NASA Hubble Space Telescope Spots Glistening Cluster 8,000 Light-Years Away
By NASA information center // June 24, 2023
cluster is known as NGC 6544
This cluster of tightly bound stars lies more than 8,000 light-years away from Earth and is, like all globular clusters, a densely populated region of tens of thousands of stars.
This image of NGC 6544 combines data from two of Hubble’s instruments, the Advanced Camera for Surveys and Wide Field Camera 3, as well as two separate astronomical observations.
The first observation was designed to find a visible counterpart to the radio pulsar discovered in NGC 6544.
A pulsar is the rapidly spinning remnant of a dead star, emitting twin beams of electromagnetic radiation like a vast astronomical lighthouse. This pulsar rotates particularly quickly, and astronomers turned to Hubble to help determine how this object evolved in NGC 6544.
The second observation which contributed data to this image was also designed to find the visible counterparts of objects detected at other electromagnetic wavelengths.
Instead of matching up sources to a pulsar, however, astronomers used Hubble to search for the counterparts of faint X-ray sources. Their observations could help explain how clusters like NGC 6544 change over time.
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