Merope's Reflection Nebula
Explanation: <a href="https://en.wikipedia.org/wiki/Reflection_nebula" target="_blank" rel="nofollow noopener noreferrer">Reflection Nebula</a> reflect light from a nearby star. Many small <a href="https://periodic.lanl.gov/6.shtml" target="_blank" rel="nofollow noopener noreferrer">Periodic Table of Elements: Los Alamos National Laboratory</a> grains in the nebula reflect the light. The blue color typical of #-Link-Snipped-# is caused by blue light being #-Link-Snipped-# by the carbon <a href="https://apod.nasa.gov/apod/ap980104.html" target="_blank" rel="nofollow noopener noreferrer">APOD: January 4, 1998 - Fractal Interstellar Dust Up Close</a> than red light. The brightness of <a href="https://www.youtube.com/watch?v=fq7vKB7o0GI" target="_blank" rel="nofollow noopener noreferrer">Zooming Into Merope in the Pleiades (1999) - YouTube</a> is determined by the size and density of the reflecting grains, and by the color and brightness of the neighboring star(s). #-Link-Snipped-#, <a href="https://www.starkeeper.it/Merope.htm" target="_blank" rel="nofollow noopener noreferrer">Astrophotography by Leonardo Orazi - Photo Gallery - Nebulae - Merope's Reflection Nebula</a>, surrounds #-Link-Snipped-#, one of the brightest stars in the <a href="https://apod.nasa.gov/apod/ap060109.html" target="_blank" rel="nofollow noopener noreferrer">APOD: 2006 January 9 - M45: The Pleiades Star Cluster</a> (M45). The<a href="https://en.wikipedia.org/wiki/Pleiades" target="_blank" rel="nofollow noopener noreferrer">Pleiades</a> nebulosity is caused by a #-Link-Snipped-# between an <a href="https://apod.nasa.gov/apod/open_clusters.html" target="_blank" rel="nofollow noopener noreferrer">APOD Index - Stars: Open Clusters</a> of stars and a dusty <a href="https://apod.nasa.gov/apod/ap120129.html" target="_blank" rel="nofollow noopener noreferrer">APOD: 2012 January 29 - Molecular Cloud Barnard 68</a>.
<a href="https://apod.nasa.gov/apod/ap120215.html" target="_blank" rel="nofollow noopener noreferrer">APOD: 2012 February 15 - Meropes Reflection Nebula</a>.