An interstellar comet can glow in X-rays even while remaining hundreds of millions of kilometers away. That is what makes 3I/ATLAS unusually valuable to astronomers. The object, only the third known ...

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 ...

The first X-ray portrait of comet 3I/ATLAS has turned a rare interstellar visitor into a powerful new probe of the space between the stars. By catching the comet in high-energy light, ESA’s XMM-Newton ...

Two X-ray space telescopes capture the comet's high-energy glow, revealing hidden gases and solar wind interactions. When you purchase through links on our site, we may earn an affiliate commission.