A planet is a celestial body that (a) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (b) is in orbit around a star, and is neither a star nor a satellite of a planet.
It's Official: Apple Is Now Worth More Than Microsoft. UPDATE 3: Apple's market cap closed the day at $222.12 billion. Microsoft's closed at $219.18 billion. UPDATE 2: And now it really is official... As of early afternoon, Apple's market cap is now bigger than Microsoft's (see graphic below).
Updated: 06/30/2017 by. Founded in April 4, 1975 by Bill Gates and Paul Allen, today Microsoft is one of the largest and most successful companies in the world. Microsoft is the developer and distributor of Microsoft Windows , Microsoft Office, DirectX, XBOX, and numerous other programs and games.