关于这张图
This image shows two merging galaxies known as Arp 302, also called VV 340. It is composed of images from three Spitzer Infrared Array Camera (IRAC) channels: IRAC channel 1 in blue, IRAC channel 2 in green and IRAC channel 3 in red. https://photojournal.jpl.nasa.gov/catalog/PIA23008
