Exoplanets: How We Discovered New Worlds and What They Mean for Humanity (Parent Q&A)

This guide supports a learner aged 11–16 studying exoplanets: planets beyond our Solar System. It explains how astronomers detect worlds they usually cannot photograph, how measurements reveal their sizes, masses and atmospheres, and why different methods find different kinds of planets. It also distinguishes evidence from possibility when discussing habitability and life. No life beyond Earth has been confirmed, and scientific uncertainty is a normal part of investigating distant worlds.