technosphere

Deductions

• shell of an astronomical object is for example technosphere ⇐ (technosphere is a shell of an astronomical object), (is a is inverse of is for example)
• technosphere is a shell of an astronomical object ⇐ (geographic envelope is subclass of shell of an astronomical object), (technosphere is a geographic envelope)
• geographic envelope is for example technosphere ⇐ (technosphere is a geographic envelope), (is a is inverse of is for example)