A more thorough explanation:

Definition: A remote possibility is a chance or likelihood of something happening that is very unlikely to occur. It is a double possibility that depends on two or more uncertain and contingent events.

Examples:

• There is a remote possibility that it will snow in the middle of summer.
• There is a remote possibility that the stock market will crash tomorrow.
• There is a remote possibility that aliens exist and will visit Earth.

These examples illustrate the definition of remote possibility because they all describe events that are highly unlikely to happen. They are dependent on multiple uncertain factors and are considered double possibilities.