A new set of precision distance measurements made with an international collection of radio telescopes have greatly increased the likelihood that theorists need to revise the “standard model” that ...

Instead, they looked at light that has traveled for seven billion years to reach us, effectively taking the Universe's ...

A team of astronomers has discovered the largest and most distant water reservoir ever detected in the universe, surrounding a quasar more than 12 billion light-years away. The finding pushes the ...

Hubble’s updated view of NGC 3370, richer in light and detail than ever before, deepens our understanding of both the galaxy and the cosmos itself. This new Hubble Picture of the Week highlights a ...

Space, as we all know, is big. In fact, it’s more than big; it’s vastly, hugely, mind-bogglingly big. But how big is that, exactly, and how do we go about assigning actual, quantifiable distances ...

Trying to measure the size of the universe is no easy task. We know that the universe is expanding, though the exact rate of this expansion is not yet fixed. So one method that astronomers use to tell ...

Wormholes, conceptual tunnels slicing through spacetime, offer a theoretical shortcut between two distant cosmic points.

To the unaided human eye, the night sky is resplendent with over 9,000 individual points of light, but that perspective covers only a bare fraction of the universe. When you purchase through links on ...

If you were to go as far out into space as you can imagine, what would you encounter? Would there be a limit to how far you could go, or could you travel a limitless distance? Would you eventually ...

Hubble's law explains that the reason most galaxies are moving away from one another is because the whole universe is expanding. Pick any two galaxies at random, and the chances are they’re moving ...

A cosmic measurement technique independent of all others adds strong evidence pointing to a problem with the current theoretical model describing the composition and evolution of the Universe. A new ...