抄録
Using the laser energy transmission technology, we have succeeded to fly a small airplane and a helicopter for a long time (infinite time in principle). Extrapolating the technology, it can be concluded that the technology is available for the near earth space mission in which we cannot use the solar energy such as the ice exploring rover in the bottom of the crater on the lunar polar region. For the application to a deep space mission is challenging, and looking the progress of LISA project (NASA-ESA), it is not impossible.
