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

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 ...

Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now. The universe is nearing the halfway point of what may be a 33-billion-year lifespan, according ...

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

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 ...

How did the universe come into being? There are a multitude of theories on this subject. In a Physical Review Letters paper, ...

IT IS ONE of the biggest mysteries in cosmology—and getting bigger all the time. Ever since Edwin Hubble, an American astronomer, published observations of distant galaxies in 1929, scientists have ...

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

His latest book, Discordance, fits into ... as the Universe grows older. Thus, the term is a misnomer. But many astronomers and physicists still prefer this well-established terminology over the ...