orion\'s belt in the winter sky, stars alnitak, alnilam, mintaka, horsehead nebula, orion nebula

orions belt orionids winter sky alnitak alnilam mintaka horsehead nebula orion galaxy open cluster globular stars and space dust universe astrophotography milky constellation way star night cosmos astronomy background science telescope nature light planet deep gas infinity plasma astro supernova astrophoto colorful hole explosion cosmic photo