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"The Last Days of Hubble?" --A Crowning Glory of the Human Species (Weekend Feature)


 
“Hubble isn’t just a satellite; it’s about humanity’s quest for knowledge,” said astronaut and former NASA Chief Scientist, John M. Grunsfeld about the iconic space telescope. Looking at Hubble’s ground-breaking “Deep Field” images that show the most distant galaxies that can be observed in visible light leaves us feeling like something else is going about its business out there.
Transformed Our View of Where We Are
“We are born into the world like actors who are placed on a stage without a script. The Hubble Space Telescope has transformed our understanding of that stage,” wrote Harvard astronomer, Avi Loeb in an email to The Daily Galaxy. “From discovering four moons around Pluto to gorgeous images of the delivery rooms of young stars and planets, to the accelerated expansion of the universe at large, this telescope transformed our view of where we are to the realm of the magnificent.” ....

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Why does this galaxy look older than its years? | Space


February 25, 2021
To the extent that we can see them, galaxies in the very early universe should look relatively young and unformed. But galaxy ALESS 073.1 is a surprise to astronomers: it looks more mature than we’d have any reason to expect. Why?
Galaxy ALESS 073.1, located 12 billion light-years away and formed when the universe was only 10% of its current age, has not only a large bulge but also a rotating disk, going against common understanding of galaxy formation. This image, observed with the ALMA telescope, is incredibly detailed for such a distance. Image via Federico Lelli et al./ UBC.
Astronomers have found a mightily surprising early-universe galaxy that appears more mature than it should for its age. They announced this result on February 11, 2021, pointing out that galaxy ALESS 073.1 is located about 12 billion light-years away. That means we see this galaxy as it was when the universe was only 1.2 billion years old, or 10% of its current age. At such ....

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JADES will go deeper than the Hubble Deep Fields | Space


January 31, 2021
Astronomers announced this month that a new deep-field survey called JADES will be carried out with the James Webb Space Telescope, Hubble’s much-anticipated successor. The Webb is due to launch later this year.
The Hubble Ultra Deep Field (in its eXtreme version) is the deepest view of the universe yet obtained … and will be, until JADES takes over. It stretches approximately 13 billion light-years and includes approximately 10,000 galaxies. It took 11.3 days for the Hubble Space Telescope to collect these ancient photons. Try downloading the largest version and zoom in on different sections. We’re seeing these galaxies as they were billions of years ago. How might they look today? Image via NASA/ ESA/ S. Beckwith (STSci)/ HUDF team. ....

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