Gravitational Lensing

Just as a wanderer in the desert can experience mirages, when light from remote objects is bent by the warm air hovering just above the sand, we may also see mirages in the Universe. The mirages we see with a modern telescope like the Hubble Space Telescope do not arise from oases, but instead from remote clusters of galaxies - huge concentrations of mass.

Credit:

NASA, ESA, Andrew Fruchter (STScI), and the ERO team (STScI + ST-ECF

)

About the Image

Id:heic9910c
Type:Collage
Release date:24 January 2000, 15:00
Related releases:heic9910
Size:2809 x 2122 px

About the Object

Name:Abell 2218
Type:Early Universe : Galaxy : Type : Gravitationally Lensed
Early Universe : Galaxy : Grouping : Cluster
Distance:z=0.17 (redshift)
Category:Galaxies

Colours & filters

BandWavelengthTelescope
Optical
B
450 nm Hubble Space Telescope
WFPC2
Optical
V
606 nm Hubble Space Telescope
WFPC2
Infrared
I
814 nm Hubble Space Telescope
WFPC2

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