Privacy
Cookies and Local Storage
GreenHalos launches without external advertising, non-essential analytics or cross-site tracking cookies.
Source version: GreenHalos Master Specification 1.0 ·
Application storage
GreenHalos does not write an application cookie at launch. It can store one bounded browser-local preference record named greenhalos.preferences.v1 for language, theme, data and motion modes, hemisphere, visible layers and catalogue-location identifiers. The record is capped at 100 saved identifiers and 131,072 serialized bytes. Your browser can also retain ordinary cache data, navigation history and a geolocation permission choice under its own controls.
Necessary delivery data
Cloudflare may use strictly necessary security and delivery mechanisms when serving or protecting the site. GreenHalos does not use those mechanisms to build a cross-site aurora-viewing profile.
Future changes
If advertising or analytics is introduced later, it will be a separate release. The cookie notice and privacy controls will be updated before any non-essential technology is enabled, and consent will be requested where required.