The stars you see at night are real and existed long ago.
* Light travel time: The light from stars takes time to reach us. Even the closest stars are so far away that their light takes years to travel to Earth. So, when you look at a star, you're seeing light that was emitted years, even centuries, ago.
* Some stars may not exist anymore: It's possible that some stars you see have already died out, but their light is still traveling towards us. We won't know they're gone until their light stops reaching us.
But, here's the catch:
* Stars change: Stars are constantly evolving and changing. While you see a star as it was years ago, that star itself may have gone through significant changes since then. It might be brighter, dimmer, or even a different color now.
So, are they "present" in the same way you are present in this moment? No. You're experiencing them as they were in the past, based on the light that has finally reached your eyes.
In a way, you're looking into the past when you gaze at the stars!
