From toddlers to babies

In the darkness of the distant Universe, galaxies resemble glowing fireflies, flickering candles, charred embers floating up from a bonfire, light bulbs softly shining. This Picture of the Week, captured by the NASA/ESA Hubble Space Telescope, shows a massive group of galaxies bound together by gravity: a cluster named RXC J0032.1+1808.

This 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.

Expected to launch in 2018, the JWST is designed to see in infrared wavelengths, which is exceedingly useful for observing distant objects. As a result of the expansion of the Universe, very distant objects are highly redshifted (their light is shifted towards the redder end of the spectrum) and so infrared telescopes are needed to study them. While Hubble currently has the ability to peer billions of years into the past to see “toddler” galaxies, the JWST will have the capability to study “baby” galaxies, the first galaxies that formed in the Universe.

Credit:

ESA/Hubble & NASA, RELICS

About the Image

Id:potw1819a
Type:Observation
Release date:7 May 2018, 06:00
Size:6620 x 6092 px

About the Object

Name:RXC J0032.1+1808
Type:Early Universe : Galaxy : Grouping : Cluster
Constellation:Pisces
Category:Galaxies

Image Formats

Large JPEG
17.9 MB
Screensize JPEG
218.4 KB

Zoomable


Wallpapers

1024x768
198.3 KB
1280x1024
338.4 KB
1600x1200
535.3 KB
1920x1200
708.3 KB
2048x1536
989.6 KB

Coordinates

Position (RA):0 32 11.35
Position (Dec):18° 7' 47.29"
Field of view:3.31 x 3.04 arcminutes
Orientation:North is 35.3° left of vertical

Colours & filters

BandWavelengthTelescope
Optical
B
435 nm Hubble Space Telescope
ACS
Optical
V
606 nm Hubble Space Telescope
ACS
Infrared
J/H
1.4 μm Hubble Space Telescope
WFC3
Infrared
J
1.25 μm Hubble Space Telescope
WFC3
Infrared
Z
1.05 μm Hubble Space Telescope
WFC3
Infrared
H
1.6 μm Hubble Space Telescope
WFC3
Optical
I
814 nm Hubble Space Telescope
ACS

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