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 Royal Observatory of Greenwich, England, has crafted three simple animations to explain three very complex things: What's inside a black hole, how do we know the age of the sun—did you know the Sun weighs 4,000 trillion trillion hippopotamuses?—and how big is the Universe.
Nothing lives forever, not even our universe. Eventually it'll go kaput and be destroyed... but how? Smart people have wrapped their heads around the universe's destruction and have come upwith three different theories. The Big Rip, Heat Death (or the Big Freeze) and the Big Crunch and Big Bounce. They all sound like…
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.
Sat on top of a mountain in Chile is the world's most powerful digital camera. Known as the Dark Energy Camera, it's recently been fired up to image the night sky, in an attempt to find the exotic stuff that gets all physicists excited. These are the first images it's produced. And they're magnificent.