Discovering several thousand planets beyond the solar system or exoplanets is a eureka moment for humans. In just twenty years of exploration, space-based and ground observations have turned up above 4,100 confirmed exoplanets in only some parts of the galaxy we searched until now.
If you add unconfirmed planetary candidates, this number jumps to cross 9,000. But the biggest payoff would be capturing evidence of a world, some light-years far away, hospitable to life. To find a planet like Earth, astronomers need to look for habitable zones around stars, and these habitable zones should not be too cold or too hot for liquid water to be present on the surface. But do they exist? READ MORE...
