Exoplanets: Beyond Our Solar System

The video discusses exoplanets, which are planets outside our solar system. Detecting them requires special techniques since they don't emit light. Astronomers look for changes in star brightness to find exoplanets. The European Southern Observatory in Chile uses advanced telescopes and techniques like gravitational microlensing to discover Earth-sized planets. This research is new but promises insights into our planet's formation and future.

What significant discovery was made at the European Southern Observatory?

How has the study of exoplanets contributed to our understanding of Earth?