What's in the night sky this month?Sunday 23rd of July
Like the others of its type, M27 is a bubble of gas that has been ejected by a star at the end if its life. This twin-lobed nebula is the most spectacular planetery.
Next up is another fine globular cluster, M92. Burnham noted that if M92 were located in any other constellation, it would be considered a showpiece. Instead, it plays second fiddle to M13.
The constellation Draco contains one Messier object, M102, which is an edge-on galaxy with a dark dust lane.
M5 is a 5th magnitude globular star cluster in Serpens Caput located about 8 degrees southwest of Alpha Serpentis. It is one of the finest globulars for viewing in the late spring/summer sky.
Globular cluster M10 lies in the constellation of Ophiuchus. This is a very bright cluster with a central region that appears slightly pear-shaped.
Messier object 57, the Ring Nebula, is in the constellation Lyra, high in the northern hemisphere sky during July and August. A nice object to observe in telescopes.
Another fine globular cluster to be found in Sagittarius is M55. This is a large cluster with a somewhat loose arrangement of stars. Its apparent size is about 2/3 that of the full moon.
Known more commonly as the Lagoon Nebula, M8 is a beautiful cloud of gas illuminated by a 5.9 magnitude star inside. The nebula is about 150 light-years in diameter and lies about 5,200 light-years from Earth.
M13 is one of the most prominent and best known globular clusters. Visible with binoculars in the constellation of Hercules, M13 is frequently one of the first objects found by curious sky gazers.