* Light travels at a very fast speed: Light travels at approximately 299,792 kilometers per second (186,282 miles per second). That's incredibly fast!
* Light years measure distance: A light year is the distance light travels in one year. So, a star 37 light years away means it takes the light from that star 37 years to reach Earth.
* Time passes differently for you: Even though the light takes 37 years to reach Earth, you won't wait 37 years to see it. You'll age normally, and the light from the star will reach Earth during your lifetime.
Here's the breakdown:
1. You are 11 years old now.
2. The light from the star started its journey 37 years ago.
3. You'll be 11 + 37 = 48 years old when the light from that star reaches Earth.
Important Note: This assumes the star stays the same distance away from Earth, which isn't always true in the vastness of space.
