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When we look at the night sky, how far back in time can we see?


When we look at the night sky, how far back in time can we see?
January 8, 2021 at 11:22 am
When we look up at the stars, we are looking back in time. The light entering our eyes from these distant objects set off years, decades or millennia earlier. Every time we look at something ‘up there’ we’re seeing it as it was in the past.
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With enormous modern telescopes and sensitive detectors, professional astronomers can see far beyond what most back garden telescopes are capable of.
The Hubble eXtreme Deep Field (XDF) was created by using 10 years of Hubble Space Telescope images and reveals galaxies spanning 13.2 billion years in time: about 0.6 years after the birth of the Universe. The deep field captures such distant light, most of the galaxies are seen as they existed in their infancy. Credit: NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team ....

United Kingdom , Seven Sisters , Neath Port Talbot , Tom Howard , Santa Cruz Hubble , King Edwin , Johann Strauss , Francis Drake , Queen Victoria , Tommy Nawratil Ccdguide , Stuart Atkinson , David Willacy Eyeem , Manfred Wasshuber , Alfred Nobel , Dwight Crawley , Trevor Williams Getty , Philip Pugh , G Brammer Stsc , P Oesch University Of California , Dokkum Yale University , G Illingworth University Of California , P Oesch Yale University , R Bouwens Leiden University , Trevor Williams , Extreme Deep Field , Hubble Space Telescope ,

Researchers measure and confirm the distance to oldest, farthest galaxy GN-z11 in the universe- Technology News, Firstpost


Researchers measure and confirm the distance to oldest, farthest galaxy GN-z11 in the universe
The team of researchers measured the redshift of GN-z11, which is the light stretches out, becomes redder, the farther it travels.
Dec 18, 2020 10:14:31 IST
Researchers from the University of Tokyo have now accurately measured the distance to the oldest and furthermost galaxy that has ever been detected. As per a statement released by the university, a team of astronomers used the Keck I telescope to measure the distance to the ancient GN-z11 galaxy. The galaxy is distant it defines the actual boundary of the universe that we have been able to observe.  According to the authors, the study could shed light on a period in the history of the universe when it was relatively young being only a few hundred million years old. ....

United States , Nobunari Kashikawa , G Brammer Stsc , Department Of Astronomy , Dokkum Yale University , University Of Tokyo , G Illingworth University Of California , P Oesch Yale University , Professor Nobunari Kashikawa , Yale University , Santa Cruz , Hubble Space Telescope , ஒன்றுபட்டது மாநிலங்களில் , துறை ஆஃப் வானியல் , பல்கலைக்கழகம் ஆஃப் டோக்கியோ , க் இலிஂக்‌வர்த் பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , ப் ஒஎஸ்ச் யேல் பல்கலைக்கழகம் , யேல் பல்கலைக்கழகம் , சாந்தா குரூஸ் , ஹப்பிள் இடம் தொலைநோக்கி ,