It's a classic for a reason ⁣ NASAHubble took this detailed image of a classic spiral galaxy, which is located 100 million light-years from Earth in the constellation Leo Minor. The galactic spiral holds a bright core, from which a pinwheel array of arms appears to radiate outward. Dark dust lanes and bright star-forming regions help define these spiral arms.⁣ ⁣ The galaxy's distinct shape may be one reason why astronomer Edwin Hubble, for whom the Hubble Space Telescope was named, used it to help define his classification of galaxies. Hubble authored a paper in 1926 that outlined the classification of some four hundred galaxies by their appearance — as either spiral, barred spiral, lenticular, elliptical, or irregular. Our Milky Way also belongs to the broad class of galaxies defined by the presence of spiral arms. Visit science.nasa.gov/galaxies to learn more!⁣ ⁣ Image description: A large, spiral galaxy with a bright core and open, clearly defined arms is seen in deep space. Sma...