Monday, April 14, 2014

Blood Moon 2014: Lunar Eclipse Viewing Guide - History/Webcast/tetrad | NASA/CCSSC

Blood Moon 2014:

3:06 AM Eastern 12:06 AM Pacific 15.04.2014

With all the hype out there about this being a sign or something bigger, really it is just the first Lunar Eclipse of 2014.

It is Forecasted to be more of a "Dark Orange" Moon, #BloodMoon refers to the color of the Moon when light is refracted around aerosols in the atmosphere.

The April 15th eclipse begins at 2 AM Eastern time when the edge of the Moon first enters the amber core of Earth’s shadow.  Totality occurs during a 78 minute interval beginning around 3 o’clock in the morning on the east coast, midnight on the west coast.  Weather permitting, the red Moon will be easy to see across the entirety of North America. 

 "For people in the United States, an extraordinary series of lunar eclipses is about to begin.

The action starts on April 15th when the full Moon passes through the amber shadow of Earth, producing a midnight eclipse visible across North America. So begins a lunar eclipse tetrad — a series of 4 consecutive total eclipses occurring at approximately six month intervals.  The total eclipse of April 15, 2014, will be followed by another on Oct. 8, 2014, and another on April 4, 2015, and another on Sept. 28 2015.

"The most unique thing about the 2014-2015 #tetrad is that all of them are visible for all or parts of the USA," says longtime NASA eclipse expert Fred Espenak.



On April 15th there will be a total eclipse of the Moon. Got clouds? No problem. The event will be broadcast live on the web by the Coca-Cola Science Center.

2014 Lunar Eclipse Live

LUNAR ECLIPSE, TUESDAY MORNING: The mainstream media is abuzz with reports of a "blood moon" on Tuesday morning. The scientific term is "lunar eclipse." On April 15th at 6 minutes past midnight Pacific Time (3:06 a.m Eastern Time), the Moon will enter the sunset-colored colored shadow of Earth, producing a total eclipse of the Moon:


Above: A total lunar eclipse on Dec. 21, 2010. Photo credit: Gary A. Becker

The color of Earth's shadow, and thus the color of the eclipsed Moon, depends substantially on the amount of volcanic ash and other aerosols floating in the stratosphere. According to atmospheric sciences professor Richard Keen of the University of Colorado, the stratosphere is clear. This means the eclipse will be not "blood red," but rather bright orange.
See for yourself. The event will be visible from Australia, New Zealand, and all of the Americas: visibility map. It's so bright, even observers in light-polluted cities will have no trouble enjoying the show.

Got clouds? No problem. The event will be broadcast live on the web by the Coca-Cola Science Center at Columbus State University in Georgia.

For more information about the eclipse, get the full story and a video from Science@NASA. 




Waves of Orange Orbs over Arizona/Blood Moon
BPEarthWatch BPEarthWatch·653 videos


A Tetrad of Lunar Eclipses - Science.NASA.gov


March 27, 2014:  For people in the United States, an extraordinary series of lunar eclipses is about to begin.
The action starts on April 15th when the full Moon passes through the amber shadow of Earth, producing a midnight eclipse visible across North America. So begins a lunar eclipse tetrad—a series of 4 consecutive total eclipses occurring at approximately six month intervals.  The total eclipse of April 15, 2014, will be followed by another on Oct. 8, 2014, and another on April 4, 2015, and another on Sept. 28 2015.
"The most unique thing about the 2014-2015 tetrad is that all of them are visible for all or parts of the USA," says longtime NASA eclipse expert Fred Espenak.

splash
A new ScienceCast video explains the lunar eclipse tetrad of 2014-2015.  Play it!

On average, lunar eclipses occur about twice a year, but not all of them are total.  There are three types:
A penumbral eclipse is when the Moon passes through the pale outskirts of Earth’s shadow.  It’s so subtle, sky watchers often don’t notice an eclipse is underway. 
Auroras Underfoot (signup)

A partial eclipse is more dramatic.  The Moon dips into the core of Earth’s shadow, but not all the way, so only a fraction of Moon is darkened.
A total eclipse, when the entire Moon is shadowed, is best of all.  The face of the Moon turns sunset-red for up to an hour or more as the eclipse slowly unfolds.
Usually, lunar eclipses come in no particular order. A partial can be followed by a total, followed by a penumbral, and so on.  Anything goes. Occasionally, though, the sequence is more orderly. When four consecutive lunar eclipses are all total, the series is called a tetrad.

image
Click to view a complete visibility map of the April 15th lunar eclipse.

"During the 21st century, there are 8 sets of tetrads, so I would describe tetrads as a frequent occurrence in the current pattern of lunar eclipses," says Espenak. "But this has not always been the case. During the three hundred year interval from 1600 to 1900, for instance, there were no tetrads at all."
The April 15th eclipse begins at 2 AM Eastern time when the edge of the Moon first enters the amber core of Earth’s shadow.  Totality occurs during a 78 minute interval beginning around 3 o’clock in the morning on the east coast, midnight on the west coast.  Weather permitting, the red Moon will be easy to see across the entirety of North America.
Why red?
A quick trip to the Moon provides the answer: Imagine yourself standing on a dusty lunar plain looking up at the sky. Overhead hangs Earth, nightside down, completely hiding the sun behind it. The eclipse is underway.
You might expect Earth seen in this way to be utterly dark, but it's not. The rim of the planet is on fire! As you scan your eye around Earth's circumference, you're seeing every sunrise and every sunset in the world, all of them, all at once. This incredible light beams into the heart of Earth's shadow, filling it with a coppery glow and transforming the Moon into a great red orb.

Mark your calendar for April 15th and let the tetrad begin.

More information about the lunar eclipse may be found on NASA's eclipse home page

Source Report:
Author: Dr. Tony Phillips | Production editor: Dr. Tony Phillips | Credit: Science@NASA
http://www.ccssc.org/webcast.html 
http://science.nasa.gov/science-news/science-at-nasa/2014/27mar_tetrad/ 
http://spaceweather.com/ 

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