Messier 81
apod.nasa.gov/apod/image/2503/…
One of the brightest galaxies in planet Earth's sky is similar in size to our Milky Way Galaxy: big, beautiful Messier 81. Also known as NGC 3031 or Bode's galaxy for its 18th century discoverer, this grand spiral can be found toward the northern constellation of Ursa Major, the Great Bear. The sharp, detailed telescopic view reveals M81's bright yellow nucleus, blue spiral arms, pinkish starforming regions, and sweeping cosmic dust lanes. But some dust lanes actually run through the galactic disk (left of center), contrary to other prominent spiral features. The errant dust lanes may be the lingering result of a close encounter between M81 and the nearby galaxy M82 lurking outside of this frame. Scrutiny of variable stars in M81 has yielded a well-determined distance for an external galaxy -- 11.8 million light-years.
Attribution: Lorand Fenyes
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Als Antwort auf Josh Universe • • •The image depicts a close-up view of a textured surface, likely from a celestial body such as Mars. The surface is predominantly a uniform sandy brown color, with various shades indicating different elevations and textures. The surface features numerous small craters and pits, with some areas appearing smoother and others more rugged. The overall appearance is rough and uneven, with a circular frame highlighting the detailed texture. The background is black, emphasizing the surface's features.
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