| 摘要 |
[OBJECT] It is an object to solve a problem that a light-emitting element and a large-capacity battery required for allowing light generated from a satellite to be visually observed from the earth lead to enormously high costs. [SOLUTION] The present invention provides a satellite which comprises a reflecting mirror for reflecting sunlight toward the earth, and a transceiver, wherein the transceiver is operable to receive information including at least a position of the sun, a position of the satellite, and an irradiation point on the earth surface to be irradiated with the reflected light, so as to set a direction of a reflecting surface of the reflecting mirror based on the received information, and wherein the satellite is adapted to orient the reflecting surface of the reflecting mirror in the direction set based on the received information.
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