NASAのインスタグラム(nasa) - 2月5日 04時46分

Spirals! The Triangulum Galaxy, seen here, is a spiral galaxy about 3 million light years from Earth belonging to the group of galaxies that includes the Milky Way and Andromeda galaxies.
Chandra X-Ray Observatory's (@NASAChandraXRay) data in pink reveals a diverse range of objects including neutron stars and black holes that are pulling material from a companion star, and supernova remnants. An optical image from amateur astronomer Warren Keller in red, green, and blue shows the majestic arms of this spiral galaxy that in many ways is a cousin to our own Milky Way.

Credit: X-ray: NASA/CXC/SAO; Optical: Warren Keller, Mayhill, NM
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