The almost impossibly brief Planck time has been known since the 19th century. Originally dismissed as a mere curiosity, it may hold the key to understanding the universe.

These three quantities are known as the Planck mass (which comes out to about 22 micrograms), the Planck time (around 10-43 seconds), and the Planck length (about 10-35 meters).

The proton is about 100 million trillion times larger than the Planck length. To put this into perspective, if we scaled the proton up to the size of the observable universe, the Planck length would ...

The Planck team says these data are refining what we know about our universe, making more precise measurements of matter, including dark matter, and how it is clumped together.

Before that threshold (specifically, before the end of the first Planck time after the Big Bang began), it's tough to make ...

The new pictures of the CMB are at a higher resolution than those produced more than a decade ago by the Planck mission, a space-based telescope designed to observe the CMB.

In trying to explain the origins of the Universe scientists have taken a step-by-step approach, and ESA’s Planck is currently at the top of the staircase. Several experiments, both on Earth and ...

What we saw in the DESI experiments, and now strengthened by our South Pole Telescope observations, is that dark energy is ...

Taken at face value, the faster rates these teams are getting could mean that the universe is actually around a billion years younger than the canonical 13.8 billion years from Planck and ACT.

If our 13.8 billion-year-old cosmos could be considered middle-aged, researchers note these new images captured around its 380,000th birthday represent a snapshot of the universe as a newborn.

By about t + 370,000 years, neutral hydrogen formation had wound itself down, leaving the Universe transparent for the first time. But not all the matter formed by Big Bang nucleosynthesis ...