What If Earth Orbited UY Scuti?

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...

What If You Met a Time Traveler?

If time travel is possible, why haven’t we met a single time traveler yet? And if we did meet one, how would we know they weren’t faking it? What would their...

What If COVID-19 Never Disappears?

How would you feel if this never ended? Despite all of the masks, tests, and vaccinations, there is no guarantee that COVID-19 will ever disappear. But stick with me on...

What If You Cut the Moon in Half?

What causes moonquakes? What would happen if half of our Moon drifted away? Has the Moon already split in half? As friendly neighbors in the sky, the Moon and Earth have...

What If the Universe Is a Loop?

If you got into a spaceship, and traveled long enough and fast enough, could you eventually loop back to where you started? Assuming you don’t accidentally collide...