NASAの論文(stars and galaxies in the Ursa Major constellation)

The Triangulum galaxy, or M33, is shown here in far-infrared and radio wavelengths of light. Some of the hydrogen gas (red) that traces the edge of the Triangulum’s disc was pulled in from intergalactic space, and some was torn away from galaxies that merged with Triangulum far in the past.
Credit: ESA/NASA/JPL-Caltech/GBT/VLA/IRAM/C. Clark (STScI)「私たちは、ジェイムズ・ウェッブ宇宙望遠鏡が太陽からの紫外線や荷電粒子、銀河系からの宇宙線、太陽系内の微小隕石との衝突といった宇宙環境を乗り切らなければならないと常に知っていました」と述べ、数年以上にわたるミッションを遂行できるように宇宙望遠鏡は性能に余裕を持って作られていると主張しました。


The right panel is an image from NASA's Spitzer Space Telescope of stars and galaxies in the Ursa Major constellation. The left panel is the same image after stars, galaxies and other sources were masked out.+ Full image and caption
Credit: NASA/JPL-Caltech/GSFC

The Large Magellanic Cloud (LMC) is a satellite of the Milky Way, containing about 30 billion stars. Seen here in a far-infrared and radio view, the LMC’s cool and warm dust are shown in green and blue, respectively, with hydrogen gas in red.
Credit: ESA/NASA/JPL-Caltech/CSIRO/C. Clark (STScI)

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