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Scientists across the world are puzzled [as / was] to why there are flashes appearing on the surface of the moon. This [unusually / unusual] phenomenon has been [happening / happened] several times a week. Sometimes the flashes of light are very [shortening / short] , while at other times the light lasts longer. Scientists have also observed that [on / in] occasion, there are places on the moon's surface that darken [temporary / temporarily] . Experts on the moon have been speculating [in / on] what is behind the flashes. One scientist said the impact [for / of] a meteorite can cause the moon's surface to glow briefly. Another scientist wondered whether the flashes [occurrence / occurred] when electrically charged particles of solar wind [reacted / reactor] with moon dust.

A [lunar / lunacy] telescope has been set up in Spain to observe what is happening on the moon. The head of the team [beyond / behind] the telescope is Hakan Kayal, a professor of space technology. He said: "Seismic [activates / activities] were observed on the moon. When the [surface / surfaced] moves, gases that reflect sunlight could escape from the [posterior / interior] of the moon. This would explain the [luminous / luminary] phenomena, some of which [last / lastly] for hours." He added: "The so-called transient lunar phenomena have been known [for / since] the 1950s, but they have not been sufficiently observed." Professor Kayal said: "Anyone who wants to build a lunar [basis / base] at some point must of course be familiar with the [local / locally] conditions."

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