Cosmic Treasure Chest

This star-studded image shows the globular cluster Terzan 9 in the constellation Sagittarius, towards the centre of the Milky Way. The NASA/ESA Hubble Space Telescope captured this glittering scene using its Wide Field Camera 3 and Advanced Camera for Surveys

Globular clusters are stable, tightly bound groupings of tens of thousands to millions of stars. As this image demonstrates, the hearts of globular clusters can be densely packed with stars; the night sky in this image is strewn with so many stars that it resembles a sea of sequins or a vast treasure chest crammed with gold.

This starry snapshot is from a Hubble programme investigating globular clusters located towards the heart of the Milky Way. The central region of our home galaxy contains a tightly packed group of stars known as the Galactic bulge, which is also rich in interstellar dust. This dust has made globular clusters near the Galactic centre difficult to study, as it absorbs starlight and can even change the apparent colours of the stars in these clusters. Hubble's sensitivity at both visible and infrared wavelengths has allowed astronomers to measure how the colours of these globular clusters have been changed by interstellar dust, and thereby to establish their ages.

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Credit:

ESA/Hubble & NASA, R. Cohen

About the Image

Id:potw2224a
Type:Observation
Release date:13 June 2022, 06:00
Size:2740 x 2443 px

About the Object

Type:Unspecified : Star : Grouping : Cluster : Globular
Constellation:Sagittarius
Category:Star Clusters

Image Formats

Large JPEG
3.3 MB
Screensize JPEG
618.1 KB

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1024x768
621.7 KB
1280x1024
956.6 KB
1600x1200
1.2 MB
1920x1200
1.4 MB
2048x1536
1.8 MB

Coordinates

Position (RA):18 1 38.98
Position (Dec):-26° 50' 21.54"
Field of view:2.28 x 2.03 arcminutes
Orientation:North is 227.3° left of vertical


Colours & filters

BandWavelengthTelescope
Optical
V
606 nm Hubble Space Telescope
ACS
Infrared
YJ
1.1 μm Hubble Space Telescope
ACS
Infrared
H
1.6 μm Hubble Space Telescope
WFC3

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