Galilean Moons of Jupiter Orbital Infographic

Astronomy infographic titled "Galilean Moons of Jupiter"; use an ORBITAL diagram adapted for a high-school audience (override the requested galaxy anatomy because the topic is a planetary moon system). Central composition: Jupiter at center with the four Galilean moons on concentric orbital paths — Io, Europa, Ganymede, Callisto — shown in scientifically reasonable order and relative moon-size emphasis, with orbital distances indicated; add a clear caption "Diagram not to scale" because moon sizes and orbital spacing are simplified for readability. Show Jupiter with subtle banding in brown-gold tones and the moons in distinctive scientifically plausible colors: Io sulfur-yellow/orange, Europa pale icy beige with faint line texture, Ganymede gray-brown icy rock, Callisto dark cratered brown-gray. Include 6 labeled callouts in English: "Jupiter — Mass: 1.898 × 10^27 kg; largest planet in the Solar System.", "Io — Diameter: 3,643 km; the most volcanically active moon known.", "Europa — Diameter: 3,122 km; likely has a global subsurface ocean beneath ice.", "Ganymede — Diameter: 5,268 km; the largest moon in the Solar System.", "Callisto — Diameter: 4,821 km; heavily cratered surface preserves ancient impact history.", "Galilean moons — Discovered by Galileo Galilei in 1610; they orbit Jupiter in order Io, Europa, Ganymede, Callisto." Add orbit labels with average distance from Jupiter in English: "Io: 421,700 km", "Europa: 671,100 km", "Ganymede: 1,070,400 km", "Callisto: 1,882,700 km". Add a small scale-reference strip in English: "Earth diameter = 12,742 km" and "Jupiter diameter = 139,820 km". Include a small legend note: "Moon sizes shown approximately relative to each other; orbital spacing compressed". Visual style: minimal flat scientific, midnight gold palette, clean geometric shapes, thin gold orbit lines on deep midnight navy background, crisp editorial labels, balanced negative space, calm educational mood, editorial astronomy illustration, dark-mode-friendly cosmic palette, vector-clean infographic layout. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no UFO / pseudoscience imagery, no watermarks Scientifically accurate facts, no UFO / pseudoscience imagery, no astrology framing. Sizes and distances are typically not to true scale — label as such.