Image credit: X-ray: NASA/CXC/University of Michigan/J-T Li et al.; Optical: NASA/STScI
Info: https://chandra.harvard.edu/photo/2019/ngc3079/
"The galaxy NGC 3079, located about 67 million light years from Earth, contains two "superbubbles" unlike anything here on our planet. A pair of balloon-like regions stretch out on opposite sides of the center of the galaxy: one is 4,900 light years across and the other is only slightly smaller, with a diameter of about 3,600 light years. For context, one light year is about 6 trillion miles, or 9 trillion kilometers."
