... Virgo Cluster Galaxies . ... Pictured are several galaxies of the Virgo Cluster, the closest cluster of galaxies to the Milky Way. ... Blue Jet Lightning . ... These atmospheric discharges occur very high in the Earth's atmosphere - much higher than the familiar form of lightning. ... M104: The Sombrero Galaxy . ... The prominent dust lane and halo of stars and globular clusters give this galaxy its name. ... Low density gas is shown as blue, and high density gas as red. Eagle EGGs in M16 . ...