NASAのインスタグラム(nasa) - 5月11日 02時36分

Happy Mother's Day! Send your mom this interstellar 'rose, seen here by our Spitzer Space Telescope. These bright young stars are found in a rosebud-shaped (and rose-colored) nebulosity known as NGC 7129. The star cluster and its associated nebula are located at a distance of 3300 light-years in the constellation Cepheus.

The stars formed from a massive cloud of gas and dust that contains enough raw materials to create a thousand Sun-like stars. In a process that astronomers still poorly understand, fragments of this molecular cloud became so cold and dense that they collapsed into stars. Most stars in our Milky Way galaxy are thought to form in such clusters.

Image Credit: NASA/JPL/Caltech/Harvard-Smithsonian CfA

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