Humanity’s nuclear arsenal is capable of destroying all life on Earth. Over. And over. And over. Maybe it’s time we dumped it far away. We might want to inhabit other planets in the future, so how about our closest star? How many nukes could we throw at the Sun? What […]
Get 20% off Grammarly Premium by signing up at https://grammarly.com/WHATIF 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 like if Earth’s magnetic field was as huge as Jupiter’s? How much stronger […]
Thanks to Established Titles for sponsoring this video! Get 10% off on any purchase with code WhatIf. Go to https://establishedtitles.com/WhatIf and help support the channel! Some of the planets in our Solar System are gigantic. But what if they got even bigger? Let’s go up the planetary size chart and […]
There are places in the Universe where you could turn to ash, freeze to death or be completely crushed by gravity. And you’re about to visit them all. What conditions make some of these exoplanets so dangerous? What would happen if you set foot on them? And which planet would […]
Download the Speakly app at https://speakly.app.link/Speakly and get a 60% discount if you join the annual subscription. Something is very wrong with our Sun. It’s turned into a spinning lighthouse of death. What would make the Sun so much more deadly than usual? Would there be any way life on […]
Get a free What If Top 10 book when you sign up for our newsletter: https://underknown.com/newsletter/ Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary neighborhood. Where would this planet need to orbit within the Sun’s habitable zone? How […]
Get a free What If Top 10 book when you sign up for our newsletter: https://underknown.com/newsletter/ The biggest planet in the Solar System has gone rogue. And now it’s heading straight toward Earth. You have 30 days till this gas giant wipes us all out. What speeds would Jupiter be […]
It’s a small world after all, because today, we’re shrinking Earth to the size of Pluto. But if our planet was this tiny, how would it alter the atmosphere? Why would the Earth get hotter? And how would gravity affect our water supply? Would we be tidally locked to the […]
Out of all the planets in the Universe, Earth is clearly the best for life, right? Wrong. Earth may be great, but scientists have discovered a few worlds that could be even better for life. Behold, KOI 5715.01. Most of the contenders on our superhabitable planet list aren’t the ones […]
You can find our beautiful education posters, useful notebooks and cozy sweaters in our shop now: https://kgs.link/shop-126 Sources & further reading: https://sites.google.com/view/sourceskardashevscale/ The observable universe is a big place that has been around for more than 13 billion years. Up to two trillion galaxies made up of something like 20,000 […]
