FAR AWAY SECRETS UNVEILED from the REALLY DEEP PAST
Using two space-based telescopes with an assist from gravitational lensing courtesy of galaxy cluster Abell 2744
How far is far away?
13 billion lightyears — Looking into some really deep history here:
This is light from when our universe was just 650 million years old.
Images captured by the Hubble and Spitzer space telescopes
Figure 1: Image of the distant galaxy, named Y1, discovered behind the galaxy cluster Abell 2744. The photometric redshift of the Y1 galaxy is z~8.0, placing it at approximately 13 billion lightyears. The galaxy is thus seen as it was 650 million years after the Big Bang, providing a unique view on galaxy formation in the early Universe, during the so-called phase of cosmic reionization. Source: N. Laporte (IAC)
Figure 2: Multi-band (false-color) image of the galaxy cluster Abell 2744 taken with the Hubble Space Telescope, showing many "arcs" (strongly lensed background galaxies showing up in blue) as well as other distant galaxies. Source: H. Atek, J.-P. Kneib (EPFL)
Figure 3: Multi-band (false-color) image of the galaxy cluster Abell 2744 taken with the Hubble Space Telescope. Taken from the 1st press release of the “Hubble Frontier Fields” projects in January 2014. Source: NASA/ESA