When looking into the night sky, besides the moon (and the occasional man-made satellites), you are seeing two realms: the fixed stars and the planets. (Yes, I know there are also comets and meteors. Let's focus on the horses before jumping to zebras.) The fixed stars, so called because their position in the sky never changes; if you know your position on the earth and the time of day, you can find any fixed star. The realm of the fixed stars is called the celestial sphere (there is some history behind that designation; not for now). The planets -- which is Greek for "wanderers" -- wander around the sky. (Feel free to Google any of those or sign up for Overview of Physical Sciences that I plan to teach some time in the future at HTC, בעזרת השם.) The word מַזָל actually means "constellation." (By the way, Google translate is so sure you want the common usage --"luck" or "fortune" -- that I had to play some tricks to finally get the literal tra...
This is a paraphrase of the pasuk in t'hillim 84:7 -- "mei'chayil el chayil" -- which means "from strength to strength". In this case, it is my thoughts and ideas to those who are strong enough to be interested :)