2000
导演:Marcia Bartusiak
We all know that water and sound move in waves-but gravity? In Marcia Bartusiak's new book, we are introduced to the physics of gravity waves-or vibrations in space-time. We learn about the new generation of observatories, now being completed worldwide, that will give astronomers not just a new window on the cosmos but a whole new sense with which to explore the heavens. Inst...(展开全部)