Understanding why, and determining the ultimate fate of the cosmos, depends on making more accurate measurements of distance across vast expanses of space. (discovermagazine.com)
These images are not pertinent to a generation which knows that above the earth is a vast expanse of space with planets and stars and into which we shoot space shuttles and communications satellites. (religion-online.org)
Astronomers frequently resort to such inferences to make discoveries, because observing planet - sized objects across the vast expanses of space remains really, really hard. (science.howstuffworks.com)