ORAU的动态

James Webb Telescope- Unfolding the Universe! The James Webb Space Telescope, a marvel of modern technology, plays a pivotal role in unraveling the mysteries of the universe. This advanced tool, utilized by astrophysicists and astronomers, offers a unique vantage point to observe key stages in the evolution of our cosmos. With its cutting-edge capabilities, the Webb telescope enables the study of the transformation of initial stars into galaxies, the subsequent collisions and mergers of these galaxies into larger cosmic structures, thus shaping the universe as we perceive it today. This groundbreaking exploration holds the promise of delivering invaluable insights into the cosmic history that underpins our very existence. Moreover, it poses the profound question: are we truly alone in this vast universe? Credit: NASA's Goddard Space Flight Center and the Advanced Visualization Laboratory at the National Center for Supercomputing #SpaceExploration #JamesWebbTelescope

April 2024 presents an opportunity to experience two rare and spectacular astronomical sightings in northern New England. A total solar eclipse will occur for the first time in our region since 1932, and the comet called 12p/ Pons-Brooks will also be visible during the month, as it makes its approach to the sun after an absence of 70 years. ?? Read all about it in “An Astronomical Double-Header” by Michael J. Caduto in our spring magazine: https://conta.cc/3J5r2lB ???? This detail from a NASA eclipse map charts the path of totality across the Northeast. The ovals inside the path show the shape of the Moon’s shadow on Earth’s surface. Image by NASA / Scientific Visualization Studio / Michala Garrison; Eclipse Calculations by Ernie Wright, NASA Goddard Space Flight Center. ?? Inset: A magnified view of Comet 12p/Pons-Brooks by Dan Bartlett.

Black Hole Hubble Did you know Hubble helped verify that black holes exist? Since launching in 1990, it's helped astronomers learn lots about these cosmic objects. For example, this amazing view taken by Hubble Space Telescope in the 1990s show disks of dust fueling black holes at the centers of galaxies. Hubble taught us that black holes exist at the hearts of most galaxies. It also completed a census of galaxies, and showed that a black hole’s mass depends on the mass of its host galaxy’s central bulge of stars: the larger the galaxy, the larger the black hole. A yellow-orange, and reddish disk (looking like a doughnut) surrounded by broader white and rust colored disk. (Walter Jaffe/Leiden Observatory, Holland Ford/JHU/STScI, and NASA) Do you know why the Launch of @boeing Starliner was scrubbed? Find out inside our latest episode! ??? or ?? #spaceinfo

They're black holes, but they're some of the brightest objects in the universe—and thanks to NYU astronomers, we now know the locations of about 1.3 million of them. NYU's David Hogg and colleagues have completed the largest map of the universe's known quasars, which are powered by supermassive black holes at the center of galaxies and can be hundreds of times brighter than an entire galaxy. As the black hole’s gravitational pull spins up nearby gas, the process generates an extremely bright disk, and sometimes jets of light, that telescopes can observe. The scientists built the new map, which charts the largest-ever volume of the universe, using data from the European Space Agency’s Gaia space telescope. The furthest quasar in it was shining when the universe was only 1.5 million years old. Image: A quasar seen at the center of a faraway galaxy in an artistic concept by @NASA. Credit: NASA/JPL-Caltech. Learn more about the research, published this week in the Astrophysical Journal: https://spr.ly/6040kI2tK

UC Santa Cruz researchers contributed to new studies out this week that enhance our understanding of exoplanets. The first, in the Astrophysical Journal Supplement, catalogs 126 exoplanets discovered with NASA’s TESS and W. M. Keck Observatory, detailing diverse planet types. A second set, published in Nature, investigates "puffy" exoplanets like WASP-107b using data from NASA's James Webb and Hubble Space Telescopes, attributing their puffiness to tidal heating from their non-circular orbits. This research broadens our knowledge of exoplanet characteristics and formation. ?? ?? https://bit.ly/44WStrP

Studying the history of the universe: A conversation with Taylor Hutchison, Ph.D., NASA NPP Fellow by Michael Holtz Taylor Hutchison, a NASA Postdoctoral Fellow working on the James Webb Space Telescope, says her research focus is on distant galaxies –some of the first galaxies ever found in the early universe — which give us a view toward understanding the history of the universe. In this episode of Further Together, host Michael Holtz asks […] #boomers #babyboomers

The Nasa Webb and Hubble Telescopes Unraveling the mysteries of the cosmos, The NASA Webb and Hubble Telescopes have been instrumental in providing us with unprecedented insights into the vast expanse of the universe. Despite their groundbreaking discoveries, a perplexing puzzle continues to persist – the discrepancy in the universe's expansion rate. The Hubble Space Telescope, launched in 1990, revolutionized our understanding of the universe by capturing stunning images of distant galaxies and celestial phenomena. Its successor, the James Webb Space Telescope, launched on December 25, 2021 is pushing boundaries of exploration even further with its advanced capabilities. Recent observations using these powerful telescopes have revealed a discrepancy in the measurements of the universe's expansion rate, known as the Hubble constant. While different methods yield varying values for this fundamental parameter, the discrepancy remains unresolved, posing a significant challenge to our current understanding of cosmology. #Tech_Thursday #ISTE_BITS

Following the April publication of my piece “Taking Aristotle to the Moon and Beyond,” the quarterly journal Issues in Science and technology, a joint publication of the US National Academy of Sciences and Arizona State University, is hosting a panel discussion on June 6, 2:30 Eastern Time, to discuss how philosophy can help NASA consider humanity’s future in space and develop its vision for exploring the cosmos.?Watch and let me know what you think I got right and where I missed the mark. https://lnkd.in/eSytm6NP

This stunning JWST image reveals something for the first time! Meet NGC 602, a young star cluster. Its environment is similar to what scientists think the early Universe might have been like. This makes it an exciting place to study how stars form. ? And now, thanks to the James Webb Space Telescope (JWST), scientists have discovered the first-ever brown dwarf candidates outside our galaxy! Why does this matter? ?? Until now, we’ve only known about 3,000 brown dwarfs, all of them inside the Milky Way. Brown dwarfs are like the bigger siblings of gas giants (think Jupiter), but smaller than stars. They're hard to detect because they're dim (too dim to be easily made out in this image) and typically drift alone through space, far from other stars. JWST’s ability to spot such faint objects from vast distances allows us to study them in more detail than ever before. ??: ESA/Webb, NASA & CSA, P. Zeidler, E. Sabbi, A. Nota, M. Zamani

?? The NASA/ESA/CSA James Webb Space Telescope has captured a cosmic question mark! ?? ?? The galaxy cluster MACS-J0417.5-1154 is massive – so massive it’s warping space-time and distorting the appearance of galaxies behind, in a natural funhouse-mirror effect known as gravitational lensing. ?? Two distant, interacting galaxies (a face-on spiral and a dusty red galaxy seen from the side) appear multiple times in this image, tracing a familiar shape across the sky. Another just happens to be in the right space-time to form the question mark’s dot! ?? The NASA/ESA Hubble Space Telescope has also observed it, but the dusty red galaxy is much more prominent in Webb’s #NIRCam image. Read more about it here: https://ow.ly/umQ650TfkgV #WebbSeesFarther ?? NASA, ESA, CSA, STScI, V. Estrada-Carpenter (Saint Mary’s University)