As per predictions given by experts, earth sky is all set to host a rare celestial event this Sunday. It will be for the first time in more than 30 years when supermoon and lunar eclipse will occur at the same time.

During the eclipse that takes place when the moon is closest to Earth during its elliptical orbit, earth's natural satellite will be plunged into darkness on Sunday evening.

According to the experts, this rare event is the first such eclipse since 1982, and the next will not be seen until 2033. Earth's shadow will darken NASA's Lunar Reconnaissance Orbiter (LRO) as well, and that's a bit of a concern for the solar-powered probe, they said.

So far, LRO has successfully survived three other lunar eclipses in past 17 months, so the spacecraft's handlers are confident it will come through this one safely as well.

Science operations planner Dawn Myers of NASA's Goddard Space Flight Center in Greenbelt, Maryland, said in a statement that they have a method, and they are sure it will work well. He said the situation is always stressful during the approach of the eclipse, but they follow the same procedures every time, and so far they have faced no trouble.

The procedure majorly involves shutting down LRO's systems to save battery power and simply riding out the eclipse until the sun came out again.

LRO deputy project scientist Noah Petro, said, "The rapid cooling of the surface during an eclipse gives us a view of how the top few centimeters cool differently than during a normal lunar night. From this, we learn about the size of particles at the surface".