Location: Durand, MI
42.9278311, -83.9587037 not exact (for privacy), but close. 

Mom and I were driving home, about to pull in the driveway when I noticed a glowing orb hovering in front of the neighbors mailbox, only about 15ft or so away. I asked her if she saw it and she did. We sat there watching it for a moment until it began to retreat. I yelled "follow it!"
She began driving and we followed it down the road as it flew to a yard diagonal to ours, then crossed the road and moved up into the top of a pine tree in our neighbors yard and disappeared.