Before revision: Since space exploration began, it has been [ observed that the extent of the ionosphere or plasmasphere is highly variable, and often much larger than previously appreciated, at times extending to the boundaries of the Earth's magnetosphere.
After revision: niuaegpuiwapifbepngvpsinfvwuinglsn,i ioi iterjtoirjg opt3fjwf jgijfg iowe9 qj if if ijf iqrg f2uerg fyur rf5nb 6rtc tc t rccr7Since space exploration began, it has been [ observed that the extent of the ionosphere or plasmasphere is highly variable, and often much larger than previously appreciated, at times extending to the boundaries of the Earth's magnetosphere.