NASAのインスタグラム(nasa) - 10月31日 01時21分

Fifteen Years of Our Chandra X-ray Observatory: This Chandra image of the Hydra A galaxy cluster was taken on Oct. 30, 1999. Hydra A is a galaxy cluster that is 840 million light years from Earth. The cluster gets its name from the strong radio source, Hydra A, that originates in a galaxy near the center of the cluster. Optical observations show a few hundred galaxies in the cluster. Chandra X-ray observations reveal a large cloud of hot gas that extends throughout the cluster. The gas cloud is several million light years across and has a temperature of about 40 million degrees in the outer parts decreasing to about 35 million degrees in the inner region.

Image Credit: NASA/CXC/SAO

#nasa #space #chandra #xray #astronomy #telescope #science

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