Answer the door on Halloween and every fifth kid will be dressed as a ninja. There's just something about the legend of the ninja — secretive assassins who move silently in black robes and covered faces, leaping from rooftops and killing with throwing stars (shuriken) — that captures our popular imagination, like pirates or Robin Hood. But just like those other legendary figures, our image of the stealthy Japanese warriors is based largely on nuggets of historical truth buried under mountains of myth. … [Read more...] about Research Center Seeks to Separate Ninja Fact From Fiction
Order 99 star wars
Celestial Navigation for Mariners As Fienberg explains, astronomers aren't the only ones who employ celestial coordinates. "Anyone who navigates by the stars uses them too," he says. "Even though all modern ships and boats have GPS systems onboard, sailors and other mariners are required to learn celestial navigation in case the GPS fails. If you can see Polaris, i.e., the North Star, you'll know which way is north — and, by extension, which ways are south, east, and west too. You'll also know your latitude, as the altitude of Polaris above the horizon is equal to your latitude. And if you have an accurate clock, you can also find your longitude by consulting a table of which stars are due south at the time you're observing." … [Read more...] about How Do We Find Things in the Blackness of Space?