We don’t know what dark matter is but we do know it exists. We know what it’s not though and Kurz Gesagt does its thing with another animated video explainer trying to break down what dark matter and dark energy is. Which is basically, we know something is out there, it interacts with gravity and there is a lot of it.
Light speed is often spoken of as a cosmic speed limit … but not everything plays by these rules. In fact, space itself can expand faster than a photon could ever hope to travel.
The evolution of life is a 13.8 billion-year-long chain of events, from the Big Bang through the creation of chemical elements, galaxies, planets and the first self-replicating organisms. But without dark matter's influence, says an astrophysicist, it's hard to see how anything as complex as life could have emerged.
The going theory among cosmologists is that the universe will eventually rip itself to shreds owing to its ever-accelerating rate of expansion. Not so, say a pair of physicists who have just taken it upon themselves to reformulate an integral facet of general relativity: the cosmological constant.
It's not often that astronomy goes well with the book of Genesis. But this is a theory that evokes the line, "But of the tree of the knowledge, thou shalt not eat of it: for in the day that thou eatest thereof thou shalt surely die." In this theory, knowledge doesn't just kill you — it kills the entire universe.…
Forget UFOs — there are a lot of objects and events in space that are identified, but still completely incomprehensible. From planets in our solar system, to inexplicable energy bursts from across the universe, here are some of the enduring mysteries of the space and time we call home.
In the last century, we've learned that the universe is expanding. Dark energy, which accounts for about 70 percent of the stuff in the universe, is the mysterious phenomenon accelerating this expansion.
We have known for some time that the universe is expanding, and that its expansion is accelerating. But how do we know that? We'll show you how Edwin Hubble revealed that the universe is getting away from us.
The Universe is expanding at an accelerating rate and we’re not entirely sure why. To deal with the problem, scientists have conjured up dark energy, a mysterious force that permeates all of space. Now, a pair of physicists say the newly discovered Higgs boson could help explain where it all comes from.
An historian of science from New York University has re-interpreted a correspondence between Albert Einstein and Erwin Schrodinger in which the two scientists argued about the nature of the cosmological constant — a kluge that Einstein embedded in his general theory of relativity to explain why the Universe was…
A high-powered camera that NOAA calls "the most powerful sky-mapping machine ever created" has caught its first glimpse of some of the Universe's most far-flung galaxies — and they are an absolute wonder to behold.
Some say the universe will end with a new Big Bang. Others say the cosmos will eventually succumb to entropy. But what if neither of those things happens? A recent theory says the universe will just tear itself apart.
Just 30,000 years after the Big Bang, the universe started singing. Vast soundwaves rang out and expanded through the primordial cosmos, their ripples determining the universe's large-scale structure. And this all fits perfectly with one particularly theory of dark energy.
Right at the center of this image, there's a dim orange dot. Somewhere around that dot, one of the stars in a binary system once went supernova, creating the vast red gaseous remnant you see all around it.
This galaxy cluster is nicknamed El Gordo, which means "The Fat One" in Spanish. Located seven billion light-years away, it's the biggest cluster ever found at that distance — and it's resounding proof that dark matter is everywhere in the cosmos.
Dark energy accounts for 70% of everything in the universe, and yet we know almost nothing about it. Now a new model meant to explain some impossibly massive galaxy clusters is here, to make dark energy even more fiendishly complex.
While the faster-than-light neutrinos are grabbing all the physics-shattering attention, there's another strange, unexplained anomaly that might be about to rewrite our understanding of the cosmos. It's all because the universe isn't as monotonous as it should be.
The 2011 Nobel Prizes have been announced, honoring preeminent achievements in the fields of physics, chemistry, medicine, literature, the promotion of peace, and economics. Here's what you need to know about the three science-related Nobel Prizes.