After A Week On Android, Vine Surpasses Instagram On Google Play Charts As Top Social App. After months of speculation, the fate of Waze, the social-mapping-location-data startup, is finally decided: Google is buying the company, giving the search giant a social boost to its already-strong mapping and mobile businesses.
The GPS satellites are not in geo-stationary orbit, but instead orbit twice every time the Earth rotates once. This means that for any observer the satellites appear to orbit once overhead each day.
At that distance, it takes the satellite 24 hours to circle the planet. Since it also takes Earth 24 hours to spin on its axis, the satellite and earth move together. 3. Elliptical Orbit-A satellite in elliptical orbit follows an oval-shaped path.