# The Scale of the Universe 2

A browser zoom tool that lines up objects from the subatomic to the whole observable universe so you can scroll between size scales and click objects for short notes.

- Category: Interactive explainers · by Cary Huang and Michael Huang
- Website: https://htwins.net/scale2/
- Live data: no
- Checked on the official pages: 2026-10-23

## API

- API unclear. Do not scrape the site; use it by hand or through its downloads.

## Data and license

- License: copyright, all rights (no license stated) (https://htwins.net/); covers the Scale of the Universe 2 app and site
- Commercial use unclear
- Credit: not stated
- Embedding unclear
- Quote (license): "© 2008– Cary Huang (Cary's YouTube channel) and Michael Huang (Michael's YouTube channel)" (https://htwins.net/)
- Quote (credits): "Created by Cary Huang" (https://htwins.net/scale2/)

## Rules for an agent

- No API or data export; it is a self-contained web app (ported to Pixi.js), so link to htwins.net/scale2/.
- Do not copy the object art or descriptions; the site is copyrighted and gives no reuse license
- Credit Cary Huang and Michael Huang when you link to it

Human page: https://agentgid.com/resources/scale-of-the-universe-2/
Source: AgentGid (agentgid.com). Facts are quoted from the site's own pages; check the license page before you ship.