Two more little Earth-sized planets have been discovered orbiting a distant star, astronomers said Wednesday, and their bizarre baked death may foreshadow the destiny of our own solar system. The publication comes a day after the announcement of the first Earth-sized planets ever confirmed outside our solar system. Already firmly in the exoplanet age, we’re apparently entering an era of exo-Earths, full of small worlds with a past and a future very much like our own.
The sun makes an excellent coffee roaster, it turns out
By Andrew Rosenblum
Posted 04.27.2011 at 10:11 am 0 Comments
In 2004, artist Dave Hartkop was looking for a way to move out of his parents’ house. Pairing his interest in alternative energy with his brother Mike’s passion for coffee, he decided to start an online coffee business, and designed a huge solar-powered roasting system to supply it. Now the brothers are on their fourth, and by far largest, version of the roaster. Dubbed Helios 4, it’s made up of more than 600 mirrors and has a 35-foot-by-35-foot footprint.
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.