How big is the Sun compared to the Earth? Imagine you were able to shrink the Sun to the size of a basketball. At that point, the Earth would be reduced to the...
Venus sits just one step closer to the Sun than Earth, making it our nearest planetary neighbor. At certain points in its orbit, it comes within roughly 40 million...
A peaceful walk through the forest can turn into a dangerous encounter in seconds. You are hiking with your dog when suddenly it stops, starts barking, and focuses on...
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...
Washington, D.C. is more than just the capital of the United States. It is the center of American political power, home to the White House, Congress, the Supreme Court...
The two biggest planets in our Solar System in one telescope view. And catastrophe is imminent. If Jupiter and Saturn suddenly were on a collision course, which of the...
We’ve talked about settling on the Moon, Mars and even Venus. But how about somewhere that’s cold, dark and smells like farts? Uranus. What would conditions be like on...
13.8 billion years ago, the entire Universe emerged from one single point in space. This theory is known as the Big Bang. And it’s the most widely accepted story of the...
Death and the possibility of an afterlife have fascinated artists, philosophers, and scientists throughout history. Fear, hope, dread… these are all things we...
The icy moon of Jupiter. A world so frigid that its surface temperatures would instantly turn you into an astronaut popsicle. Its atmosphere is almost non existent, and...
Millions of years ago, all the continents were one. Waiting to crack and spread into the world we know today. Thing is, Earth’s ground is constantly moving. So how about...
Scroll down to watch the video. It’s the largest star that we’ve ever discovered: UY Scuti. And if it were to replace our Sun, it would change a lot more...
[dx_custom_adunit mobile_id=”RTK_v1lP”] What if Jupiter gained just a little bit more mass during its formation period, and then ignited to become a star...
Welcome to one of the most restrictive countries in the world. Ruled by an enigmatic, tyrannical and violent leader, North Korean citizens and tourists can be threatened...
As thrill-seekers, we like to do a lot of extreme, gravity-defying stunts to push our limits. If base jumping or caving is your thing, how about taking a tumble all the...
For decades, computers have become faster, smaller, and more powerful. But even the world’s best supercomputers have limits. Some calculations would take them...
For decades, engineers have been working to make robots more like humans. Artificial intelligence has allowed machines to think more intelligently, while advanced...
While we don’t want to alarm you, most accidental deaths can occur right in your home. Poisoning, falls, choking, drowning, fires and burns top the list of the most...
Deep beneath the Earth’s surface, there’s a scorching ball of iron surrounded by an ocean of boiling hot liquid metal – the Earth’s core...
It’s about to get really hot down on Earth. Because all our oceans suddenly started to boil, sending steam into the atmosphere at an alarming rate. Why would all...
