A space probing apparatus is provided that can further enhance its thermal protective function for electronic apparatuses and batteries that are apparatuses each having a narrow range of permissible temperature. The space probing apparatus includes, as a vehicle body 1 that is an apparatus body, an inner housing 13 that accommodates an electronic apparatus 11 and a battery 12, and an outer housing 15 that accommodates the inner housing 13 supporting the inner housing 13 afloat therein. A thermal insulating layer 16 is formed between the inner housing 13 and the outer housing 15 using a space therebetween. A heat dissipating body 17 is included in an upper portion of the inner housing 13. A lid 18 is included in an upper portion of the outer housing 15. The whole outer faces of the inner and the outer housings 13 and 15 are each covered with a thermal insulating material 20. Thereby, in the nighttime, the temperature of the battery 12 is maintained using the least necessary amount of heat generated and, thereby, the electronic apparatus 11 and the battery 12 are protected from an ultralow temperature. In the daytime, the lid 18 is opened and heat is discharged using the heat dissipating body 17 and, thereby, the electronic apparatus 11 and the battery 12 are protected from a high temperature.