By Michael MoyerPosted 07.17.2007 at 12:43 pm3 Comments
Back in July of 2003 we published "The Flight of the Bird Men," a story with the tag line "For Jari Kuosma and Robert Pecnik, skydiving wasn't enough—they wanted to strap on wings and fly. So what if 96 percent of their predecessors had died in the attempt?" After seeing this video, I can't believe it's only 96 percent:
Rockets burn for mere minutes. This engine runs for years, sending probes to Neptune at 10,000 miles an hour
By Michael Moyer
Posted 03.15.2006 at 3:00 am 1 Comment
NASA's Ion Engine
1. Charge the Fuel
Xenon is an inert gas, seemingly useless for rocketry. Before it´s used as fuel, the engine must convert it into an electrically charged gas, also called a plasma. An electron emitter fires electrons at the xenon gas. When an electron hits a xenon atom, it strips off an additional electron from the atom´s shell to create a positively charged xenon ion.
Techcrunch is a blog solely dedicated to tracking new Web 2.0 applications. How embarrassing that my co-worker from the science silo (fellow poster Michael Moyer) had to bring it to my attention, but man am I glad he did. Techcrunch blogger Michael Arrington doesn't just list the latest Web apps, he provides thorough and smart reviews, often long before the apps get mainstream buzz and show up on one of our other favorite sites, Lifehacker. Check out Arrington's review of the not-yet-public airline price tracker, Flyspy—I'm drooling already.—Mike Haney
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.