 Okay, in 2500 BC. Number two, I'm saying, look at the sky. We call solar nebulae. A solar nebulae is what we see from a supernova when a star explodes. It leaves a gas cloud. Because of our radio telescopes that we have now today, we can look deep into space and we can actually count the number of solar nebulae that are there. And how many are there? A supernova, a