What Happened to the $100 Million Dream to Send Sub-Gram-Sized Cameras to Alpha Centauri

Scientific and technological ideas can sound outlandish until they suddenly aren't. Many things people take for granted today were once considered impossible. However, nearly a decade after being revealed, the $100 million Breakthrough Starshot interstellar space project still seems more like a pipe dream than anything else. [Read More] petapixel.com »