NRAO BLOGS
This composite image shows evidence for a wind blowing away from Sagittarius A* (Sgr A*), the supermassive black hole in the center of our galaxy. 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.
NSF NRAO at the International Science and Engineering Fair
Paul Vosteen |
8 June 2026

Meeting the next generation of young scientists and engineers The U.S. National Science Foundation (NSF) National Radio Astronomy Observatory…
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Astronomers Detect Whirlpool Movement in Early Galaxies

Astronomers Detect Whirlpool Movement in Early Galaxies

 ALMA images of rotating galaxies in the early universe shown on a background from the Hubble Space Telescope.
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