The gravity force-carrying particle with spin 2.
Graviton Term Timeline in A Brief History of Time
The timeline below shows where the term Graviton appears in A Brief History of Time. The colored dots and icons indicate which themes are associated with that appearance.
...earth, can create a large overall gravitational force. A particle of spin 2 called the graviton carries this force. Because it has no mass, the graviton can travel great distances. Although... (full context)
Another class is the electromagnetic force. This affects only electrically-charged particles like electrons, but not gravitons. It is much stronger than gravity, and comes in the form of positive or negative... (full context)
In the 1970s, a possible solution was offered, called supergravity. It combined the graviton, the gravity wave-carrying particle, with other particles with different spin. These were all considered different... (full context)
...strings. Gravity passing from the sun to the earth would previously be seen as a graviton passing from one to the other. String theory creates an H-shaped pipe, where the vertical... (full context)