STELLAR ARTWORK, V2 REFINEMENT These are published artist renditions, not photographs of resolved stellar surfaces. Original artwork colours are retained. Crops isolate stellar bodies and are rescaled independently to the stated representative radii. Photometric glare, plasma, atmospheric haze and wind extents do not define measured stellar diameters. Main-sequence types share source artwork where appropriate; appearance is representative, not a separate reconstruction of each named star. NASA Target Star Catalog artist concepts (F, K and M stellar types) Publisher: NASA Exoplanet Exploration. Individual artist not identified on the source page. https://science.nasa.gov/exoplanets/target-star-catalog/ https://science.nasa.gov/wp-content/uploads/2024/10/F_rect.png https://science.nasa.gov/wp-content/uploads/2024/10/K_rect.png https://science.nasa.gov/wp-content/uploads/2024/10/M_rect.png Stored as star-f.jpg, star-k.jpg, star-m.jpg. Source files 1200 x 675. F-type artwork also illustrates the white appearance of the A-type example and Sirius A, not their specific measured surface features. Frame crops retain the original pixels and colours. Brown dwarf with bands of clouds Artwork: NASA/JPL-Caltech. https://science.nasa.gov/asset/webb/brown-dwarf-illustration-2/ https://assets.science.nasa.gov/content/dam/science/missions/webb/outreach/migrated/2018/STScI-01FKNW7RYF6SWRQEF8CQRYQ4M4.png/jcr:content/renditions/2000x1125.jpg Stored as star-brown.jpg. One representative T5-size brown dwarf remains in the catalogue; the illustration is generic, not a measured T5 surface. Blue supergiant LS1 Artwork: ESA/Hubble, M. Kornmesser. Still extracted at 5 seconds from the published 1080p animation. https://esahubble.org/videos/heic1807d/ https://cdn.esahubble.org/archives/videos/hd_1080p25_screen/heic1807d.mp4 Stored as star-blue.jpg. Used for blue supergiant and hot B/O class examples, rescaled to their independent representative radii. Original blue colour and surface artwork retained. ESA/Hubble image/video usage: https://esahubble.org/copyright/ Red giant Artwork: NASA’s Goddard Space Flight Center/Chris Smith (KBRwyle). https://science.nasa.gov/universe/stars/types/ https://assets.science.nasa.gov/dynamicimage/assets/science/astro/universe/internal_resources/405/Red_Giant-1.jpeg?w=1186 Stored as star-red-giant.jpg, used at the representative red-giant radius. Red supergiant Antares, artist’s impression Artwork: ESO/M. Kornmesser. https://www.eso.org/public/images/eso1726b/ https://cdn.eso.org/images/large/eso1726b.jpg Stored as star-supergiant.jpg. Used as an illustrative red-supergiant appearance for Betelgeuse and UY Scuti, maintaining their individual catalogue radii. It is not an observation or a reconstruction of either named star. White dwarf in the PSR J0348+0432 binary illustration Artwork: ESO/L. Calçada. https://www.eso.org/public/images/eso1319c/ https://cdn.eso.org/images/large/eso1319c.jpg Stored as star-white-dwarf.jpg, a 500 x 500 crop of the white-dwarf globe from the 5000 x 3125 image. Used as representative white-dwarf appearance for Sirius B; the companion and system-wide gravitational illustration are cropped away. No claim that the original binary depiction is physically to scale. Wolf–Rayet core and expelled wind Artwork: ESO/L. Calçada. https://www.eso.org/public/images/eso2115b/ https://cdn.eso.org/images/large/eso2115b.jpg Stored as star-wr.jpg, an 800 x 800 crop around the bright core. The catalogue states an illustrative core scale, not a measured photospheric boundary or calibrated wind size. Glare does not establish a physical diameter. ESO usage terms: https://www.eso.org/public/outreach/copyright/ Magnetar (a neutron star), published 2025 illustration Artwork: ESA. https://science.nasa.gov/asset/hubble/illustration-of-magnetar/ https://assets.science.nasa.gov/content/dam/science/missions/hubble/releases/2025/04/STScI-01JQSDXJ6079K1HM6D6FRER23B.tif/jcr:content/renditions/Quarter%20Res.jpg Stored as star-neutron.jpg. Crop isolates the 340-pixel stellar globe and nearby glow; wide magnetic-field lines are excluded from the diameter measurement. Illustration scaled to a representative 24 km diameter. NASA media usage: https://www.nasa.gov/nasa-brand-center/images-and-media/ Stellar radius calibration: Pecaut & Mamajek / Mamajek dwarf sequence https://www.pas.rochester.edu/~emamajek/EEM_dwarf_UBVIJHK_colors_Teff.txt Final appearance substitutions: Sirius B and the representative Wolf–Rayet star use the ESA/Hubble/M. Kornmesser LS1 globe artwork as explicitly labelled related-type surface illustrations. This avoids including unrelated binary/grid imagery or mistaking diffraction glare for a physical diameter. The unused white-dwarf binary and WR wind crops are not displayed. User-supplied spectral chart Uploaded magnific-UFruNtvGy7Rs55f8CkRd-star_types_0.jpeg, copied as user-star-types.jpg. The labelled F, A, B and O discs supply corresponding main-sequence examples; Sirius A uses class A. Circular clipping excludes text and reflections. Sizes still come from the catalogue, not from the chart’s drawn proportions. Colours and surface textures are illustrative. The original UY Scuti atlas illustration is restored at the user’s request. Mariana Trench / Challenger Deep NOAA https://oceanservice.noaa.gov/facts/oceandepth.html Approximately 10,935 m below sea level; measurement study https://repository.library.noaa.gov/view/noaa/33477 reports 10,935 ±6 m. Higher-resolution user-supplied spectral sheet (2026-10-26): F crop used for F0, A crop for Sirius A and A0. Stellar surfaces are illustrative. Giant sequoia: generated botanical illustration with transparent background, 2026-10-26.