A rare interstellar comet has been caught in X-rays by two space telescopes, revealing how its gases interact with charged ...
The third known interstellar comet to visit our solar system has just done something no one had seen before: it lit up in ...
Recently, astronomers announced the results of a study using data collected with NASA’s Chandra X-ray Observatory of two comets — C/2012 S1 (also known as “Comet ISON”) and C/2011 S4 (“Comet PanSTARRS ...