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Astronomy (General/Chat)

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  • Boeing Starliner launch delayed to Tuesday due to helium leak

    05/16/2024 7:01:24 AM PDT · by Salman · 34 replies
    Space Daily ^ | May 15, 2024 | Doug Cunningham
    Boeing's Starliner flight to the International Space Station was delayed again due to a helium leak. NASA, Boeing and the United Launch Alliance said in a statemen Tuesday that the launch date will now come no earlier than Tuesday at 4:43 p.m. EDT. "Starliner teams are working to resolve a small helium leak detected in the spacecraft's service module traced to a flange on a single reaction control system thruster. Helium is used in spacecraft thruster systems to allow the thrusters to fire and is not combustible or toxic," they said. Boeing's statement said that it is working with NASA...
  • Boeing Starliner launch delayed to Tuesday due to helium leak

    05/16/2024 12:40:25 PM PDT · by Red Badger · 2 replies
    Space Daily ^ | May 15, 2024 | Doug Cunningham
    Boeing's Starliner flight to the International Space Station was delayed again due to a helium leak. NASA, Boeing and the United Launch Alliance said in a statemen Tuesday that the launch date will now come no earlier than Tuesday at 4:43 p.m. EDT. "Starliner teams are working to resolve a small helium leak detected in the spacecraft's service module traced to a flange on a single reaction control system thruster. Helium is used in spacecraft thruster systems to allow the thrusters to fire and is not combustible or toxic," they said. Boeing's statement said that it is working with NASA...
  • Astronomy Picture of the Day - Aurora Georgia

    05/16/2024 11:38:39 AM PDT · by MtnClimber · 7 replies
    NASA ^ | 16 May, 2024 | Image Credit & Copyright: Wright Dobbs
    Explanation: A familiar sight from Georgia, USA, the Moon sets near the western horizon in this rural night skyscape. Captured on May 10 before local midnight, the image overexposes the Moon's bright waxing crescent at left in the frame. A long irrigation rig stretches across farmland about 15 miles north of the city of Bainbridge. Shimmering curtains of aurora shine across the starry sky, definitely an unfamiliar sight for southern Georgia nights. Last weekend, extreme geomagnetic storms triggered by the recent intense activity from solar active region AR 3664 brought epic displays of aurora, usually seen closer to the poles,...
  • Hidden in the Halo: MIT Researchers Discover the Universe’s Oldest Stars

    05/16/2024 9:53:05 AM PDT · by Red Badger · 24 replies
    Scitech Daily ^ | May 16, 2024 | JENNIFER CHU, MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    MIT astronomers discovered three of the oldest stars in the universe, and they live in our own galactic neighborhood. The stars are in the Milky Way’s “halo” — the cloud of stars that envelopes the main galactic disk — and they appear to have formed between 12 and 13 billion years ago, when the very first galaxies were taking shape. Credit: Serge Brunier; NASA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Astronomers discovered three ancient stars circling the Milky Way’s halo, formed 12-13 billion years ago. MIT researchers have discovered three of the oldest stars in the universe, and they happen to live in our own...
  • The Sun's Most Powerful Flare in Seven Years Just Erupted

    05/16/2024 7:54:47 AM PDT · by absalom01 · 21 replies
    Science Alert ^ | May 16, 2024 | MICHELLE STARR
    A solar flare measured at X8.7 on the strength scale just emerged from AR 3664, the sunspot region responsible for last weekend's solar storms that sparked vivid auroras.That's the most powerful solar flare of the current cycle, absolutely the most powerful since 2017, and comfortably within the top 20 solar flares ever measured.As AR 3664 made its way toward the edge of the Sun's disk, it wasn't just the X8.7 flare on May 14 that erupted from the solar limb. On May 15, an X3.4 flare followed suit, suggesting that the giant sunspot region is going to continue its party...
  • European Space Agency refuses to name Israeli in sensational discovery

    05/16/2024 6:11:46 AM PDT · by Eleutheria5 · 14 replies
    Ynet ^ | 13/5/24 | Elad Zeret
    Just two weeks ago, the European Space Agency announced the discovery of a new black hole, the heaviest on the Milky Way, 33 times bigger than the Sun and 2,000 light years from Earth. Tel Aviv University’s Prof. Tsevi Mazeh, who was recently awarded the Israel Prize in physics, is among those responsible for the European Gaia spacecraft’s discovery. But if you ask him how excited he was that week, in which he both learned of his Israel prize award and his research on the new black was published, he’ll swiftly answer “The Israel prize wins bigtime.” “I cried a...
  • Astronomy Picture of the Day - AR 3664 at the Sun's Edge

    05/15/2024 2:14:37 PM PDT · by MtnClimber · 9 replies
    NASA ^ | 15 May, 2024 | Image Credit & Copyright: Sebastian Voltmer
    Explanation: What did the monster active region that created the recent auroras look like when at the Sun's edge? There, AR 3664 better showed its 3D structure. Pictured, a large multi-pronged solar prominence was captured extending from chaotic sunspot region AR 3664 out into space, just one example of the particle clouds ejected from this violent solar region. The Earth could easily fit under this long-extended prominence. The featured image was captured two days ago from this constantly changing region. Yesterday, the strongest solar flare in years was expelled (not shown), a blast classified in the upper X-class. Ultraviolet light...
  • WARP DRIVE Breakthrough Could Enable Constant-Velocity Subluminal Travel, Physics Team Says

    05/15/2024 8:45:53 AM PDT · by Red Badger · 58 replies
    The Debrief ^ | May 15, 2024 | Micah Hanks
    A novel warp drive concept that can function without any need for hypothesized exotic or negative forms of energy has been unveiled in a groundbreaking new study by leading propulsion researchers. Dubbed the “Constant-Velocity Subluminal Warp Drive,” the concept, developed by physicists with the Advanced Propulsion Laboratory at the New York-based think tank Applied Physics and from the University of Alabama in Huntsville, offers a theoretical new means of propulsion for space travel that conforms to general relativity, allowing it to operate at constant subluminal speeds with no need for unphysical forms of matter outlined in past concepts. According to...
  • Astronomy Picture of the Day - The 37 Cluster

    05/14/2024 12:55:16 PM PDT · by MtnClimber · 10 replies
    NASA ^ | 14 May, 2024 | Image Credit & Copyright: Sergio Eguivar
    Explanation: For the mostly harmless denizens of planet Earth, the brighter stars of open cluster NGC 2169 seem to form a cosmic 37. Did you expect 42? From our perspective, the improbable numerical asterism appears solely by chance. It lies at an estimated distance of 3,300 light-years toward the constellation Orion. As far as galactic or open star clusters go, NGC 2169 is a small one, spanning about 7 light-years. Formed at the same time from the same cloud of dust and gas, the stars of NGC 2169 are only about 11 million years old. Such clusters are expected to...
  • Report signals concern for Artemis space missions [3:04]

    05/13/2024 8:40:03 PM PDT · by SunkenCiv · 12 replies
    YouTube ^ | May 10, 2024 | WKMG News 6 ClickOrlando
    Report signals concern for Artemis space missions | 3:04WKMG News 6 ClickOrlando | 436K subscribers | 7,082 views | May 10, 2024
  • James Webb Space Telescope Data Reveals New Insights Into the Brightest GAMMA RAY BURST EVER DETECTED

    05/13/2024 8:00:00 AM PDT · by Red Badger · 8 replies
    The Debrief ^ | May 13, 2024 | Micah Hanks
    X-ray image of GRB221009A (Credit: NASA/Swift) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Observations by the James Webb Space Telescope are offering new clues about the nature of a massive supernova associated with GRB 221009A, the brightest gamma-ray burst astronomers have ever recorded. The new research confirms the presence of a supernova linked to this highly energetic source of gamma rays and reveals its comparatively low production of radioactive nickel, findings that challenge our currently accepted models involving these powerful events. Astronomers hope the new findings made possible by NASA’s premier space science observatory will also help to offer unique new views into the processes that...
  • Astronomy Picture of the Day - Red Aurora over Poland

    05/12/2024 11:56:28 AM PDT · by MtnClimber · 13 replies
    NASA ^ | 12 May, 2024 | Image Credit & Copyright: Mariusz Durlej
    Explanation: Northern lights don't usually reach this far south. Magnetic chaos in the Sun's huge Active Region 3664, however, produced a surface explosion that sent a burst of electrons, protons, and more massive, charged nuclei into the Solar System. A few days later, that coronal mass ejection (CME) impacted the Earth and triggered auroras that are being reported unusually far from our planet's north and south poles. The free sky show might not be over -- the sunspot rich AR3664 has ejected even more CMEs that might also impact the Earth tonight or tomorrow. That active region is now near...
  • Astronomy Picture of the Day - AR 3664: Giant Sunspot Group

    05/11/2024 1:03:20 PM PDT · by MtnClimber · 12 replies
    NASA ^ | 11 May, 2024 | Image Credit & Copyright: Franco Fantasia & Guiseppe Conzo (Gruppo Astrofili Palidoro)
    Explanation: Right now, one of the largest sunspot groups in recent history is crossing the Sun. Active Region 3664 is not only big -- it's violent, throwing off clouds of particles into the Solar System. Some of these CMEs are already impacting the Earth, and others might follow. At the extreme, these solar storms could cause some Earth-orbiting satellites to malfunction, the Earth's atmosphere to slightly distort, and electrical power grids to surge. When impacting Earth's upper atmosphere, these particles can produce beautiful auroras, with some auroras already being reported unusually far south. Pictured here, AR3664 and its dark sunspots...
  • Astronomy Picture of the Day - Simulation: Two Black Holes Merge

    05/10/2024 12:03:39 PM PDT · by MtnClimber · 7 replies
    NASA ^ | 10 May, 2024 | Simulation Credit: Simulating eXtreme Spacetimes Project
    Explanation: Relax and watch two black holes merge. Inspired by the first direct detection of gravitational waves in 2015, this simulation plays in slow motion but would take about one third of a second if run in real time. Set on a cosmic stage, the black holes are posed in front of stars, gas, and dust. Their extreme gravity lenses the light from behind them into Einstein rings as they spiral closer and finally merge into one. The otherwise invisible gravitational waves generated as the massive objects rapidly coalesce cause the visible image to ripple and slosh both inside and...
  • Astronomy Picture of the Day - The Galaxy, the Jet, and a Famous Black Hole

    05/09/2024 12:11:39 PM PDT · by MtnClimber · 8 replies
    NASA ^ | 9 May, 2024 | Image Credit: NASA, JPL-Caltech, Event Horizon Telescope Collaboration
    Explanation: Bright elliptical galaxy Messier 87 (M87) is home to the supermassive black hole captured in 2017 by planet Earth's Event Horizon Telescope in the first ever image of a black hole. Giant of the Virgo galaxy cluster about 55 million light-years away, M87 is rendered in blue hues in this infrared image from the Spitzer Space telescope. Though M87 appears mostly featureless and cloud-like, the Spitzer image does record details of relativistic jets blasting from the galaxy's central region. Shown in the inset at top right, the jets themselves span thousands of light-years. The brighter jet seen on the...
  • Astronomy Picture of the Day - Visualization: A Black Hole Accretion Disk

    05/08/2024 12:45:52 PM PDT · by MtnClimber · 7 replies
    NASA ^ | 8 May, 2024 | Visualization Credit: NASA’s Goddard Space Flight Center, Jeremy Schnittman
    Explanation: What would it look like to circle a black hole? If the black hole was surrounded by a swirling disk of glowing and accreting gas, then the great gravity of the black hole would deflect light emitted by the disk to make it look very unusual. The featured animated video gives a visualization. The video starts with you, the observer, looking toward the black hole from just above the plane of the accretion disk. Surrounding the central black hole is a thin circular image of the orbiting disk that marks the position of the photon sphere -- inside of...
  • Astronomy Picture of the Day - Black Hole Accreting with Jet (illustration)

    05/07/2024 12:22:44 PM PDT · by MtnClimber · 28 replies
    NASA ^ | 7 May, 2024 | Illustration Credit: NASA, Swift, Aurore Simonnet (Sonoma State U.)
    Explanation: What happens when a black hole devours a star? Many details remain unknown, but observations are providing new clues. In 2014, a powerful explosion was recorded by the ground-based robotic telescopes of the All Sky Automated Survey for SuperNovae (Project ASAS-SN), with followed-up observations by instruments including NASA's Earth-orbiting Swift satellite. Computer modeling of these emissions fit a star being ripped apart by a distant supermassive black hole. The results of such a collision are portrayed in the featured artistic illustration. The black hole itself is a depicted as a tiny black dot in the center. As matter falls...
  • NASA's Stunning New Simulation Sends You Diving Into a Black Hole

    05/07/2024 9:20:23 AM PDT · by Red Badger · 32 replies
    Science Alert ^ | May 7, 2024 | MICHELLE STARR
    (NASA Goddard) It's a question that has dogged humanity since we first learned about black holes a little over a century ago: What the heck would it be like to plunge beyond the point of no return? We still don't have an answer, but a new supercomputer simulation is the best guess we have, based on current data. "People often ask about this, and simulating these difficult-to-imagine processes helps me connect the mathematics of relativity to actual consequences in the real Universe," says astrophysicist Jeremy Schnittman of NASA's Goddard Space Flight Center. "So I simulated two different scenarios, one where...
  • 4.5 X Class

    05/06/2024 10:59:26 AM PDT · by Orlando · 10 replies
    Youtube ^ | 5-6-24 | Orlando
    "This was a powerful blast - More info to come on what sort of impact we should expect here on earth! This marks the 4th X-flare since May 3rd (X1.6, X1.2, X1.2, X4.5), making AR3663 the most active sunspot of Solar Cycle 25 so far."
  • Scientists discover remains of a 'buried planet' deep inside EARTH

    05/07/2024 6:21:35 AM PDT · by Red Badger · 67 replies
    Daily Mail UK ^ | May 6, 2024 | MATTHEW PHELAN - SENIOR SCIENCE REPO
    A new study of metal ore deep inside the moon is offering fresh evidence that Earth's natural satellite was formed by an ancient planet crashing into Earth long ago. This long-theorized interplanetary collision — which scientists believe occurred some 4.5 billion years ago — saw a Mars-sized planet named 'Theia' slice itself into hot lava fragments upon impact with the Earth. While some of Theia's planetary remains appear to be buried as dense and massive 'blobs' deep underneath Africa and the Pacific Ocean's tectonic plates, scientists said evidence for where the rest of Theia went after this crash had remained...