Editing Light cone (section)

{{Short description|Set of spacetime events, light-connected to a given event}}
{{Not to be confused with|Cone cell|Cone of light}}
[[Image:World line.svg|300px|right|thumb|Light cone in 2D space plus a time dimension more commonly referred to as ‘Space Time’.]]
{{Special relativity sidebar}}

In [[special and general relativity]], a '''light cone''' (or "null cone") is the path that a flash of light, emanating from a single [[Event (relativity)|event]] (localized to a single point in space and a single moment in time) and traveling in all directions, would take through [[spacetime]].