When what we predict and what we measure don’t add up, that’s a sign there’s something new to learn. Could it be a new fundamental force?
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Scientists put the most mysterious force in the Universe to the ultimate test. When it comes to the Universe, it’s easy to make the incorrect assumption that what we see is […]
The Universe is supposed to be the same everywhere and in all directions. So what’s that giant “cold spot” doing out there?
Holograms preserve all of an object’s 3D information, but on a 2D surface. Could the holographic Universe idea lead us to higher dimensions?
In general relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?
Some constants, like the speed of light, exist with no underlying explanation. How many “fundamental constants” does our Universe require?
We know it couldn’t have began from a singularity. So how small could it have been at the absolute minimum?
Cosmology is unlike other sciences. When our view of the Universe changes, so does our understanding of philosophy and science itself.
Today, the star-formation rate across the Universe is a mere trickle: just 3% of what it was at its peak. Here’s what it was like back then.
The inside of every black hole leads to the birth of a new Universe. Could our Universe have arisen from one?
The difference between predictions and observations of the magnetic properties of muons suggests a mystery for the Standard Model.
For many years, cosmologists have claimed the Universe is 13.8 billion years old. A new paper says no, it’s 26.7 billion. How do we decide?
With 5,000 square degrees of data, the Dark Energy Survey has something important to say. For as long as humans have been studying the Universe, we’ve yearned to know the answers […]
On larger and larger scales, many of the same structures we see at small ones repeat themselves. Do we live in a fractal Universe?
It started with a bang, but won’t end with one. Instead, it will “rage against the dying of the light” like nothing you’ve ever imagined.
The Multiverse fuels some of the 21st century’s best fiction stories. But its supporting pillars are on extremely stable scientific footing.
Ever since the start of the hot Big Bang, time ticks forward as the Universe expands. But could time ever run backward, instead?
Look out at a distant object, and you’re not seeing it as it is today. It’s size, brightness, and actual distance are all different.
In all the Universe, only a few particles are eternally stable. The photon, the quantum of light, has an infinite lifetime. Or does it?
Has all this happened before, and will all this happen once again? There are only a few questions, when we ask them, that force us to reckon with the fundamental nature […]
There are two methods to measure the expansion rate of the Universe. The results do not agree with each other, and this is a big problem.
It’s been precisely 13.8 billion years since the Big Bang occurred. Here’s how we know.
The majority of the matter in our Universe isn’t made of any of the particles in the Standard Model. Could the axion save the day?
Do the laws of physics place a hard limit on how far technology can advance, or can we re-write those laws?
The Universe is 13.8 billion years old, going back to the hot Big Bang. But was that truly the beginning, and is that truly its age?
Even if we traveled at the speed of light, we’d never catch up to these galaxies.
Just 13.8 billion years after the hot Big Bang, we can see 46.1 billion light-years away in all directions. Doesn’t that violate…something?
When you mix science with speculation, you get speculation. But the underlying science is still real. Whenever you hear the phrase, “it’s just a theory,” it should trigger alarm bells in […]
It’s the origin of our entire observable Universe, but it’s still not the very beginning of everything.
Or is ‘new space’ created in between the gaps of the ‘old’ space? It’s been almost 100 years since humanity first reached a revolutionary conclusion about our Universe: space itself doesn’t […]