Astronomy Diagram of Gravitational Waves for Kids

Astronomy infographic titled "Gravitational Waves" using ORBITAL diagram archetype, showing a clean educational scene of two compact objects spiraling together and emitting rippling spacetime waves outward, with a secondary simple detector schematic and labeled waveform inset for kids ages 8-12. Main composition: isometric 3D editorial astronomy illustration in a classic black and white scientific palette, dark-mode-friendly cosmic palette, vector-clean infographic layout, high contrast grayscale tones, crisp linework, soft glow accents, calm educational mood. Central diagram must clearly label the whole scene as "Not to scale". Show scientifically reasonable forms: two black holes or neutron stars in inspiral, curved spacetime grid, concentric wave ripples traveling at light speed, and a simple Earth-based laser interferometer icon for detection. Add 7 labeled callouts with object name and one accurate fact in English: "Black Hole" — "A stellar-mass black hole can have about 30 solar masses."; "Neutron Star" — "A neutron star is about 20 km across."; "Binary System" — "Two compact objects can orbit each other in less than 1 second before merging."; "Gravitational Wave" — "These waves travel at the speed of light."; "Merger" — "The final collision can release energy equal to several solar masses."; "LIGO Detector" — "Each LIGO arm is 4 km long."; "Spacetime Strain" — "Typical detected strain is about 1 part in 10^21." Include a small scale-reference strip in English: "Earth diameter = 12,742 km", "Neutron star diameter = about 20 km", "LIGO arm length = 4 km". Include a tiny captioned inset: "Wave signal gets stronger and faster before merger". Use child-friendly simplified shapes but scientifically accurate labels and facts, no cartoon faces, no fantasy, no astrology. 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.