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PIX4623419: Planetary nebula M 27 (NGC 6853) in the little fox - This excellent image of the Dumbbell Nebula (M27, NGC6853), a planetary nebula in the constellation of Vulpecula, was taken at the 3.5 - meter WIYN telescope using the mini - mosaic imager. The nebula was formed when an evolved, red giant star ejected its outer envelope near the end of its lifetime. The expanding cloud of gas becomes visible once the hot core of the star, visible near the center, is exposed and the high - energy, ultraviolet light from the core ionizes the cloud. This makes the nebula emit mostly a strong emission - line spectrum. This color image was obtained by combining three separate pictures, each one taken through a narrow filter centered at the emission wavelengths of Hydrogen (H alpha, red, 656 nm), doubly ionized Oxygen (OII, green, 501 nm), and neutral Oxygen (OI, blue, 630 nm). It is physically very interesting that neutral gas can survive in a region right next to highly ionized gas, and this image shows how, as the blue component is concentrated in very dense clumps which act to protect the neutral oxygen from the intense ultraviolet radiation which has ionized the other gas components. The Dumbbell nebula is about 850 light - years away from Earth and about 1.5 light - years in diameter / Bridgeman Images
PIX4618980: Nebula NGC 3372 in the Carene - NGC 3372, The Eta Carinae Nebula - The Carene nebula is located about 7000 years - light from Earth. It is home to many hot stars, including the star Eta Carinae, a supermassive star, in the centre of the nebula. This image shows a giant star - forming region located at about 7000 light years away in the southern sky known as the Carina Nebula (NGC 3372). The bright star near the center of the image is Eta Carinae, which is one of the most massive and luminous stars known / Bridgeman Images
POV498003: Ecotourism: Zanskari woman preparing meal for Indian traveller (on right) staying with family in traditional Himalayan home in remote mountain village (www.himalayan-homestays.com , instigated by Snow Leopard Conservancy), traditional kitchen Reru (aka. Raru), Lungnak Valley, Zanskar, Ladakh, Jammu & Kashmir, India / Bridgeman Images