Author: Nilakshi Veerabathina, Professor of Physics Instruction, University of Texas at Arlington

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. What is space made of – what does gravity actually bend? – Phil, age 12, Birmingham What comes to mind when you think of space? Imagine a friend boasting about a spacious building, stadium or museum they recently visited. Do you envision the building as vast and expansive? Is it simply very large, or does it seem empty? The word spacious does not necessarily mean empty. It simply indicates that there is enough room to…