Category - Cosmos

What If Aliens Arrived Tomorrow?

Are we alone in the Universe? With more than 100 billion galaxies in the observable universe and at least 500 billion planets in the Milky Way alone, don’t you...

What If the Sun Swallowed Earth?

The Sun’s core is shrinking. But as its core shrinks, the Sun itself grows larger. And it will continue to grow, until one day, it engulfs the Earth. How long can you...

What If You Skydived From the ISS?

410 kilometers (254 miles) above the Earth. That’s where the International Space Station floats. What if you happened to be all the way up here but suddenly fell...