The cluster is located in an area with a lot of stars and dust clouds that make it difficult to observe, but the Hubble telescope still managed to take a picture.
Most recently, Hubble took a dazzling image of the globular star cluster Terzan 9, 23,000 light-years from Earth. inverse.
Globular clusters are groups of tens of thousands or even hundreds of thousands of stars bound together by gravity into a dense, brilliant sphere about 100 light-years wide.
They are among the oldest objects in the galaxy. All the globular clusters that astronomers have studied so far are long past their star formation period. But how exactly globular clusters form remains an open question.
One of the most widely accepted ideas about the origin of globular clusters is that they are the remnants of dwarf galaxies that were captured long ago by the irresistible gravity of the Milky Way. This would explain why many of them have retrograde (or reverse) orbits.
The dwarf galaxy hypothesis would also explain another strange property of globular star clusters. Most star clusters form in a single cosmic event, when their stars form from a dense cloud of gas and dust. But globular clusters are different, containing stars of several different ages.
Mapping the ages of these stars could help astronomers better understand the origin of globular clusters, which number about 150 in our galaxy. Many of them, including Terzan 9, are located in the central part of the galaxy, a cosmic region densely populated by stars and clouds of interstellar dust.
The dust absorbs most wavelengths of light, so for astronomers it’s like a filter that changes the brightness and color of the stars behind it. And there’s a big problem with that, because the brightness and color of a star tells astronomers about its age and what it’s made of. However, the Hubble instruments are sensitive enough to pick up the effects of the dust filter and reveal the true colors of the stars.
Recall that the other day the space telescope captured another equally stunning image, namely – giant cluster of galaxies known as Abell 1351. The cluster is so massive that it distorts space-time.
But In early June, Hubble took pictures of two very distant galaxies. collectively known as Arp 303. They are 275 million light-years away.