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Dark Energy
JWST has brought us more distant views of the early Universe than ever before. Is the Big Bang, and all of modern cosmology, in trouble?
Cosmologists are largely still in the dark about the forces that drive the Universe.
It may be time for a cosmological paradigm shift.
When white dwarfs explode, they create a type Ia supernovae. After decades of following the leading theory, here's the complete overhaul!
With a finite 13.8 billion years having passed since the Big Bang, there's an edge to what we can see: the cosmic horizon. What's it like?
The zero-point energy of empty space is not zero. Even with all the physics we know, we have no idea how to calculate what it ought to be.
Dark energy is one of the biggest mysteries in all the Universe. Is there some way to avoid "having to live with it?"
An incredible composite image of Pandora's Cluster, Abell 2744, simultaneously showcases both our impressive knowledge and vast ignorance.
Since its observation discovery in the 1990s, dark energy has been one of science's biggest mysteries. Could black holes be the cause?
From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger.
From the earliest stages of the hot Big Bang (and even before) to our dark energy-dominated present, how and when did the Universe grow up?
The Universe isn't as "clumpy" as we think it should be.
The difference between predictions and observations of the magnetic properties of muons suggests a mystery for the Standard Model.
Yes, dark energy is real. Yes, distant galaxies recede faster and faster as time goes on. But the expansion rate isn't accelerating at all.
As time goes on, dark energy makes distant galaxies recede from us ever faster in our expanding Universe. But nothing truly disappears.
All the things that surround and compose us didn't always exist. But describing their origin depends on what 'nothing' means.
We confidently state that the Universe is known to be 13.8 billion years old, with an uncertainty of just 1%. Here's how we know.
We're used to scientists telling us about the math and physics behind astronomical events. But what does studying space make us feel?
We know the Universe is expanding, but scientists don't agree on the rate. This is a legitimate problem.
Early relics and late-time objects give incompatible results for the expanding Universe. This independent anomaly intensifies the problem.
Holograms preserve all of an object's 3D information, but on a 2D surface. Could the holographic Universe idea lead us to higher dimensions?
From the tiniest subatomic scales to the grandest cosmic ones, solving any of these puzzles could unlock our understanding of the Universe.
The Big Bang is commonly misunderstood, warping our understanding about the Universe's size and shape.
The theory is accurate within at least one part in a quadrillion.
No matter how good our measurement devices get, certain quantum properties always possess an inherent uncertainty. Can we figure out why?
From black holes to dark energy to chances for life in the Universe, our cosmic journey to understand it all is just getting started.
Our model of the Universe, dominated by dark matter and dark energy, explains almost everything we see. Almost. Here's what remains.
The anthropic principle has fascinating scientific uses, where the simple fact of our existence holds deep physical lessons. Don't abuse it!
In all the Universe, only a few particles are eternally stable. The photon, the quantum of light, has an infinite lifetime. Or does it?
Ever since the start of the hot Big Bang, time ticks forward as the Universe expands. But could time ever run backward, instead?