Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

“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 ...

Now physicists from the University of Washington are taking a big swing at answering that question. All matter exerts gravitational force. The more mass the object has, the greater the force. Yet, a ...

We could go out with a crunch, and not a bang. Contrary to popular belief, our universe may not be constantly expanding after all. A groundbreaking study by South Korean researchers suggests that dark ...

Astronomers have spotted what may be one of the universe’s earliest barred spiral galaxies — a striking cosmic structure forming just 2 billion years after the Big Bang. The galaxy, COSMOS-74706, ...

A mouse that travelled aboard China’s Tiangong Space Station has produced 28 pups after returning to Earth, offering rare insight into how microgravity may influence mammalian reproduction.

This new series from India Today Science explores the why and how behind everyday phenomena we notice, question, and often ...

Russia's cyber attack on the Viasat network on the first day of its invasion of Ukraine in February 2022 was the most ...

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

An astrophysicist explains what wormholes are and how these theoretical space-time tunnels have popped up in the solutions to a set of decadesold equations.