---
title: "Cosmic Orb"
description: "An iridescent soap-bubble planet: a slowly spinning sphere of nebula bands, dust lanes and twinkling stars wrapped in a refracting glass limb with chromatic aberration at the edge."
---
import { InstallCommand } from "/snippets/install-command.jsx";
import { VariablesExplorer } from "/snippets/variables-explorer.jsx";
```html cosmic-orb.html
Cosmic Orb
```
## Install
That writes one file: `compositions/cosmic-orb.html`.
## Add it to your video
It runs for 10 seconds at 1920×1080. Paste this into your composition:
```html index.html
```
Move it in time with `data-start`. Put it on a different timeline row with
`data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.
## Change how it looks
Set these CSS variables on the block:
- `--hue` — Nebula hue. Defaults to `268`.
- `--accent` — Accent hue. Defaults to `196`.
- `--spin` — Spin rate (turns per second). Defaults to `0.035`.
- `--stars` — Star density. Defaults to `1`.
- `--glow` — Glow intensity. Defaults to `1`.
- `--size` — Orb size (fraction of frame height). Defaults to `0.86`.
- `--pulse` — Beat pulse (0-1, flat value when no envelope is set). Defaults to `0`.
- `--pulseenvelope` — Beat pulse envelope: comma-separated 0-1 samples spread evenly across the clip. Defaults to ``.
- `--backdrop` — Backdrop. Defaults to `#04040a`.
{/* hf:generated-footer */}
Tagged `webgl` `shader` `background` `showcase` `3d`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)