After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of ...

The universe is expanding, and while that fact is fascinating, it also creates a question that trips people up: if it’s growing, what exactly is it expanding into? Our brains are used to picturing ...

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 ...

For more than two decades, the standard model of cosmology has stood as a reliable guide to the universe. Known as Lambda Cold Dark Matter, or ΛCDM, it weaves together dark energy, dark matter, and ...