The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

The story begins with the black hole information paradox. According to relativity, anything that falls into a black hole is ...

A mysterious object found deep in the cosmos could soon have astronomers rethinking what they know about dark matter. ...

A new study published in the Journal of Cosmology and Astroparticle Physics proposes an alternative model which gives the universe an expiration date. According to this new model, everything will come ...

Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an ...

For decades, astronomers have believed that dark matter and dark energy make up most of the universe. However, a new study ...

What if the universe remembers? A bold new framework proposes that spacetime acts as a quantum memory. For over a hundred ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if it's negative?

According to the model, dark matter may have started as particles that were hot, light, massless, and fast. As the universe ...

Black holes are eaters of all things, even radiation. A new study published in Physical Review Letters suggests that black ...

WASHINGTON (Reuters) - New data involving millions of galaxies and luminous galactic cores is providing fresh evidence that the enigmatic and invisible cosmic force called dark energy - responsible ...

Distant, ancient galaxies are giving scientists more hints that a mysterious force called dark energy may not be what they thought.See an excerpt of an interview in the video aboveAstronomers know ...