Djorgovski globular cluster 1 in Scorpio - Globular cluster Djorgovski 1 in Scorpius - The...

Djorgovski globular cluster 1 in Scorpio - Globular cluster Djorgovski 1 in Scorpius - The Djorgovski globular cluster 1 is a cluster of light stars located near the galactic center, 40,000 years - light from Earth. Its discovery is recent (1987) and studies show that its stars are composed only of hydrogene and helium. The absence of heavier elements that are usually present in stars remains an enigma. Image obtained by the Hubble Space Telescope (HST). The NASA/ESA Hubble Space Telescope has imaged an area so jam - packed with stars that they almost overwhelm the inky blackness of space. This includes the globular star cluster Djorgovski 1, which was only discovered in 1987 Djorgovski 1 is located close to the centre of our Milky Way Galaxy, within the bulge. If the galaxy is thought of as being like a city, then this bulge is the very busiest district at its centre. Djorgovski 1's proximity to this hub - - within just a few degrees - - explains why the picture is teeming with stars. Globular clusters like Djorgovski 1 formed early in the Milky Way's history, and as such may hold clues about the inner galaxy's early evolution. However, with so much material in the way, obtaining accurate data is problematic. To make matters worse, these stars are faint. Even the most luminous stars in Djorgovski 1 are fainter than the brightest giant stars in the bulge. Another quandary is apparent: how do you know which stars belong to Djorgovski 1, and which are from the bulge? To determine this, astronomers have studied the chemical composition of numerous stars in the area. Stars with a similar composition likely belong in the same group, like siblings in a family. This technique has successfully provided the information to distinguish between stars in Djorgovski 1 and the surrounding bulge. These studies also reveal that Djorgovski 1's stars contain hydrogen and helium, but not much else. In astronomical terms, they