The Solar System seems calm, but that tranquility is more fragile than it appears. Now imagine one day looking up and noticing something unfamiliar in the sky. A tiny...
Space tourism is much closer than you may think. The International Space Station will soon retire from its successful run through low Earth orbit. But humanity’s...
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...
Overnight, our planet has gone from a pale blue dot to a glistening white snowglobe. Stretches of Earth have become frozen wastelands that are completely inhospitable...
This is not some harmless hair. It’s volcanic glass and it could turn your life into an itchy, blistering existence. Uh oh. Looks like today’s forecast is volcanic...
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...
Absolute zero is the lowest possible temperature in the Universe. Nothing gets colder than that. So if the entire Earth suddenly cooled down to the most frigid...
Every time you watch a thunderstorm outside your window, you’re witnessing the energy of an atomic bomb. Now imagine harvesting that raw energy and using it to...
Since 1988, 71% of all the world’s carbon emissions have been produced by just 100 companies. Their operations are largely to blame for the climate crisis we now...
The Sun isn’t the biggest thing in our Solar System. And it’s not Jupiter, either. But close. It’s Jupiter’s very own magnetic field. What would it be...
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 all the coral reefs died out? What if we lost all of our coral reefs overnight? Ocean diving would become less impressive, that's for sure. But what about the...
About 50,000 years ago, we shared this planet with different hominids called the Neanderthals. Their species wasn’t human, but they weren’t far from it...
Deep under Europa’s thick icy surface lies an ocean larger than all of Earth’s oceans combined. But it’s pretty useless way out there. Let’s ship that water back to...
Imagine if one day you looked up into the night sky, and saw Mars or Saturn where the Moon was supposed to be. That would sure turn our Earth into an alien world. And...
What would happen if you took the most energetic light source in the Universe and smashed it into a massive gravitational monster? Well, you might reverse the flow of...
Eleven times wider than Earth. Over 300 times more massive. And a million times more terrifying. Jupiter may look like a beautiful ball of swirling clouds, but on the...
Human history has been full of battles and wars, some big and some small. But if World War 3 were to happen, it might be humanity’s biggest battle yet. Advanced...
Welcome to Earth City. Yeah, you heard that right. You’re not going on a globetrotting tour to see all the planet’s major cities. You’re already there. Today, the entire...
What does wealth look like to you? Is it a hundred dollars? A thousand dollars? A million dollars? We can always go higher. But how much is too much? In...
