Astronomy
Space Planets: Worlds Beyond Earth
Quick fact
The first confirmed exoplanet orbiting a Sun-like star was discovered in 1995. Since then, thousands have been found, some in the habitable zone where liquid water could exist.
Why this is interesting
You've heard of planets in our solar system, but did you know that almost every star in the night sky might have its own family of planets? What are these distant worlds like?