New data from major dark-energy observatories suggest the universe may not expand forever after all. A Cornell physicist calculates that the cosmos is heading toward a dramatic reversal: after ...

“For the last 20 years, people believed that the cosmological constant is positive, and the universe will expand forever,” says Tye, a professor emeritus at Cornell. A positive constant acts like a ...

The science communicator, a disciple of Stephen Hawking, believes it will be decades before we colonize Mars. But he says we ...

The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark ...

This enormous chain of hundreds of galaxies—a cosmic filament—is twisting through space 400 million light-years away ...

Physicist Sean Carroll explains how physics, astronomy, philosophy, and classics all help us understand the expanding ...

The standard cosmological model (present-day version of "Big Bang," called Lambda-CDM) gives an age of the universe close to 13.8 billion years and much younger when we explore the universe at ...

Faint structures play a crucial role in cosmic development, and scientists are only just beginning to grasp their full extent and role in shaping the universe.

The universe has delivered the loudest gravitational wave ever recorded, and it appears to have given Einstein’s theory of ...

The research team used two distributed sensors and leveraged two quantum resources for increasing detection sensitivity: ...

Dan Trachtenberg's third Predator movie is the most substantial evolution of the sci-fi franchise to date and boldly embraces ...

Curious minds wonder about the universe's stars. Scientists estimate trillions of galaxies, each with billions of stars, leading to a mind-boggling total of 10²² to 10²⁴ stars. This number, exceeding ...