🤖 Automated update (2023-06-23T18:01:19+0000)

src/_posts/2023-06-23-487751.md

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+---json
+{
+  "date": "2023-06-23T07:00:00-04:00",
+  "title": "Hubble Glimpses a Glistening Cluster",
+  "canonical_url": "https://www.nasa.gov/image-feature/goddard/2023/hubble-glimpses-a-glistening-cluster",
+  "image_url": "https://www.nasa.gov/sites/default/files/thumbnails/image/hubble_ngc6544_potw2325a.jpg",
+  "image_alt": "The view is filled with small stars, on a dark background. Stars become much denser and brighter around a core just right of center. Most of the stars are small, but some are larger with a round, brightly colored glow and four sharp diffraction spikes.",
+  "author": "Andrea Gianopoulos"
+}
+---
+
+The teeming stars of the globular cluster NGC 6544 glisten in this image from the NASA/ESA [Hubble Space Telescope](/mission_pages/hubble/main/index.html). 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](/content/observatory-instruments-advanced-camera-for-surveys) and [Wide Field Camera 3](/content/observatory-instruments-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.
+
+_**Text credit: European Space Agency (ESA)  
+Image credit: ESA/Hubble & NASA, W. Lewin, F. R. Ferraro**_
+
+#### **_Media Contact:_**
+
+**_Claire Andreoli_**  
+**_NASA's_** [**_Goddard Space Flight Center_**](http://www.nasa.gov/goddard), **_Greenbelt, MD_**  
+[**_[email protected]_**](mailto:[email protected])