What is 30 degrees north and 105 degrees east

That looks very much like the description of a location on the Earth's
surface, using the familiar latitude and longitude coordinate system.

If that's what it actually is, and we use the description to find the point
on a globe or a map, we find that the point is located in south-central
China, about  73 miles  southeast of the center of the city of Chengdu, 
98 miles  west-northwest of the center of the city of Chongqing, and 
940 miles  southwest of the center of the capital city of Beijing.

While I have my maps out, I can tell you that the point is also roughly 
1,880 miles  west of Tokyo,   4,060 miles  east-northeast of Jerusalem,  
5,200 miles  east-northeast of Paris, and about  7,670 miles  almost
straight north of Washington DC.

The answer is the magnetosphere.