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How did a star form this beautiful nebula? In the middle of emission nebula NGC 6164 is an unusually massive star. The central star has been compared to an oyster’s […]

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What created this giant X in the clouds? It was the shadow of contrails illuminated from below. When airplanes fly, humid engine exhaust may form water droplets that might freeze […]

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Yes, but can your volcano do this? To the surprise of some, Mt. Etna emits, on occasion, smoke rings. Technically known as vortex rings, the walls of the volcano slightly […]

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Watch Juno zoom past Jupiter. NASA’s robotic spacecraft Juno is continuing on its now month-long, highly-elongated orbits around our Solar System’s largest planet. The featured video is from perijove 16, […]

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When the dark shadow of the Moon raced across North America on April 8, sky watchers along the shadow’s narrow central path were treated to a total solar eclipse. During […]

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A jewel of the southern sky, the Great Carina Nebula is more modestly known as NGC 3372. One of our Galaxy’s largest star forming regions, it spans over 300 light-years. […]

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From our vantage point in the Milky Way Galaxy, we see NGC 1232 face-on. Nearly 200,000 light-years across, the big, beautiful spiral galaxy is located some 47 million light-years away […]

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Not one, but two comets appeared near the Sun during last week’s total solar eclipse. The expected comet was Comet 12P/Pons-Brooks, but it was disappointingly dimmer than many had hoped. […]

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The explosion is over, but the consequences continue. About eleven thousand years ago, a star in the constellation of Vela could be seen to explode, creating a strange point of […]

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Something strange happened to this galaxy, but what? Known as the Cigar Galaxy and cataloged as M82, red glowing gas and dust are being cast out from the center. Although […]