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NASA Astronomy Picture of the Day:

What powers this unusual nebula? CTB-1 is the expanding gas shell that was left when a massive star toward the constellation of Cassiopeia exploded about 10,000 years ago. The star likely detonated when it ran out of elements near its core that could create stabilizing pressure with nuclear fusion. The resulting supernova remnant, nicknamed the Medulla Nebula for its brain-like shape, still glows in visible light by the heat generated by its collision with confining interstellar gas. Why the nebula also glows in X-ray light, though, remains a mystery. One hypothesis holds that an energetic pulsar was co-created that powers the nebula with a fast outwardly moving wind. Following this lead, a pulsar has recently been found in radio waves that appears to have been expelled by the supernova explosion at over 1000 kilometers per second. Although the Medulla Nebula appears as large as a full moon, it is so faint that it took many hours of exposure with a telescope in Seven Persons, Alberta, Canada to create the featured image.

Photo by Kimberly Sibbald

Edward R. Murrow (1908 – 1965) was an American broadcast journalist and war correspondent. He first gained prominence during World War II with a series of live radio broadcasts from Europe. Murrow was co-producer of "Hear It Now", an authoritative hour-long, radio weekly news digest. He moved on to television with, "See It Now" series, which helped lead to the censure of Senator Joseph McCarthy. Murrow is considered one of journalism's greatest figures. 
Quote source: Edward Murrow's last public speech in October 1964, receiving a "Family of Man" Humanity award

NASA Astronomy Picture of the Day:

What's happening over the water? Pictured here is one of the better images yet recorded of a waterspout, a type of tornado that occurs over water. Waterspouts are spinning columns of rising moist air that typically form over warm water. Waterspouts can be as dangerous as tornadoes and can feature wind speeds over 200 kilometers per hour. Some waterspouts form away from thunderstorms and even during relatively fair weather. Waterspouts may be relatively transparent and initially visible only by an unusual pattern they create on the water. The featured image was taken in 2013 July near Tampa Bay, Florida. The Atlantic Ocean off the coast of Florida is arguably the most active area in the world for waterspouts, with hundreds forming each year. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)

Photo by Joey Mole

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