"The fascinating part about this is that the same mechanism that breaks up airplane wakes could be in play here." When you purchase through links on our site, we may earn an affiliate commission. Here ...

Around July 4, 1054, Chinese astronomers recorded a “guest star” that shone so brightly, it was visible in broad daylight for 23 days. The remnants of that long-ago supernova now form the Crab Nebula, ...

Third time's a charm. Elon Musk's Mars rocket prototype just made its first landing -- but shortly after it went boom. Eric Mack has been a CNET contributor since 2011. Eric and his family live 100% ...