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

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 ...

On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but it does have an end. The generally accepted long-term evolution of the ...

Most explanations rely on "dark energy" to explain the Universe's accelerating expansion rate, but a new study takes a different path.

The plot represents the new model with the x-axis and the y-axis showing the minimum sizes of collapsing and expanding regions that can impact cosmological measurements. The contours are independent ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density – given that the universe contains a lot of relatively empty space, could ...

His latest book, Discordance, fits into the class of conventional popular cosmology ... the measured rate of the Universe’s expansion — a key parameter in cosmology since its introduction in 1929.

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of ...