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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A composite image shows a field of stars on a dark background, together X-rays in blue and radio in red

Possible Supernova Remnant in Galactic Center

Explanation: Do you see that blue blob to the lower right of the image center? Astronomers think that it shows where a massive star exploded as a supernova whose light reached Earth 1,700 years ago . The image combines optical data from the PanSTARRS telescopes in Hawaii (background stars in red, green, and blue), radio from the MeerKAT telescope in South Africa (large red cloud) and X-rays from NASA 's Chandra X-ray Observatory and ESA ’s XMM-Newton (shown in blue). The large cloud is a star forming region called Sagittarius C , which is approximately 50 light-years in extent and about 26,000 light-years from Earth . It is located only about 260 light-years from the supermassive black hole in the center of the Galaxy (off to the left of the image). If the blue blob is confirmed to be a supernova remnant , it would be one of the closest ever discovered to the Galactic Center . In this dense region , the deaths of massive stars are connected to the birth of new stars through gas and magnetic fields in a complex way.

Date June 18, 2026
Credit Image Credit & Copyright: X-ray: NASA / CXC / UCLA / Z. Zhu et al.; ESA / XMM-Newton ; Optical: PanSTARRS ; Radio: MeerKAT ; Image Processing: NASA / CXC / SAO / L. Frattare and P. Edmonds
Text: Cecilia Chirenti ( NASA GSFC , UMCP , CRESST II )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.