How wide is the Keck telescope mirror in humans?

The Keck telescope mirror is 10 m wide, the same as 5.88 average adults (1.70 m) stacked head to toe.

Hawaii. It sits on top of the Mauna Kea volcano.

Measured straight across. Source.

Things about the same size

• 🚜 Excavator 5.88 humans
• 🤿 Olympic diving platform 5.88 humans
• 🏊 Backyard pool 5.88 humans
• 🪖 Battle tank 5.76 humans
• 🟫 Squash court 5.74 humans
• 🪖 Land Raider 6.12 humans

More space

• 💿 Voyager Golden Record 0.18 humans
• 🚁 Ingenuity helicopter rotor 0.71 humans
• ☄️ Hoba meteorite 1.59 humans
• 🚗 Starman's Tesla Roadster 2.32 humans
• 🦾 Canadarm 8.94 humans
• 📡 Very Large Array dish 14.7 humans
• 📡 FAST radio telescope 294 humans
• 🌑 Deimos (moon of Mars) 7,294 humans