Hercules Globular Cluster is a globular cluster of several hundred thousand stars in the constellation of Hercules. A globular cluster is a spherical collection of stars. Globular clusters are very tightly bound by gravity, with a high concentration of stars towards their centres. Globular clusters are found in nearly all galaxies. In spiral galaxies like the Milky Way they are mostly found in the outer spheroidal part of the galaxy – the galactic halo.

Distance: 22,180 light years

Bottom left you can see the spiral galaxy NGC 6207. Distance: 30 million light years

The Pleiades also known as The Seven Sisters, is an open star cluster in the constellation Taurus. It is one of the nearest star clusters to Earth and is the most obvious cluster to the naked eye in the night sky.

The cluster is dominated by hot blue luminous stars that have formed within the last 100 million years. Reflection nebulae around the brightest stars is likely to be an unrelated dust cloud in the interstellar medium through which the stars are currently passing.

Distance: 444 light years