The muscles and correct posture maintain the natural spinal curves. Good posture involves training your body to stand, walk, sit, and lie so that the least amount of strain is placed on the spine during movement or weight-bearing activities (see Posture).
There are roughly 500 billion galaxies in the universe, meaning there is somewhere in the region of 50,000,000,000,000,000,000,000 (5Ã1022) habitable planets. Iâll leave you to do the math on whether one of those 50 sextillion planets has the right conditions for nurturing alien life or not.
There are probably more than a hundred billion (10^11) galaxies in our visible universe. Source(s): http://www.atlasoftheuniverse.com/univer... A world is usually recognized as a planet, which usually resides in a universe, which itself is only part of a galaxy. So if you wanted a number, then the number would be zero, but the question is misappropriated. This one image when blown up to the size of a 10x8 foot wall has over 10,000 galaxies in it.