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 ...

Called the Dark Energy Spectroscopic Instrument, it uses a telescope southwest of Tucson, Arizona to create a ...

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

A new theory claims dark matter and dark energy don’t exist — they’re just side effects of the universe’s changing forces. By rethinking gravity and cosmic timelines, it could rewrite our ...

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 ...

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 a star, its initial mass is everything. It determines how quickly it burns through its hydrogen and how it will evolve once it starts fusing heavier elements. It’s so well understood that ...

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"If these results are confirmed, it would mark a major paradigm shift in cosmology since the discovery of dark energy 27 years ago." When you purchase through links on our site, we may earn an ...