YOU SAID:
The structure and skeleton seem to either have been mounted upon, or are part of, a hemisphere just over one meter in diameter, composed of what appears to be the same unknown metal.
INTO JAPANESE
構造物と骨格は、同じ未知の金属と思われるもので構成された直径1メートル強の半球に取り付けられているか、その一部であると思われます。
BACK INTO ENGLISH
The structure and skeleton appear to be attached to or part of a hemisphere over one meter in diameter, composed of what appears to be the same unknown metal.
INTO JAPANESE
構造物と骨格は、同じ未知の金属と思われるもので構成された、直径1メートルを超える半球に付着しているか、その一部であると思われます。
BACK INTO ENGLISH
The structure and skeleton appear to be attached to or part of a hemisphere over one meter in diameter, composed of what appears to be the same unknown metal.
Come on, you can do better than that.