Tag «gravity»

Where does gold come from? – David Lunney

Where does gold come from? – David Lunney

In medieval times, alchemists tried to achieve the seemingly impossible. They wanted to transform lowly lead into gleaming gold. History portrays these people as aged eccentrics, but if only they’d known that their dreams were actually achievable. Indeed, today we can manufacture gold on Earth thanks to modern inventions that those medieval alchemists missed by …

The Formation of the Solar System in 4K (Ultra HD)

The Formation of the Solar System in 4K (Ultra HD)

Bryce: This is the story of our Earth’s formation four-and-a-half billion years ago, and of a little asteroid called Bennu, who’s also survived until now. We have the team at NASA to thank for bringing us this video. NASA narrator: The Milky Way, home to billions of stars, rising and setting over billions of worlds, …

The True Science of Parallel Universes

The True Science of Parallel Universes

Everyone loves the idea of parallel universes – maybe it’s the appeal of an ideal world where you have second chances and things turn out differently – an alternate reality where you do get into Hogwarts and the Star Wars prequels aren’t made and you finally plug in your asymmetric computer cord correctly on the …