These images show evidence for the wind blowing away from Sgr A*. The white dot in the center of the image shows Sgr A*. In orange is data from the Atacama Large Millimeter/Submillimeter Array (ALMA) radio telescopes in Chile, mapping the location of cold gas composed of carbon monoxide in the image. In blue is X-ray data from NASA’s Chandra X-ray Observatory. A large cone-shaped cavity, visible as an absence of cold gas in the ALMA data, is filled by hot X-ray-emitting gas in the Chandra data. Researchers think a hot, energetic wind blowing from Sgr A* created this structure by sweeping the cold gas away or heating it up.

A large composite image of the central region of the Milky Way, with X-ray data from NASA’s Chandra X-ray Observatory (red, green, and blue) and radio data from the Atacama Large Millimeter/submillimeter Array (appearing pink, orange, light green, and purple). The X-ray data mainly shows hot gas and the radio data shows cold gas.