Tonight (May 25), from mid-northern latitudes, you can easily find the brilliant star Vega in the eastern sky at dusk and nightfall. Vega acts as your guide star to the Keystone – a pattern of four stars in the constellation Hercules.
Hubble Views Two Galaxies Merging - 12/30/2015 - This image, taken with the Wide Field Planetary Camera 2 on board the NASA/ESA Hubble Space Telescope, shows the galaxy NGC 6052, located around 230 million light-years away in the constellation of Hercules. It would be reasonable to think of this as a single abnormal galaxy, and it... https://www.nasa.gov/image-feature/goddard/hubble-views-two-galaxies-merging
NGC 6210 - This small but fairly bright planetary nebula is located in the constellation Hercules at a distance of 6,500 light-years. The odd shape of this planetary nebula is due to multiple shells ejected from the dying star within. Its mass is slightly less than our Sun's