Zooming in on the early Universe

This busy image is a treasure trove of wonders. Bright stars from the Milky Way sparkle in the foreground, the magnificent swirls of several spiral galaxies are visible across the frame, and a glowing assortment of objects at the centre make up a massive galaxy cluster. Such clusters are the biggest objects in the Universe that are held together by gravity, and can contain thousands of galaxies of all shapes and sizes. Typically, they have a mass of about  one million billion times the mass of the Sun — unimaginably huge!

Their incredible mass makes clusters very useful natural tools to test theories in astronomy, such as Einstein’s theory of general relativity. This tells us that objects with mass warp the fabric of spacetime around them; the more massive the object, the greater the distortion. An enormous galaxy cluster like this one therefore has a huge influence on the spacetime around it, even distorting the light from more distant galaxies to change a galaxy’s apparent shape, creating multiple images, and amplifying the galaxy’s light — a phenomenon called gravitational lensing.

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.

Credit:

ESA/Hubble & NASA, RELICS

About the Image

Id:potw1827a
Type:Observation
Release date:2 July 2018, 06:00
Related science announcements:sci18003
Size:6280 x 6243 px

About the Object

Name:RXC J2211.7-0350
Type:Early Universe : Galaxy : Grouping : Cluster
Early Universe : Cosmology : Phenomenon : Lensing
Distance:z=0.27 (redshift)
Constellation:Aquarius
Category:Galaxies

Image Formats

Large JPEG
15.8 MB
Screensize JPEG
232.8 KB

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193.3 KB
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332.9 KB
1600x1200
530.6 KB
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986.5 KB

Coordinates

Position (RA):22 11 45.94
Position (Dec):-3° 49' 42.69"
Field of view:3.14 x 3.12 arcminutes
Orientation:North is 1.3° right of vertical

Colours & filters

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

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