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Maps: NASA Blue Marble, Black Marble, LRO, MESSENGER, Cassini, New Horizons · Mars: NASA/JPL/USGS Viking mosaic, relief from MGS MOLA (NASA/GSFC, 6x vertical exaggeration) · Jupiter: Hubble OPAL 2019, NASA, ESA, A. Simon (GSFC), M.H. Wong (UC Berkeley) (CC BY 4.0), enhanced colour · Sun's limb: NASA/SDO AIA 304 Å · Sun, Saturn, Saturn's rings, Uranus, Neptune, clouds, relief: Solar System Scope (CC BY 4.0) · Moons and small worlds: NASA/JPL/USGS; Io, Ganymede, Titan, Triton via CelestiaContent (CC BY, Askaniy Anpilogov et al.); Mimas, Tethys, Dione, Rhea, Ceres, Vesta via Stellarium (CC BY 4.0, Oleg Pluton, FarGetaNik) · Bennu, Ryugu, Itokawa, Eros, Arrokoth: shape models NASA PDS / OSIRIS-REx / NEAR / New Horizons (CC0), Ryugu ISAS/JAXA (CC BY 4.0); maps via CelestiaContent (Askaniy Anpilogov, Roman Tkachenko; Stooke, NASA PDS; CC BY) · Positions of the Sun, Moon and planets: JPL DE440 ephemeris (Park et al. 2021, NASA/JPL), 1800-2100; moons: orbits fitted to JPL Horizons (satellite ephemerides JUP365, SAT441, URA184, NEP098, MAR099, PLU060); other orbits: JPL, Minor Planet Center; asteroids and comets: NASA/JPL Small-Body Database (via KStars) · Spacecraft trajectories: NASA/JPL Horizons · Rotation: IAU WGCCRE · Data: NASA NSSDC
Space Simulator

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坠入黑洞

自由落入一个真实的黑洞，看广义相对论说你会看到什么：背后的星空被弯成爱因斯坦环，中间出现黑影，前方的星光被挤得更亮更蓝，越过事件视界时什么也感觉不到，最后被潮汐力拉成面条。可选银河系中心的人马座 A*（429.7 万个太阳质量）、M87*（65 亿个太阳质量）和离地球最近的已知黑洞之一 Gaia BH1（9.62 个太阳质量）。屏幕上有两只钟：你的钟和地球的钟，越接近视界差得越多。背景是从地球看到的真实星空（ESA Gaia 天图和耶鲁亮星星表），算出的黑影大小和事件视界望远镜的测量一致。