Images of lunar eclipse and solar eclipse by Nasa

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Unlike a solar eclipse, which can only be viewed from a certain relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of the Earth. As seen from the Earth, a solar eclipse occurs when the Moon passes between the Sun and the Earth, and the Moon fully or partially covers the Sun.

Orbit 31 miles above the lunar surface, NASA's Lunar Reconnaissance Orbiter (LRO) of the probe will have a "ringside seat" for the total lunar eclipse on 15 June, Petro said Noah, project scientist for LRO at NASA's Goddard Space Flight Center Partners in Greenbelt, Maryland

A lunar eclipse occurs when the moon passes through Earth's shadow, and a total lunar eclipse occurs when Earth, the sun is covered completely, causes a dark and the moon appear to change color. However, the Moon is not completely disappear in the darkness, because it is the atmosphere of the Earth (breaks) the indirect light on the moon, the low lighting doubled. Since the indirect light has to prevent the Earth's atmosphere before landing on the moon, clouds or dust in the atmosphere, pass certain colors in the sunlight that the moon appears to change color, often yellow, orange or red. The exact color varies from Eclipse, depending on the weather at the time.

15th June lunar eclipse will be visible, at least in part, worldwide except North and Central America. "But see, the LRO will be watching, so that each gets a close up of her," said Petro. The eclipse starts at 17.24 Universal Time Clock (UT), is the darkest in the world, or 07.22 clock 21:02 TU TU, and ends shortly after 23:00 UT clock. During this eclipse the Moon's orbit near the center of the darkest part of Earth's shadow, called the shadow so that the depth of darkness will take a long time - only an hour and 40 minutes. Unlike a solar eclipse, a lunar eclipse is safe to do without special equipment.

Diviner Lunar Radiometer instrument LRO is the record speed with the different areas on the side of the moon to cool off during the eclipse. Of large rocks cool more slowly than a fine or a dusty surface, Devin will be able to see which areas are covered with stones and what areas are covered with dust.

"This is an unprecedented opportunity to learn more about the uppermost millimeters of the moon," says lead researcher David Devin Paige of the University of California at Los Angeles. "Devin, to work continuously during the total solar eclipse plans and referred to the ten regions. The ten sites represent a large number of the lunar surface. Some are made of fine, others are rocky and there are a variety of compositions, including black lunar rich iron mare and the light, lunar highlands with low iron content. Counter target time of these functions before, during and after the eclipse, we can observe how different areas respond to the sudden drop in temperature. "

"The moon rotates slowly - a complete day-night cycle lasts 29 days on the earth," said Petro. "Morning and evening twilight on the moon long, and usually the lunar surface, it cools and warms slowly. This eclipse is a special opportunity to see how you" turn off "fast the sun. 'S, as if a cake from the oven and into the freezer to cool down without them first. We want to see how the moon's surface meets this sudden change of temperature, "said Petro.

Timers observations complement measurements of surface roughness of other instruments, because you advise LRO guess that just is below the surface, can, depending on Petro. "Could see LRO camera and a laser altimeter, a flat and dusty, but see that the divine unusually slow cooling, which is told to hide large blocks of material under a thin layer of dust," said Petro.

The eclipse has some unusual conditions for the RSO to Petro. RSO solar powered with battery backup during his trip about an hour, the dark side of the moon during each orbit. RSO other instruments will be turned off to save energy imposed during the long night of the eclipse, the probe is to endure a long period of intense cold.

"It is like under my car off the road. This is not really designed for this, but can handle tours limited," said Petro. This is the first time RSO operates an instrument during a total lunar eclipse, so Petro, and is the longest solar eclipse during the lifetime of the mission.

Paige and his team carried out observations guess, with funding from the branch of the science mission of NASA, NASA Headquarters in Washington. NASA Goddard mounted administers and RSO.


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