Why Humanity Will Never Leave The Solar System (Level 1)

Leaving our solar system is very hard. An invisible barrier of empty space traps us inside. Space is extremely big. The fastest real spaceship goes 635,000 km/h. It would still take 2,500 years to leave our solar system. Even if we could fly at 20% of light speed, reaching the nearest star takes 20 years. But going fast is dangerous. Space is not empty. Dust and small rocks hit the ship with huge force. A pebble can explode like a nuclear bomb. So we have a speed limit. Even if we survive, nearby stars have no pleasant planets. Alpha Centauri's worlds are deadly. Earth-like places are much farther away. Today, space travel is far too hard. But long ago, people said flying was impossible. Then we flew. We even landed on the Moon. Maybe one day we will find a way to the stars.