(Press-News.org) PASADENA, CA — September 26, 2023 — The Giant Magellan Telescope begins the four-year process to fabricate and polish its seventh and final primary mirror, the last required to complete the telescope’s 368 square meter light collecting surface, the world’s largest and most challenging optics ever produced. Together, the mirrors will collect more light than any other telescope in existence, allowing humanity to unlock the secrets of the Universe by providing detailed chemical analyses of celestial objects and their origin.
Last week, the University of Arizona Richard F. Caris Mirror Lab closed the lid on nearly 20 tons of the purest optical glass inside a one-of-a-kind oven housed beneath the stands of the Arizona Wildcats Football Stadium. The spinning oven will heat the glass to 1,165°C so as it melts, it is forced outward to form the mirror’s curved paraboloid surface. Measuring 8.4-meters in diameter—about two stories tall when standing on edge—the mirror will cool over the next three months before moving into the polishing stage.
At 50 million times more powerful than the human eye, “the telescope will make history through its future discoveries,” shares Buell Jannuzi, Principal Investigator for the fabrication of the Giant Magellan Telescope primary mirror segments, Director of Steward Observatory, and Head of the Department of Astronomy at the University of Arizona. “We are thrilled to be closing in on another milestone in the fabrication of the Giant Magellan Telescope.”
The most recently completed primary mirror is ready for integration into a giant support system prototype early next year for final optical performance testing. This testing will serve as the dress rehearsal for all seven primary mirrors. Once assembled, all seven mirrors will work in concert as one monolithic 25.4-meter mirror—a diameter equal to the length of a full-grown blue whale—resulting in up to 200 times the sensitivity and four times the image resolution of today’s most advanced space telescopes.
The Giant Magellan Telescope will be the first extremely large telescope to complete its primary mirror array. With strong operational infrastructure completed at the telescope site in Chile, focused manufacturing is taking place on the telescope’s critical subsystem before starting on the enclosure.
“We are in an important stage of fabrication, with much of the manufacturing happening in the United States,” shares Robert Shelton, President of the Giant Magellan Telescope.
The 39-meter-tall telescope structure is being manufactured with 2,100 tons of American steel at a newly-built manufacturing facility in Rockford, Illinois, and fabrication of the telescope’s first of seven adaptive secondary mirrors—a one for one pair with each of the seven primary mirrors—is underway.
“The combination of light-gathering power, efficiency, and image resolution will enable us to make new discoveries across all fields of astronomy,” shares Rebecca Bernstein, Chief Scientist for the Giant Magellan Telescope. “We will have a unique combination of capabilities for studying planets at high spatial and spectral resolution, both of which are key to determining if a planet has a rocky composition like our Earth, if it contains liquid water, and if its atmosphere contains the right combination of molecules to indicate the presence of life.”
The telescope is expected to see first light by the end of the decade, and will work to answer some of humanity’s most pressing questions: Where did we come from? Are we alone in the Universe?
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About
The Giant Magellan Telescope is the future of space exploration from Earth. Using seven of the world’s largest mirrors, the 25.4-meter telescope will produce the most detailed images ever taken of our Universe. It will uncover the cosmic mysteries of dark matter, investigate the origins of chemical elements, and verify signs of life on distant planets for the first time. The Giant Magellan Telescope is the work of the GMTO Corporation, an international consortium of thirteen research institutions representing six countries. The telescope is under construction in Chile and anticipated to be completed in the late 2020s. The Universe Awaits at giantmagellan.org.
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Professor Soon-Yong Kwon in the Department of Materials Science and Engineering and the Graduate School of Semiconductor Materials and Devices Engineering at UNIST, in collaboration with Professor Zonghoon Lee, has embarked on a pioneering research endeavor focusing on the development of high-performance p-type semiconductor devices, utilizing molybdenum ditelluride (MoTe2)—a compound renowned for its unique properties. This pioneering technology holds great promise for application in the next-generation complementary metal oxide semiconductor (CMOS) industry, where ultrafine technology is crucial.
CMOS ...
Nearly one in three Americans wear a wearable device, like a smartwatch, to track their health and fitness.
Studies have shown positive effects of increasing movement in ways that can be measured by these devices, especially for people who recently had a heart attack or other cardiovascular event.
But a Michigan Medicine-led report shows that adding a mobile health application to such devices yields mixed results. Tailored text messages to encourage high-risk people to move more may improve some short-term outcomes but doesn’t always improve physical activity levels for everyone.
The ...
A study digs into a topical debate: should institutions accept donations from bad people? Jeffrey Epstein donated to MIT after he was a convicted sex offender. The Sackler family donated to museums around the world, which had to decide whether to keep their names on display and whether to continue accepting funds after the family faced widespread criticism and legal consequences for pushing addictive painkillers on the public. Ethicists are often split on whether organizations should take money from morally tainted donors. The money can support good outcomes in the world, but the reputation of the organization may suffer and the public ...
Previous studies have shown that yoga therapy and lifestyle modifications have improved heart failure patients’ quality of life and enhanced their cardiovascular function. A new study, presented at the American College of Cardiology Asia 2023 conference, examines the long-term outcomes of yoga therapy to determine the benefit of adding yoga therapy as a complementary treatment in the management of heart failure.
Heart failure is a form of cardiovascular disease where the heart muscle is either too weak or too stiff to pump properly, often leading to fluid buildup, shortness of breath and other complications. ...
Over the past few years, the field of artificial intelligence (AI) has witnessed numerous breakthroughs. One such remarkable milestone was the development and adoption of chatbots and conversational agents based on large language models, including ChatGPT. These systems can engage in realistic, human-like conversations with users and help them in many ways, such as by curating information, generating recommendations, or assisting in complex tasks. Interestingly, owing to their pre-training on large amounts of data, chatbots like ChatGPT are capable of generating highly personalized recommendations, considering factors like user’s interests, ...
Hospital visits from alcohol- and substance-related disorders are driven by elevated temperatures and could be further affected by rising temperatures due to climate change, according to new research by environmental health scientists at Columbia University Mailman School of Public Health.
The study, which is published in the peer-reviewed journal Communications Medicine, is likely the first comprehensive investigation of the association between temperature and alcohol- and substance-related hospital visits.
“We ...
LA JOLLA (September 26, 2023)—Movement offers a window into how the brain operates and controls the body. From clipboard-and-pen observation to modern artificial intelligence-based techniques, tracking human and animal movement has come a long way. Current cutting-edge methods utilize artificial intelligence to automatically track parts of the body as they move. However, training these models is still time-intensive and limited by the need for researchers to manually mark each body part hundreds to thousands of times.
Now, Associate Professor Eiman Azim and team have created GlowTrack, a non-invasive movement tracking method that uses fluorescent dye markers to train ...
Key points
Biosensing has been valuable for detecting biomolecules, including novel coronavirus (SARS-CoV-2), but achieving both high sensitivity and rapidity has been challenging.
Rapid and high-sensitivity detection of SARS-CoV-2 was achieved by utilizing optical-to-electric frequency conversion of optical combs and active-dummy temperature compensation with dual-optical-comb configuration.
This enables ultra-early detection of infectious pathogens, health biomarkers, food contaminants, environmental hormones, and more, contributing to various preventive measures.
Research Introduction ...
Indigenous communities act in sophisticated ways to deter unauthorised mining in Colombia, shows a recently published book by Postdoctoral Researcher Diana Arbeláez-Ruiz from the University of Eastern Finland. The book focuses on Indigenous people and mining in Colombia’s North Cauca region, where multiple armed groups and illicit economies operate. The research the book is based upon was carried out in 2016–2019. As the illegal armed group presence and illicit economies situation in the region has intensified since, the book remains highly topical today.
Published by Routledge, the book documents what the Nasa Indigenous community do to stop unauthorised mining in their ...
*Embargoed until 07:00 BST / 08:00 CEST, 26 September 2023*
The grounding line of the southern Ronne Ice Shelf in Antarctica can shift up to 15 km (six miles) with changing tides, new analysis shows. The research, published today in The Cryosphere, examines the key region where land-based Antarctic ice spills over into the surrounding ocean. Observing and understanding the dynamics of this region can help scientists predict Antarctica’s response to climate change, and so how much global sea levels will rise.
“We typically think of ice sheet change as being very slow, ...
