Living with those engineers and my Mom put a lot of scientific facts in my head.

Plus, the speed of light often gets mentioned in a lot of the sci-fi novels I love to read, most esp. Star Trek. So, it's something I will never forget.

And oh, btw, my mother's name is Zenaida, and her friends often call her Zen. She's an artist too, so your username surely reminded me of her. :)