In the analysis, the research team also obtained images from the Large Binocular Telescope at the Mount Graham International Observatory in Arizona and spectroscopic data from the San Pedro Martir Observatory in Baja California, Mexico. [image-62] From Earth’s perspective, the nebula looks like a simple elliptical shape with a shaggy boundary. Located in the constellation Lyra, the nebula is a popular target for amateur astronomers. "The nebula is not like a bagel, but rather, it's like a jelly doughnut, because it's filled with material in the middle," said C. Robert O'Dell of Vanderbilt University in Nashville, Tenn. O'Dell's team was surprised at the detailed Hubble views of the dark, irregular knots of dense gas embedded along the inner rim of the ring, which look like spokes in a bicycle wheel. This image reveals intricate structure only hinted at in previous observations, and has allowed scientists to construct a model of the nebula in 3D — showing the true shape of this striking object. Hubble Views Hen 3-1475, A Planetary Nebula in the Making . Subscribe to the ESA/Hubble Media Newsletter. The nebula is tilted toward Earth so that astronomers see the ring face-on. And it looks like the Eye of Sauron! The nebula will become fainter and fainter until it merges with the interstellar medium. They're among the most beautiful and colorful objects in the sky. The outer rings of the Blue Ring Nebula do show up in visible light. But new observations by NASA's Hubble Space Telescope of the glowing gas shroud around an old, dying, sun-like star reveal a new twist. According to NASA: “The Hubble images offer the best view yet of the nebula, revealing a complex structure.The observations have allowed astronomers to construct the most precise three-dimensional model of the glowing gas shroud, called a planetary nebula. This nebula's simple, appearance is due to perspective: looking straight into a barrel-shaped cloud of gas shrugged off by a dying central star. The Ring Nebula is about 2,000 light-years from Earth and measures roughly 1 light-year across. "With Hubble's detail, we see a completely different shape than what's been thought about historically for this classic nebula," O'Dell said. "When the sun becomes a white dwarf, it will heat more slowly after it ejects its outer gaseous layers," O'Dell said. The Ring Nebula is a planetary nebula, these type of nebula are created when a small star sheds it mass at the end of its life span. The original star was several times more massive than our sun. Each end of the structure protrudes out of opposite sides of the ring. Hot blue gas near the central star gives way to cooler green and yellow gas at greater distances with the coolest red gas along the outer boundary. "The material will be farther away once it becomes hot enough to illuminate the gas. The Ring Nebula will continue to expand for another 10,000 years, a short phase in the lifetime of the star. Hubble reveals the Ring Nebula's true shape. It then ballooned in size, becoming a red giant. "The new Hubble observations show the nebula in much clearer detail, and we see things are not as simple as we previously thought." Hubble Views Planetary Nebula NGC 5189 . It’s not an abrupt explosion of materials, but a more gentle sloughing off into space. The Ring Nebula is a well-known planetary nebula, the glowing remains of a Sun-like star. The NASA Hubble Space Telescope has captured the sharpest view yet of the most famous of all planetary nebulae: the Ring Nebula (M57). Studying the Ring Nebula's fate will provide insight into the sun's demise in another 6 billion years. The Ring Nebula's distinctive shape makes it a popular illustration for astronomy books. A gusher of ultraviolet light from the dying star energized the gas, making it glow. A planetary nebula forms when a medium-sized star undergoes the final stages of nuclear fusion in its core and casts of its outer layers of gas. Most narrowband palettes use images of three emission lines, in a variety of orders. Bipolar planetary nebulae are formed when the central object is not a single star, but a binary system, Studies have shown that the nebula’s size increases with time, and measurements of this rate of increase suggest that the stellar outburst that formed the lobes occurred just 1200 years ago. The nebula will become fainter and fainter until it merges with the interstellar medium. The Twin Jet Nebula, or PN M2-9, is a striking example of a bipolar planetary nebula. The spectrum of light emitted by the Ring Nebula in Lyra. The nebula is expanding at more than 43,000 miles an hour, but the center is moving faster than the expansion of the main ring. They reveal a structure that until now was just theory. O'Dell's team suggests the ring wraps around a blue, football-shaped structure. In this recent picture by the Hubble Space Telescope, dust filaments and globules are visible far from the central star. The NASA/ESA Hubble Space Telescope has produced the most detailed observations ever of the Ring Nebula (Messier 57). The Hubble images have allowed the team to match up the knots with the spikes of light around the bright, main ring, which are a shadow effect. The Ring Nebula's distinctive shape makes it a popular illustration for astronomy books. Called a planetary nebula, the Ring Nebula is the glowing remains of a Sun-like star. 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