September 20, 2018
You share your birthday with the light of distant galaxies that has been traveling for millions of years just to arrive here, now, alongside...
Stars and Dust in Corona Australis
Birthday · September 20, 2018
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APOD published September 20, 2018. Credit: Josep Drudis. A publication-date match, not a photo taken on your date. Independent of NASA.
Cosmic dust clouds and young, energetic stars inhabit this telescopic vista, less than 500 light-years away toward the northern boundary of Corona Australis, the Southern Crown. The dust clouds effectively block light from more distant background stars in the Milky Way. But the striking complex of reflection nebulae cataloged as NGC 6726, 6727, and IC 4812 produce a characteristic color as blue light from the region's young, hot stars is reflected by the cosmic dust. The dust also obscures from view stars still in the process of formation. At top right, smaller yellowish nebula NGC 6729 bends around young variable star R Coronae Australis. Near it, glowing arcs and loops shocked by outflows from embedded newborn stars are identified as Herbig-Haro objects. On the sky this field of view spans about 1 degree. That corresponds to almost 9 light-years at the estimated distance of the nearby star forming region.
Image credit: Josep Drudis