Reason for orange balls seen floating on power lines across US
The balls, which have been spotted in locations all over the country, have prompted speculation from bemused passers by.

TL;DR
- Orange and white balls on power lines are safety markers for pilots.
- They are placed on taller power lines, particularly near airports, to improve visibility.
- The balls prevent pilots from hitting the lines, which could cause power outages and safety hazards.
- They are made of insulating materials like plastic or fiberglass and are not electrified.
- Their orange color is deliberate for easy spotting by pilots.
- Installation can be complex, requiring specialized ground or air crews.
- The balls have a lifespan of 10 to 15 years and require minimal maintenance.