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/ 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 […]
Get a free What If Top 10 book when you sign up for our newsletter: https://underknown.com/newsletter/ You’ve traveled thousands of light-years through interstellar star systems. And now you’re stranded on a planet you know nothing about. As long as you’ve got oxygen, water and food aboard your spaceship, you should […]
Get a free What If Top 10 book when you sign up for our newsletter: https://underknown.com/newsletter/ Dark, mysterious and consuming everything around them, black holes will rip apart anything that passes their event horizons. But could there be more? What would happen if you fell into one of those monstrosities? […]
Get a free What If Top 10 book when you sign up for our newsletter: https://underknown.com/newsletter/ Get ready for some serious burns and the instantaneous death of organisms. Let’s turn up the heat and bring the entire planet to a boil for five whole seconds. How would this apocalyptic heat […]
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 […]
Go to https://www.blinkist.com/whatif to receive free unlimited access for 1 week and 25% off a premium membership to this video’s sponsor, Blinkist. This is our Universe, an ever-expanding network of stars and galaxies. And this is your brain. Don’t they look eerily similar to one another? Why are they so […]
Thousands of light-years from Earth, there could be another planet hospitable to life. Kepler 69c. And you’re about to travel to this alien world to see that life with your own eyes. What would it be like to make this epic journey so far across the Universe? What kind of […]
DISCO BALL MOON INFORMATION: The large mirror-tiles are 150km squared, and the small ones are 100km squared. They are all 10 km thick with glass (with an IOR of 1.56) There are 3012 mirrored tiles When as near as the ISS, the Earth surface to disco-ball-moon surface distance is 420 […]
