1、M100 is a member of the huge Virgo cluster of an estimated2,500 galaxies.
2、The lovely island universe resides in the large Virgo cluster of galaxies.
3、Its broad arms are distorted by gravitational interaction with a fellow Virgo cluster member, giant elliptical galaxy NGC 4697.
4、He notes that the Milky Way's north side points toward the Virgo cluster, an enormous nearby gathering of galaxies.
