You can thank dark matter! As the universe expanded, dark matter became a web that stretched across space. It pulled in normal matter to create galaxies.

Scientists have been searching for dark matter particles for years, yet we still have no idea what they look like. One theory suggests we can’t find it because there are many different dark matter particles.

We can’t see it, but the universe appears to be full of this invisible mass.

Space smells like gunpowder and steak.

Blueberries found on Mars prove that there has to be flowing water, iron, and wind that can strip away fossil sand dunes.

This impact would make the one that killed the dinosaurs look like a pebble. It may have been the size of Pluto.

Scientists are split on where we should search for life. Sand dunes? Lava tubes?

Who doesn’t want to go to the red planet?

There is a giant area that is colder and emptier than it should be. How did it get there? We have to look back to the Big Bang.

It’s beautiful, but catastrophic. Even the smallest bits of matter travel at 400,000 miles per hour after the collision.

There’s a level of danger out in space that’s beyond even our own imaginations. We asked our How the Universe Works experts to describe the most mind boggling way the universe could kill us.

A neutron star is one of the most dangerous objects in the universe. Neutron stars are the densest things besides black holes. A stone sized piece of this star would weigh 100 million metric tons.

Take it from us, you don't want to smell like a comet.

Think of it like a cosmic ray gun. The energy released from a gamma ray burst is equivalent to a hundred trillion nuclear weapons going off every second for a hundred billion years. They can reduce planets to vapor.

Stars go out with a bang. It’s an incredible light show.

We’re not joking. It’s actually a thing. These stars rise from the dead and take revenge on the vampire stars that sucked the life out of them.

Life is impossible on Venus, but can the brutal winds that sweep across the planet create the right conditions for life just above the surface?

The Planck telescope peers through space and time towards the beginning of everything to capture an image of our universe from more than 13 billion years ago, 380,000 years after the Big Bang.

Planet Nine sits on the dark, distant edge of our solar system. Until we see the planet with our own eyes, we won’t know much about it’s surface. One theory is that Planet 9 is rocky like Earth, but 10 times as massive.

Will gravity or expansion win? There are three endgames: the universe will continue expanding forever, gravity and expansion will find balance, or gravity wins and the universe begins to get smaller.

The heaviest metals in the universe can’t be created by nuclear fusion alone. Dense neutrino stars collide to create a burst of energy cataclysmic enough to bind the proton heavy stars into the heaviest elements like gold and lead.

Jupiter's weather doesn't come from the sun; it comes from deep within the planet itself. Jupiter also spins faster than any other planet in our solar system.

How can we peer back into the Big Bang? It may be as easy as turning on your television.

On December 7, 1995, NASA's Galileo spacecraft dropped a probe into Jupiter's atmosphere.

As infant planets, Earth and Venus were twins but today they couldn’t be more different. Two events caused a radical divergence in their development.

New evidence suggests that there’s a ninth planet in our solar system. Sorry, Pluto, we’re not talking about you. The only thing is... we’ve yet to actually see this planet.

Everything we know and see started with the Big Bang but physics has yet to figure out exactly how it happened.

There’s a level of danger out in space that’s beyond even our own imaginations. We asked our How the Universe Works experts to describe the most mind boggling way the universe could kill us.

Venus had water once, but it became desiccated with no protection from the sun. It’s a glimpse of Earth’s future as the sun keeps getting larger, eventually causing a cataclysmic greenhouse event.

In 2005, NASA's Cassini spacecraft captured an astounding sight: geysers of icy water spewing from Enceladus, one of Saturn's moons.

The core of Saturn is a scalding 21,000 degrees, twice the temperature of the sun's surface.

The oort cloud comets are dinosaur bones of solar system formation. Contained in them are the ingredients that made up our planets.