But how would a second moon affect the ocean tides? Would months on Earth become longer or shorter? And would these two satellites inevitably collide to cause a...
With so many amazing things happening in the world today, what could possibly go wrong? Well… A giant asteroid is barrelling on a collision course with Earth, and...
Space is full of treasures. Literally. If we were able to extract the resources from the rocks in the asteroid belt alone, we could give $100 billion to every...
Why do solar panels look so different these days? And why have we started installing them on top of mountains, using them to pave our roads, and putting them in the...
Are you looking for a change of scenery? Are you tired of boring old Earth? How would you like a new home away from home? Really far away from home. Like outside our...
Millions of years ago, the megalodon shark was one of the scariest creatures to ever lurk in our seas. And even before that, the mosasaurs reigned supreme, terrorizing...
[dx_custom_adunit mobile_id=”RTK_v1lP”] Twin siblings, twin peaks, twin cities, twin planets… Two earths, one solar system. How would that work? Where...
Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also could have brought alien life to our planet...
Since its discovery in 1610 by Galileo, the rings of Saturn have enchanted us for centuries. Remarkably, we’ve visited Saturn before. Stunning photographs taken...
Today on What If, we’re taking Jupiter’s deadly gases and unleashing them on Earth. Where could you be safe from these toxic winds? How would you breathe...
What if I told you that every time you’re asleep in your bed at night, your private thoughts might be compromised? What if, when you’re dreaming about all your hopes...
Are all of your memories real? Did everything happen the way you remember it? What if somebody filled your brain with memories that aren’t yours? Would you be able...
The time for talk is over. Now the biggest countries on Earth are fighting for global supremacy. What would happen if the United States started World War III? Who would...
Militaries around the world are money-eating machines. And they keep getting more expensive. In 2019, the world spent $1.917 trillion on all the different militaries...
Let’s be honest, we are pushing our planet to a climate change catastrophe. But there could be a solution. 71% of the Earth’s surface is covered with water...
How much water would you need to extinguish the Sun? How would we deliver such an enormous amount of water anyway? Would all that water even make it to the star...
That star at the center of our Solar System, that superhot ball of plasma that gives us heat and energy, and amazing complexions… well, it’s a ticking time...
Imagine a world of endless possibilities. A world where every decision you make splits reality in half. And then the next decision splits it into another half. And then...
Six hundred and thirty-five light years away from Earth, there is a world that seems to promise something almost unimaginable: a planet covered in a vast liquid ocean...
Imagine taking a trip to the outer reaches of our Solar System, to a place few have ever seen up close. Uranus, the icy giant, is a world of extremes, violent, cold, and...
