Chandra Sees the Peacock’s Galaxy

To commemorate the 25th anniversary of NASA’s Chandra X-ray Observatory launch, the Chandra team released this never-seen-before image of NGC 6872, a spiral galaxy in the Pavo (Peacock) constellation, on July 22, 2024. This image and 24 others, which all include data from Chandra, demonstrate how X-ray astronomy explores all corners of the universe. NGC […]

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Jul 23, 2024 - 02:00

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In this composite image, a large spiral galaxy has some of its superheated gas stolen by a smaller, nearby neighbor. Centered in the frame, NGC 6872 is a large spiral galaxy with two elongated arms that stretch toward our upper right and lower left. Near the white dot at the heart of the galaxy, a cloud of neon purple tints the arms, which appear steel blue at the tips. The purple represents hot gas detected by Chandra. Just to the upper left of NGC 6872 is a second spiral galaxy. Its spiraling arms are much smaller, but the bright white dot at its core is quite large, suggesting a supermassive black hole. Some of the steel blue matter and gas from NGC 6872’s lower arm appears to be floating toward the smaller galaxy, likely pulled toward the supermassive black hole.

The barred spiral galaxy NGC 6872 is interacting with a smaller galaxy to the upper left. The smaller galaxy has likely stripped gas from NGC 6872 to feed the supermassive black hole in its center.

X-ray: NASA/CXC/SAO; Optical: NASA/ESA/STScI; Image Processing: NASA/CXC/SAO/J. Schmidt, L. Frattare, and J. Major

To commemorate the 25^th anniversary of NASA’s Chandra X-ray Observatory launch, the Chandra team released this never-seen-before image of NGC 6872, a spiral galaxy in the Pavo (Peacock) constellation, on July 22, 2024. This image and 24 others, which all include data from Chandra, demonstrate how X-ray astronomy explores all corners of the universe.

NGC 6872 is 522,000 light-years across, making it more than five times the size of the Milky Way galaxy; in 2013, astronomers from the United States, Chile, and Brazil found it to be the largest-known spiral galaxy, based on archival data from NASA’s Galaxy Evolution Explorer. This record was surpassed by NGC 262, a galaxy that measures 1.3 million light-years in diameter.

See more photos released for this celebration.

Image credit: X-ray: NASA/CXC/SAO; Optical: NASA/ESA/STScI; Image Processing: NASA/CXC/SAO/J. Schmidt, L. Frattare, and J. Major