Drive to Pluto would take 6000 years by car, still in our backyard: Know how big is space, 2 trillion galaxies, endless stars

Space is unimaginably massive — so big that it’s hard for the human brain to even picture it. If you tried driving to Pluto, the faraway dwarf planet at the edge of our solar system, it would take about 6,000 years, even at highway speeds. And Pluto is still extremely close compared to the rest of the universe.

No Clear Edge
One of the most fascinating facts about space is that it doesn’t have a definite end. There’s no solid wall or border where the universe stops. Instead, what we can see is known as the "observable universe," and even that is incredibly vast. Beyond what we can observe? It’s a complete mystery — it could go on forever, or loop back around in ways we can’t yet understand.

Size of the Observable Universe
The observable universe stretches across about 93 billion light-years. That’s not a typo — billion. One light-year is the distance light travels in a year, and that’s around 9.5 trillion kilometres (or 5.9 trillion miles). Multiply that by 93 billion, and you start to get a sense of just how huge space really is.

Galaxies, Stars, and Planets Without End
Within this massive space, there are approximately 2 trillion galaxies. Each galaxy holds millions or even billions of stars. That means the total number of stars in the observable universe is over 100 sextillion — that’s a 1 followed by 23 zeroes! And with each star potentially hosting planets of its own, the number of planets is likely even higher.

The Universe Keeps Growing
Even as you read this, the universe is still expanding. Scientists believe that a mysterious force called dark energy is causing space itself to stretch out more and more every second. So, the universe isn't just big — it's getting even bigger.

Our Reach Is Still Tiny
Despite sending missions to the Moon and even landing rovers on Mars, humans have barely scratched the surface of space. In fact, our entire space exploration history is like dipping a toe into a vast cosmic ocean.

In short, space is not just big — it’s mind-blowingly massive. And the more we learn about it, the more we realise how much more there is to discover.