The speed of light in a vacuum is 299,792,458 m/s (≈300,000 km/s)
We do not see the Sun; we see the place in our sky where it was 8 minutes ago. In reality, the Sun has already set beyond the horizon 8 minutes ago, but we still see its sunset. In fact, we do not see the moon, but the place in the night sky where it was 2 seconds ago.
In reality, many stars no longer exist. We must come to terms with the fact that many of them have long since extinguished, and we only see what they once were. Their light... Looking at the sky, we always see the past. We see the ghosts of the universe...
When our Sun goes out, we will only know about it 8 minutes later. If it happens at night and during a full moon, we will know about it only 8 minutes and 4 seconds later. The Sun will be gone, but I will have time to smoke a whole cigarette before I realize it.
Then, the world will plunge into eternal twilight of long-extinguished stars. Only what no longer exists will illuminate us and our planet.
But for many billions of years to come, our Sun will be a star in someone else's sky. In someone else's sky, but no longer in ours...