Final answer:
To convince researchers of discovering life on another planet, the entity should replicate, use energy, and be cellular. Populations evolving over time would provide further evidence.
Step-by-step explanation:
To convince researchers that they have discovered life on another planet, the entity they discovered would have to replicate, use energy, and be cellular.
This would indicate that the entity is alive and exhibits fundamental characteristics of life.
Additionally, if the population of the entity evolves over time, it would provide further evidence of life on another planet.