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NJ Night Sky: Solstice and a Christmas moon

Though we wouldn’t know it from a comfortable continue we’ve been having, a initial day of winter is imminent. The winter solstice will start during 11:48 p.m. Monday.

At this point, a object is during a lowest indicate in a sky. It rises in a southeast and, during a top indicate in a south, it is usually about 25 degrees above a horizon. This low altitude creates for a brief day and a object sets fast in a southwest.

The object has been relocating southward by a summer and into a fall. Now that a object has reached a southernmost position, it seems to postponement in motion. This is where a word “solstice” comes from: It originated from a Latin ”solstitium” or “sun stoppage.”

After this day, a object is solemnly relocating northward. Although a continue might get colder, a days will be removing longer and a object sets later. A month from now, nightfall will be 30 mins later.



More than 1,000 images taken by NASA’s Lunar Reconnaissance Orbiter (LRO) were stitched together in 2010 to make this fantastic mosaic of a moon.  

The full moon of Dec is famous as a Cold Moon, or a Long Nights Moon to Native Americans. This year, we could call it a Christmas Moon — as it is full on Dec. 25 during 6:11 a.m.

This hasn’t happened given 1977 and won’t occur again until 2034. This might seem like an surprising event, though it is due to a Metonic Cycle.

In a 5th century B.C., a Greek astronomer Meton of Athens beheld that 235 full moons equal roughly accurately 19 years. So you’d design a full moon on Christmas Day each 19 years. However, in 1996, given a Metonic cycle is a integrate hours brief of 19 years, a full moon fell on Dec. 24.

You can watch a moon arise during 4:20 p.m. on Christmas Eve. It is in a sky all night and sets during 7:05 a.m. Christmas morning.

Kevin D. Conod is a planetarium manager and astronomer during the 
Newark Museum’s Dreyfuss Planetarium. For updates on a night sky, call a Newark Skyline during (973) 596-6529.

Article source: http://www.nj.com/inside-jersey/index.ssf/2015/12/nj_night_sky_solstice_and_a_christmas_moon.html

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