Humans have axial and appendicular skeletons. The skeleton serves as protection for internal organs and as points of attachment for muscles to allow movement and locomotion for life on earth in a gravitational field. What could a human skeleton look like after years of space travel and living? What can be done to preserve the skeleton for normal life on earth (or any planet with comparable gravity)? Mention the twin studies recently completed on an astronaut and his earth-bound twin brother and how their bone health fared by comparison!Initial post must be 150 word in length, written in APA format, unsing in-text citations as needed.