Scientists across  world are puzzled as to why there are flashes appearing on  surface of  moon. This unusual phenomenon has been happening several times  week. Sometimes the flashes of light are very short, while at other times  light lasts longer. Scientists have also observed that on occasion, there are places on  moon's surface that darken temporarily. Experts on  moon have been speculating on what is behind  flashes. One scientist said the impact of  meteorite can cause  moon's surface to glow briefly. Another scientist wondered whether the flashes occurred when electrically charged particles of solar wind reacted with moon dust.
 lunar telescope has been set up in Spain to observe what is happening on the moon. The head of  team behind the telescope is Hakan Kayal,  professor of space technology. He said: "Seismic activities were observed on  moon. When  surface moves, gases that reflect sunlight could escape from  interior of the moon. This would explain  luminous phenomena, some of which last for hours." He added: "The so-called transient lunar phenomena have been known since  1950s, but they have not been sufficiently observed." Professor Kayal said: "Anyone who wants to build  lunar base at some point must of course be familiar with  local conditions."