NASAさんのインスタグラム写真 - (NASAInstagram)「Gazing into the blue, blue eyes of the universe. ⁣ ⁣ Humanity has "eyes" that can detect all different types of light through telescopes around the globe and a fleet of observatories in space. From radio waves to gamma rays, this "multiwavelength" approach to astronomy is crucial to getting a complete understanding of objects in space.⁣ ⁣ This is galaxy cluster Abell 2744. Galaxy clusters are the largest objects in the universe held together by gravity, temperatures of tens of millions of degrees, which glow brightly in X-rays, and can be observed across millions of light years between the galaxies. This image combines X-rays from the Chandra X-Ray Observatory (diffuse blue emission) with optical light data from the Hubble Space Telescope (red, green, and blue).⁣ ⁣ Image Credit: NASA/CXC; Optical: NASA/STSci⁣ ⁣ #NASA #Eyes #Light #Gravity #Galaxyclusters #Space #Universe」9月24日 23時56分