<p>Science @ NASA explains how a total lunar eclipse on the morning of April 15, 2014 will be the first of four consecutive total lunar eclipses, known as a tetrad. VPC</p><p>A montage of photos from a total lunar eclipse that occurred on Dec. 21, 2010.(Photo: Conrad Jung, Chabot Space and Science Center)</p><p>Sky watchers are getting ready for an evening of special viewing when a total lunar eclipse arrives just after midnight on April 15.</p><p>What's more, this begins a rare sequence of four total lunar eclipses expected over the next two years.</p><p><a href="http://www.usatoday.com/story/tech/2014/04/03/lunar-eclipse-april-15-blood-moon/7210901/">Keep reading...</a></p><p>Read also:</p><p><a href="http://au.ibtimes.com/articles/546647/20140404/2014-lunar-eclipse-where-best-view-total.htm">2014 Lunar Eclipse: How and Where To Best View Total Lunar Eclipse on April 15</a> (International Business Times AU)</p><p><a href="http://www.christiantoday.com/article/lunar.eclipse.april.15.2014.blood.moon.sign.of.end.times.when.to.watch/36566.htm">Lunar Eclipse April 2014: Four Blood Moons a sign of End Times? [Date, start time]</a> (ChristianToday)</p><p><a href="http://www.news-press.com/article/20140403/ENT13/304030029/Lunar-eclipse-visible-April">Lunar eclipse visible in April</a> (Lehigh Acres News Star)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dXBiQdRIcbxSx5MEvjSFtacQNxWLM&authuser=0&ned=us">163 additional articles.</a></p>