This Insane Homemade Lightsaber Burns Straight Through Things
OK, so this should be labelled with extreme hazard warnings or something. A crazy laser enthusiast actually built his own lightsaber capable of burning straight through things. The monster 3W laser, made from a diode taken out of a DLP projector bolted to two high-power lithium ion laptop batteries, is capable of burning straight through…
The Hunt for Alien Megastructures
When most people think about searching for extraterrestrial intelligences, they imagine someone like Ellie Arroway searching the skies for radio transmissions. But what about looking in other ways? Perhaps a highly advanced alien civilisation might build structures large enough for us to see. Top image: A depiction of Larry Niven’s Ringworld. Credit: Hill/Wikimedia Commons Vast…
