If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe ...

For two decades, scientists believed the cosmological constant, known as λ (lambda), was positive. That meant the Universe ...

Why is the universe expanding at an ever-increasing rate? This is one of the most exciting yet unresolved questions in modern ...

On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

The “dark energy” field that has fueled the expansion has been weakening over the past 4 billion to 5 billion years, new data shows.

The bold question-askers at What If investigate what would happen if the universe stopped expanding.

If recent discoveries that dark energy is evolving hold any water, our Universe will collapse under its own gravity on a ...