Cosmic archaeology

This NASA/ESA Hubble Space Telescope image is chock-full of galaxies — each glowing speck is a different galaxy, bar the bright flash in the middle of the image which is actually a star lying within our own galaxy that just happened to be in the way. At the centre of the image lies something especially interesting, the centre of the massive galaxy cluster called WHL J24.3324-8.477, including the brightest galaxy of the cluster.

The Universe contains structures on various scales — planets collect around stars, stars collect into galaxies, galaxies collect into groups, and galaxy groups collect into clusters. Galaxy clusters contain hundreds to thousands of galaxies bound together by gravity. Dark matter and dark energy play key roles in the formation and evolution of these clusters, so studying massive galaxy clusters can help scientists to unravel the mysteries of these elusive phenomena.

This infrared image was taken by Hubble’s Advanced Camera for Surveys and Wide-Field Camera 3 as part of an observing programme called RELICS (Reionization Lensing Cluster Survey). RELICS imaged 41 massive galaxy clusters with the aim of finding the brightest distant galaxies for the forthcoming NASA/ESA/CSA James Webb Space Telescope (JWST) to study. Such research will tell us more about our cosmic origins.

 

Credit:

ESA/Hubble & NASA

About the Image

Id:potw1743a
Type:Observation
Release date:23 October 2017, 06:00
Size:6879 x 6479 px

About the Object

Name:WHL J24.3324-8.477
Type:Early Universe : Star : Grouping : Cluster
Distance:z=0.566 (redshift)
Constellation:Cetus
Category:Cosmology

Image Formats

Large JPEG
20.0 MB
Screensize JPEG
226.6 KB

Zoomable


Wallpapers

1024x768
201.6 KB
1280x1024
335.0 KB
1600x1200
529.2 KB
1920x1200
698.8 KB
2048x1536
978.3 KB

Coordinates

Position (RA):1 37 25.16
Position (Dec):-8° 27' 24.18"
Field of view:3.44 x 3.24 arcminutes
Orientation:North is 29.8° left of vertical

Colours & filters

BandWavelengthTelescope
Optical
B
435 nm Hubble Space Telescope
ACS
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
V
606 nm Hubble Space Telescope
ACS
Optical
I
814 nm Hubble Space Telescope
ACS
Infrared
H
1.6 μm Hubble Space Telescope
WFC3

Also see our


Accelerated by CDN77