Mars is usually a safe 225 million kilometers away from Earth, but what if the red planet went off course and headed straight toward us? This nightmare scenario would...
It’s invisible, deadly and sucking up every bit of matter in its path. The most massive black hole in the known Universe is headed right toward Earth. What would you see...
In 1044, the Chinese invented gunpowder. And we’ve been getting into trouble ever since. Fireworks are cool, nuclear warfare is not. And nuking the moon...
A rogue star is headed straight for our Sun. If these two stars slam into each other, it could spell the end of all life on our planet. How could a rogue star end up in...
NASA has accomplished some of humanity’s greatest achievements. It put astronauts on the Moon, explored every planet in our Solar System, launched revolutionary...
As our population grows, we’re going to need a lot more farms to feed the planet. Yet, in a lot of places, farming is almost impossible. And much of the land we...
Imagine if all the Earth’s oxygen disappeared. Not forever, just for, say, an hour? Could you hold your breath that long? What would happen to the atmosphere? And...
This rogue star has been traveling the Universe. And now, it’s finally entering our Solar System. But this isn’t just any regular star. It’s known as a...
There are over one million volcanoes on our ocean floor. And all of them suddenly started spewing out red-hot molten rock. The ocean is filling with lava. And nothing...
As our biggest planet, Jupiter’s immense presence helps to hold our solar system together. Its massive size and gravitational pull give it a dense atmosphere, a...
The monkeys have revolted. And not just with brute strength or violence. Primates have finally outsmarted humankind once and for all. It’s their planet now. How...
If the Earth had an edge, it might look something like this, the edge of a flat Earth. A vast frozen wall at the horizon, trees growing at strange angles, and a sky that...
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...
Children of the night, what music they make. That’s right, we’re talking about the nocturnal flying mammals, bats. Besides being a source of Halloween inspiration, the...
Earth has gone through at least five major ice ages in its history. And you better start adapting now. Because another ice age is about to begin. Hypothetically. How...
Imagine Earth covered in thick sheets of ice. And sea levels so low you could walk to a different continent. This is what our planet would look like during an ice age...
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...
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...
[dx_custom_adunit mobile_id=”RTK_v1lP”] 55% of the world’s population live in cities. By 2050, that’ll be two thirds of the world’s...
An invasion of the United States by China sounds like the plot of a blockbuster movie. The United States has not experienced a foreign invasion of its mainland in modern...
