What fundamental hurdle prevents direct, in-situ exploration of exoplanets?

Answer

The vast distances (light-years involved) separating us from these worlds.

The immense scale of interstellar space makes sending a probe to an exoplanet a scenario currently confined to science fiction.

What fundamental hurdle prevents direct, in-situ exploration of exoplanets?

#Videos

The Best Earth-like Exoplanet Has 4 Major Problems - YouTube

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