Solar power is a renewable resource that can be much less expensive than oil. However, due to weather and the night, it is much less reliable. Scientists in Scotland are trying to make a solar satellite capable of taking in solar energy in orbit and beaming it down to Earth. The energy would be sent to Earth using microwaves or lasers. The person leading this project, Dr Massimiliano Vasile, says that the energy could be used in disaster stricken areas where emergency power is needed. The problem is that it is very expensive to put satellites into orbit. Also, finding materials light enough to send into space is very difficult.
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