# Planetarium Starry Sky Live Commentary: "Measuring the Universe - The Cosmic Ruler"
_プラネタリウム　ほしぞら宇宙生解説「宇宙のものさし ～広い宇宙を測るには～」_

- **When:** Thu, Oct 8, 2026 – Sun, Nov 29, 2026 (JST)
- **Where:** Itabashi City Education and Science Museum Planetarium, Itabashi — 4-14-1 Tokiwadai, Itabashi, Tokyo
- **Map:** https://www.google.com/maps/search/?api=1&query=35.76347,139.679611
- **Price:** price on the official site
- **Category:** Shows & Entertainment
- **Official site:** https://www.walkerplus.com/event/ar0313e622983/
- **On Tokyo Events:** https://eventstokyo.com/en/events/planetarium-starry-sky-live-commentary-measuring-the-universe

![](https://ms-cache.walkerplus.com/walkertouch/wtd/event/83/l2/622983.jpg)

A program designed for everyone from upper elementary students to adults to enjoy the current night sky and space topics. This session's theme is "The Cosmic Ruler." It explains the different methods used to measure distances to the Moon, stars, and galaxies, introducing the concept of the "cosmic distance ladder" where these methods connect like a relay. Suitable for upper elementary students and above. Doors open 10 minutes before the show, and no admission is allowed after the presentation begins.

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Source: Tokyo Events — https://eventstokyo.com/en/events/planetarium-starry-sky-live-commentary-measuring-the-universe