quarta-feira, 12 de julho de 2017

Astronomy picture of the day - 2017 July 12 - Messier 63: The Sunflower Galaxy

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Messier 63: The Sunflower Galaxy 
Image Credit & CopyrightData - Hubble Legacy ArchiveSubaru Telescope (NAOJ), Don Goldman
Processing - Robert GendlerRoberto ColombariDon Goldman

Explanation: A bright spiral galaxy of the northern sky, Messier 63 is about 25 million light-years distant in the loyal constellation Canes Venatici. Also cataloged as NGC 5055, the majestic island universe is nearly 100,000 light-years across. That's about the size of our own Milky Way Galaxy. Known by the popular moniker, The Sunflower Galaxy, M63 sports a bright yellowish core in this sharp composite image from space- and ground-based telescopes. Its sweeping blue spiral arms are streaked with cosmic dust lanes and dotted with pink star forming regions. A dominant member of a known galaxy group, M63 has faint, extended features that are likely star streams from tidally disruptedsatellite galaxies. M63 shines across the electromagnetic spectrum and is thought to have undergone bursts of intense star formation.