# Nebula

> Three concentric gradient rings spinning at different speeds around a glowing core — a pure-CSS scientific loader with a light default theme.

- Category: Loader
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Atlas
- Dark mode: yes
- Access: free (sign in to copy the code)
- Tags: orbit, space, gradient
- Page: https://builder.atheros.ai/components/nebula
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_nebula/preview-827cb9ba0ed8.webp

## Features

- Three concentric rings spin at different speeds and directions
- Each ring uses two opposing arcs from the gradient tokens
- Glowing core with a layered gradient box-shadow
- Design-system agnostic — arc colors resolve from gradient tokens
- Responsive layout that adapts spacing down to 480px
- Fully respects `prefers-reduced-motion`

## Accessibility

- **Loading role** — `role="status"` with `aria-label="Loading"` on the loader stage
- **Reduced motion** — `prefers-reduced-motion: reduce` disables all animations
- **Decorative SVG** — Background wash layer marked `aria-hidden="true"`

## Common questions

**Which frameworks is Nebula available in?**

Nebula ships as Vanilla, React + CSS and React + Tailwind — HTML, CSS, JS and React source you can copy, download or clone into Atheros AI Builder.

**Is the Nebula loader component free?**

Yes. Nebula is a free component: preview it without an account, and sign in with a free Atheros account to copy or download the full source and customise it with AI.

**Does Nebula support dark mode?**

Yes. Nebula ships light and dark themes, both drawn from the Atlas design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Nebula live, then sign in to copy or download the source, apply another design system, or ask the AI assistant to change it: https://builder.atheros.ai/components/nebula

Every component on https://builder.atheros.ai is also reachable from Claude Code, Cursor and Codex through the Atheros MCP server (paid plans). Component index: https://builder.atheros.ai/llms-components.txt