There’s a massive black hole next door that appears far too big for its host galaxy! And in another galaxy, TWO supermassive black holes formed, giving us a glimpse at a true rarity in astronomy!

Come with us to Italy to find out what went into measuring the FTL neutrinos.

Now that we’ve finished our tour of the planets, we’re headed back to the asteroid belt. Asteroids are chunks of rock, metal, or both that were once part of smallish planets but were destroyed after collisions. Most orbit the Sun between...

In this video Paul Andersen explains how the linear momentum is equal to the product of the mass of an object and the velocity of the center of mass. He uses video analysis software to calculate the velocity of an object and therefore...

How do you know when you've "discovered" a particle? What do we mean by "discovery"?

Wheezy Waiter announces the SciShow nominees for "Worst Science in a Film," & Hank talks about the bird flu and shares two sounds that had never been heard by human ears until very recently.

This week on SciShow Space News, Cassini visited Saturn's moon Dione for the last time, and two little shepherd moons may have helped form some of Saturn's rings.

Hank tells us about NASA's Near-Earth Object Program, which tracks the paths of asteroids and categorizes them according to the likelihood that they will strike the Earth at some point in the future.

COLLISIONS! A big part of physics is understanding collisions and how they're not all the same. Mass, momentum, and many other things dictate how collisions can be unique. In this episode of Crash Course Physics, Shini sits down to lead...

From asteroids capable of destroying entire species to supernovae that could exterminate life on Earth, outer space has no shortage of forces that could wreak havoc on our planet. But there's something in space that is even more...

Eighty-five percent of the matter in our universe is dark matter. We don't know what dark matter is made of, and we've yet to directly observe it, but scientists theorize that we may actually be able to create it in the Large Hadron...

The results are in from the neutron star collision this past August! Astronomers are revealing what they've learned so far, with more pure gold research underway!

In this video Paul Andersen explains that elementary reactions are steps within a larger reaction mechanism. Colliding molecules require sufficient energy and proper orientation to break bonds and form new bonds. A unimolecular...

The Andromeda galaxy is heading straight toward our own Milky Way. The two galaxies will inevitably collide. Will that be the very last night sky our solar system witnesses?

Because of space physics, one faraway asteroid is likely the progenitor of almost a third of all the meteorites on Earth.

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In this video Paul Andersen compares and contrasts elastic and inelastic collisions. In all collisions the linear momentum will be conserved. In an elastic collision the kinetic energy of the objects will also be maintained. Several...

Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation.

The complex systems of high school dating and chemical reactions may have more in common than you think. Explore five rules for speeding up chemical reactions in the lab that might just land you a date to a dance!

Today Hank brings us the news of a unique astronomical discovery - a rogue planet. He also allays our fears of an apocalyptic collision with Earth. So, this new planet is awesome, but it needs a different name - CFBDSIR...

What wiped out the dinosaurs? Most of us were taught it was a killer asteroid—which is true. But it turns out there was more than one disaster movie playing at the cineplex that was Earth 66 million years ago.

Today we start a three episode arc on the rise of a global telecommunications network that changed the world forever. We’re going to begin with computer networks, and how they grew from small groups of connected computers on LAN networks...

So, why doesn't the moon just crash into the Earth? And why doesn't the Earth crash into the Sun? What are orbits exactly and why do they happen? Well, it has to do with gravity and velocity. In this episode of Crash Course Kids, Sabrina...

Scientists have observed a collision of two of the universe's most extreme objects. And a mission to Jupiter's moon Europa makes an important step forward.

In this video, learn the key differences between switches and hubs, and their roles in networking.