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Showing posts from July, 2023

ALMA studies the cosmic nursery and stellar graveyard in the most distant galaxy.

  An international team of astronomers, spearheaded by Professor Yoichi Tamura of Nagoya University, the recent have taken one step closer to unlocking the secrets of the universe. Utilizing the Atacama Large Millimeter/submillimeter Array (ALMA), Professor Tamura's team has captured high-resolution images of a fledgling galaxy that existed a mere 600 million years after the Big Bang. These groundbreaking images have revealed never-before-seen structures formed through the interplay of dark and emission nebulae – a captivating tapestry where these nebulae coalesce to form a gargantuan cavity reminiscent of a ‘superbubble’. In 2012, Professor Tamura's team began their exploration into ultra-distant galaxies with ALMA and achieved a major breakthrough in 2016 by detecting radio waves from oxygen in a record-setting distant galaxy. In 2018, they identified the most distant galaxy ever known by detecting radio waves emitted from oxygen 13.2 billion light-years away, and in 2019 the...

Can webb's spectrum reveal water vapour?

  Have you ever looked up at the night sky and wondered what was out there? Have you ever wondered how stars are born and what might be hiding in the darkness? Recently, the Space Telescope Science Institute released a spectrum of the protoplanetary disk of PDS 70, using Webb’s MIRI. This spectrum displays a number of emission lines from water vapor, which scientists determined to be in the system’s inner disk, at distances of less than 100 million miles from the star. It is believed that rocky, terrestrial planets may be forming in this region. The presence of water vapor in the protoplanetary disk of PDS 70 suggests that it could potentially be harboring some form of life. While it is impossible to know for certain yet, this information is encouraging for astrobiologists who are looking for signs of life elsewhere in our universe. These discoveries shed light on how planets form and evolve over time. By studying protoplanetary disks like PDS 70, can gain insight into the composit...