Categories: Moon

Full Moon Tonight February 25, 2013

CAPE CANAVERAL, Florida — There will be a Full Moon tonight beginning at 3:26 p.m. Eastern Standard Time on February 25, 2013.
But the total Full Moon on Monday will not be readily visible because tonight’s moonrise time does not occur until 6:26 p.m. Nevertheless, it should make for a spectacular moonrise over the Atlantic Ocean if the Full Moon is not obscured by rain clouds.
For those planning a stroll along the beach to watch the Full Moon, or to take advantage of some great surf fishing, the Full Moon brings along with it a 3.5 foot high tide that will occur at 7:30 p.m. Eastern Standard Time.
2013 Phases of the Moon: NASA Animation
The NASA animation below shows at hourly intervals, the geocentric phase, libration, position angle of the Moon’s axis, and apparent diameter of the Moon throughout the year 2013. Topographic measurements by the Lunar Orbiter Laser Altimeter aboard the Lunar Reconnaissance Orbiter make it possible to simulate shadows on the Moon’s surface with unprecedented accuracy and detail.

“Thanks to Lunar Reconnaissance Orbiter, we now have excellent terrain maps of the Moon that can tell us the elevation at any point on the surface,” said Ernie Wright, author of the new video from the Scientific Visualization Studio (SVS). “I use those maps to make the Moon sphere bumpy in all the right places. That allows the rendering software to realistically simulate all the shadows and the ragged terminator (the dividing line between day and night).”

The Moon always keeps the same side to us, but not always the same face. Because of the tilt and shape of its orbit, Earth observers see the Moon from slightly different angles over the course of a month. When a month is compressed into 24 seconds, as it is in this animation, the changing view of the Moon makes it look like it is wobbling. This wobble is called libration.

The most noticeable monthly variation in the Moon’s appearance is the cycle of phases, caused by the changing angle of the Sun as the Moon orbits the Earth. The cycle begins with the waxing (growing) crescent Moon visible in the west just after sunset. By first quarter, the Moon is high in the sky at sunset and sets around midnight. The full Moon rises at sunset and is high in the sky at midnight. The third quarter Moon is often surprisingly conspicuous in the western sky long after sunrise.

Image Credit: NASA

Video Credit: NASA/Goddard Space Flight Center Scientific Visualization Studio


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