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The past, present and future all exist only in one moment, now. We live in the eternal now. Nonexistence can never be.
When you look into the sky at the stars, you are seeing into the past. If you were to go out far enough into space, you could actually observe the dinosaurs still walking about on the earth. Nonexistence can never be

yah, it hurts to think about XD

Light travels at the fastest speed possible, so if you are looking at a light near you, the only past you're looking into would be about 0.000023 seconds before

Did you know that when you snap the sound is actually of your finger hitting your palm, the delay in how you perceive sound is smaller than that of you seeing light

This is if I remembered correctly

99.9% of the visible stars in the sky could have exploded 100 years ago... we still would not see it or know.

Yes, we're all living in the past.

yes technically, though unless you're looking at outer space, it's essentially instantaneous

stars that are light years away are interesting though, cause what you're seeing is literally years in the past