Sponsored Products are advertisements for products sold by merchants on When you click on a Sponsored Product ad, you will be taken to an Amazon detail page where you can learn more about the product and purchase it.Nearby is their daughter Andromeda, chained to a rock and seemingly doomed.But Perseus, the hero of this saga, swoops in to save her.The larger, fainter B star swings in front of and then behind the primary in the sequence. CHARA During eclipse, Algol fades from magnitude 2.1 (as bright as one of the Big Dipper stars) to 3.4, then returns to its original brightness.
This is a collection of unrelated short videos in the field of physics. And if that doesn't whet your appetite, ask yourself how we can get energy both from splitting atoms and from joining them together!What if I told you that you could stand in your front yard and watch one star eclipse another 93 light-years away from Earth with nothing but your eyeballs?As improbable as it sounds, this sight is within easy reach of northern hemisphere skywatchers once or twice a month throughout fall and winter.Here, you can learn about the key properties of atoms, including what particles they contain, how they are organized, and how they form chemical bonds with one another. Plus, brush up on the acid-base chemistry that takes place in water (and learn how it works in your own bloodstream)!Did you know that your body is approximately 18% carbon?Algol, nicknamed the Demon Star, resides in the constellation Perseus directly below the "W" of Cassiopeia.