The Global Positioning System (GPS) is a network of about 30 satellites orbiting the Earth at an altitude of 20,000 km.
There are 435 voting members in the House of Representatives.
There are 435 members of the House of Representatives and 100 members of the Senate. There are also 5 non-voting delegates (Washington DC, Guam, American Samoa, US Virgin Islands, Northern Mariana Islands) and 1 Resident Commissioner (Puerto Rico).