What If Uranus Collided With Earth?

It’s been 30 days since Uranus first appeared in the sky. At first, it looked like our Moon had found itself a stellar partner. But then, we understood something...

What If Every Planet Had a Twin?

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...

What If We Had Flying Cars?

Imagine an entire network of flying cars zooming around 2,000 meters (6,561 feet) above our congested city streets. Your morning commute would be a lot different up...