Tag «astrophysics»

The Old Sailors’ Tool That Saved Apollo 13

[INTRO ♫] Apollo 13 went down in history—and not because it went great. Well, the movie was very successful, but the mission not so much. The spacecraft had two liquid oxygen tanks that were supposed to provide air for the astronauts and power the spacecraft on the way to the Moon. And then one of …

The Brightest, Biggest Space News of 2019!

The Brightest, Biggest Space News of 2019!

[♪ INTRO] 2019 is almost over, and it has been another really good year for exploring the universe. I mean we took the first ever picture of a black hole, landed our first robot on the far side of the Moon, and explored our farthest-yet object in the solar system. But some discoveries were even …

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 …