Imagine if all the Earth’s oxygen disappeared. Not forever, just for, say, an hour? Could you hold your breath that long? What would happen to the atmosphere? And...
Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did every planet suddenly get a twin? Where would...
Returning for a second term in office, President Trump promised to crack down on illegal immigration using ICE – the U.S. Immigration and Customs Enforcement...
What if, someday, we decided that the usefulness of our planet had run its course, and humans needed to scour space to find somewhere new to live? But instead of...
In 2020, when Kim Jong-Un disappeared for three weeks, the world went into full speculation mode. Was he ill? Dead? On a secret mission to binge-watch K-dramas? South...
For over half a century, we’ve searched for radio signals from extraterrestrial civilizations. But it’s, been, well, a little quiet. Are they ignoring us? Or...
Something is very wrong with our Sun. It’s turned into a spinning lighthouse of death. What would make the Sun so much more deadly than usual? Would there be any way...
Just north of the Martian equator lies a 45 km (28 mi) wide impact crater that scientists believe may have been the site of an ancient lake. Here at Jezero Crater...
Get your bone flute and gather around the fire. Today on What If, we’re taking you back to the time of woolly mammoths and saber-toothed cats. That’s right...
Have you ever felt a surge of adrenaline when you stomped on a bug? Well, imagine how this guy is about to feel. Call the army, heck, call your mom, because the end is...
[dx_custom_adunit mobile_id=”RTK_v1lP”] There are certain days in your life that stand out more than others. You can recall them, as if they happened...
Could Thor actually punch the Hulk without knocking himself over?
Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our Solar System. And not once has a single black...
As our biggest planet, Jupiter’s immense presence helps to hold our solar system together. Its massive size and gravitational pull give it a dense atmosphere, a...
Would you spend a night at the top of the first tower to space? At 100 km above sea level, it would be the highest structure that humans have ever built. This tower...
People are fighting over it in grocery stores all around North America. Some are selling it to make an immense profit. No, this isn’t the scene of some crazy...
Birthday balloons falling limply to the ground. Satellites, medical scanners and TVs fading to black. And twinkling stars in the night sky disappearing one by one. All...
Today, people with Down syndrome are generally treated with love and respect from those around them. And despite having an intellectual disability, people with Down...
Legend has it that somewhere beyond Neptune and Pluto, there is a ninth planet, with a mass that is five times greater than Earth’s. Planet Nine, also known by its...
The Big Rip, the ultimate fate of our Universe. It will be a cosmic event that will tear apart galaxies, one by one. Stars, planets, you, everything will be eviscerated...
