When amateur astronomers turn their telescopes toward Hercules, the usual target is Messier 13, one of the brightest, easiest-to-find globular clusters in the northern sky. But a stone’s throw away is another bright companion – M92 – that runs a close second, containing some 330,000 stars orbiting the Milky Way’s core at a distance of 33,000 light years. Visible to the unaided eye under dark sky conditions, M92 was discovered by Johann Elert Bode in 1777. Four years later, Charles Messier spotted it and added the cluster to his famous catalogue. Neither man could have imagined the splendour revealed by the Hubble Space Telescope as seen in this stunning view.
A distant planet orbiting two red dwarf stars, found by its warping of spacetime, has been confirmed using observations from the NASA/ESA Hubble Space Telescope. The planet’s mass caused what is known as a microlensing event, where light is bent by an object’s gravitational field. This is the first circumbinary planet to be confirmed following detection of a microlensing event.
Located some 22,000 light-years away in the southern constellation of Musca (The Fly), this tightly packed collection of stars — known as a globular cluster — goes by the name of NGC 4833. Globular clusters are thought to contain some of the oldest stars in our galaxy. This NASA/ESA Hubble Space Telescope image shows the dazzling stellar group in all its glory.