Add Yahoo as a preferred source to see more of our stories on Google. A lonely telescope in the Arizona desert tracks millions of distant galaxies to determine the ultimate fate of the Universe ...

Dark energy may be the most mysterious substance ever proposed, but many scientists are certain it exists. Why?

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...

For a quarter century, cosmology has rested on a simple but audacious idea: that a fixed “cosmological constant” drives the ...

One of the greatest mysteries in cosmology is the nature of what we refer to as dark energy. This mysterious force drives the expansion of the universe to accelerate. Dark energy is an unknown ...

For decades, astronomers have believed that dark matter and dark energy make up most of the universe. However, a new study suggests they might not exist at all. Instead, what we perceive as dark ...

Welcome to the age of precision cosmology, a scientific era in which astronomers and physicists have measured almost everything about our universe—except for its deepest mysteries: dark matter and ...

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