Exploration method, exploration system, space probe, hydrogen supply method, and image processing method

An exploration method comprising:

• a step of
• moving a space probe including a solar cell, which is configured to travel on a moon surface, to a position at which the space probe can be exposed to sunlight on the moon surface, or
• landing a lander including the solar cell at a position at which the lander can be exposed to the sunlight on the moon surface;
• a step of digging a soil of a recess corresponding to permanent shadow which a satellite of a planet, a minor planet, or a planet has;
• a step of acquiring a water by collecting or liquefying vapor obtained by evaporating through heating, ice included in soil or by liquefying the ice included in soil or a rock, or the block of ice in the recess located in the permanent shadow;
• and
• a step of generating, by the solar cell disposed on a moon surface other than the permanent shadow, power,
• wherein in the acquiring step, the water is acquired by collecting vapor obtained by evaporating ice through heating of soil or a rock or a block of ice using the generated power.