2018’s closest new supermoon on July 13

earthsky.org | 7/12/2018 | Bruce McClure
urbanagirl3 (Posted by) Level 3
Click For Photo: http://en.es-static.us/upl/2015/01/moon-new-lg-300x169.jpg

New moon = no moon. A new moon is more or less between the sun and Earth. Its darkened side is turned toward Earth. It travels across the sky with the sun during the day, hidden in the solar glare.

2018 will have three new moon supermoons in a row, which are defined as new or full moons at or near their closest to Earth for that particular month. 2018’s new supermoons fall on June 13, July 13 and August 11. Thus this next new moon on July 13 is a supermoon; in fact, it’s the closest and largest of the three.

New - Moon - July - UTC - July

New moon falls precisely on July 13, 2018, at 2:48 UTC; that is July 12 at 10:48 p.m. EDT., 9:48 p.m. CDT and so on.

You don’t typically see a new moon, not even a new supermoon, but Earth’s oceans will feel it. This extra-close new moon will combine with the gravitational pull of the sun to give rise to wide-ranging spring tides – tides that are extra high and extra low – in the few days following July 13.

People - Earth - Southern - Hemisphere - July

Plus, a few people in Earth’s Southern Hemisphere will glimpse this July 13 new moon. At least, they’ll see the new moon silhouette, or part of it, during a partial solar eclipse on July 13. A month from now, people at high latitudes in the Northern Hemisphere will be able to view the new supermoon during a second partial solar eclipse, on August 11.

Why no eclipse at every new moon?

Moon - Moon - Apogee - Earth - Month

This is a full moon, not a new moon, at apogee (farthest from Earth for the month, and so smaller than usual in our sky). It’s superimposed on a young crescent moon near perigee (closest to Earth for the month). The size difference between a moon at perigee and one at apogee is...
(Excerpt) Read more at: earthsky.org
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