The nature of dark energy is one of the most important unsolved problems in all of science. But what, exactly, is dark energy, and why do we even believe that it exists?
Astronomers have found evidence of a giant void that could be the largest known structure in the universe.
The nature of dark energy is one of the most important unsolved problems in all of science. But what, exactly, is dark energy, and why do we even believe that it exists?
Astronomers have found evidence of a giant void that could be the largest known structure in the universe.