On Tue, 13 Jun 2017 08:58:37 +0100, Martin Brown
wrote:

On 13/06/2017 07:59, StarDust wrote:
On Monday, June 12, 2017 at 4:06:08 PM UTC-7, Razzmatazz wrote:
M13 is now at a good point, high up at night. A quick (very quick) look at this bauble.

Can you find the very small background galaxy in this image? It's at magnitude 18.

What are globular's exactly?

Very pretty tight agglomerations of many stars that are gravitationally
bound together and continue to get more tightly bound by flinging the
odd star out to infinity whilst the rest contract into towards the core.

Until they evaporate completely (which takes somewhat longer than the
current age of the Universe).