Tableau système solaire façon infographie des types de galaxies

Astronomy infographic titled "Galaxy Types" using a GALAXY anatomy / classification layout adapted as a clean scientific flowchart for galaxy morphology, for an astrophysics enthusiast. Central diagram: a classification flow from "Hubble Sequence" to major galaxy classes, with visually accurate galaxy appearances and scientifically reasonable relative size cues, but clearly label the overall diagram "not to scale" and note that galaxy sizes and distances are schematic. Show 6 labeled callouts with canonical scientific names and one accurate fact each: "Elliptical galaxy (E0-E7)" — "Typical stellar mass: 10^7-10^13 solar masses"; "Lenticular galaxy (S0)" — "Disk galaxy with little cold gas and low star formation"; "Spiral galaxy (Sa-Sc)" — "Typical diameter: about 30 000-200 000 light-years"; "Barred spiral galaxy (SBa-SBc)" — "The Milky Way is a barred spiral galaxy"; "Irregular galaxy (Irr)" — "Often rich in gas and active star formation"; "Dwarf galaxy" — "Typical stellar mass: less than 10^9 solar masses". Add 2 more supporting callouts: "Andromeda Galaxy (M31)" — "Type: SA(s)b spiral, diameter about 220 000 light-years"; "Large Magellanic Cloud" — "Type: Magellanic irregular, distance about 163 000 light-years from Earth". Include compact labels near each object with a scale-aware note such as "typical diameter" or "mass range". Add a small English scale-reference strip at the bottom: "Milky Way diameter = about 100 000 light-years"; "Andromeda diameter = about 220 000 light-years"; "1 light-year = 9.46 × 10^12 km". Include a small legend for morphology: "Elliptical", "Disk", "Bar", "Spiral arms", "Irregular structure". Visual style: editorial NASA-poster, aurora green & violet palette, luminous starfield accents, subtle nebular gradients, high-contrast dark background, refined typography, precise callout lines, scientifically accurate galaxy textures, 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.