Day: July 15, 2021

The Dark Tower in Scorpius

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In silhouette against a crowded star field along the tail of the arachnalogical constellation Scorpius, this dusty cosmic cloud evokes for some the image of an ominous dark tower. In fact, clumps of dust and molecular gas collapsing to form stars may well lurk within the dark nebula, a structure that spans almost 40 light-years across this gorgeous telescopic portrait. Known as a cometary globule, the swept-back cloud, is shaped by intense ultraviolet radiation from the OB association of very hot stars in NGC 6231, off the upper edge of the scene. That energetic ultraviolet light also powers the globule’s bordering reddish glow of hydrogen gas. Hot stars embedded in the dust can be seen as bluish reflection nebulae. This dark tower, NGC 6231, and associated nebulae are about 5,000 light-years away. via NASA https://ift.tt/3wAKtdi

Wikipedia article of the day for July 15, 2021

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Wikipedia article of the day is General Motors companion make program. Check it out: Article-Link Summary: In the late 1920s, American automaker General Motors (GM) introduced four brands to supplement its five existing brands of passenger cars. In descending order of price, these were LaSalle, to supplement Cadillac; Viking (example pictured), to supplement Oldsmobile; Marquette, to supplement Buick; and Pontiac, to supplement Oakland. The brands were introduced in an effort to fill gaps in GM’s pricing ladder and produce cars that were cheaper to make for its existing divisions. The Great Depression resulted in the failure of most of these brands. Viking and Marquette were each discontinued within two years of their introductions, and LaSalle after slightly more than a decade. Pontiac had the opposite fate; it was Oakland that would be discontinued, while Pontiac would continue until 2010.