All articles tagged with #xray
An international X-ray spacecraft has discovered that the Milky Way's supermassive black hole, Sagittarius A*, experienced powerful flares over the past 1,000 years, revealing a violent history previously unknown, which could reshape our understanding of black hole evolution and their influence on galaxy formation.
In the early 2010s, the TSA introduced Rapiscan X-ray scanners in US airports, which sparked controversy due to their ability to produce detailed, uncensored body images, leading to privacy concerns. These scanners, implemented after a 2009 bombing attempt, were criticized as 'virtual strip searches' and eventually replaced in 2013 with less intrusive millimeter wave scanners that use generic outlines to detect threats. The change was prompted by the scanners' failure to meet privacy standards, highlighting ongoing debates about security and privacy at airports.