• Banno
    The star:
    The model:

    WR 140.
  • jorndoe
    Just in time for Halloween:

    The high-resolution image is quite something:

    Pillars of Creation (MIRI Image)
  • ssu
    Seems that James Webb telescope is in heavy use, new interesting images:

    Scientists are looking at light from the universe’s first and oldest star clusters in a new deep field image sent by the James Webb Space Telescope.

    Deep field images are captured when powerful telescopes like Webb and the Hubble Space Telescope point their lenses toward dark spots in space between visible stars and leave the lenses open long enough to capture images.

    These latest images show galaxies from the farthest parts of the universe including one 9 billion light-years away, reports say. Each one of them holds millions of stars.
  • Agent Smith
    Mighty intersting ... the light from these stars, I simply can't believe, are from billions and billions of light years away!
  • javi2541997
    the light from these stars, I simply can't believe, are from billions and billions of light years away!Agent Smith

    :sparkle: Beautiful how they show their brightness to us. Isn't it? :sparkle:
  • Agent Smith
    Beautiful how they show their brightness to us. Isn't it? :sparkle:javi2541997

    Yep! The birghtness, it's compelling, for some reason.
  • magritte
    In other news, A surprisingly near black hole about 10 times more massive than our Sun has been found just 1,560 light-years from Earth, which is about as far as the Orion Nebula. Gaia BH1, is part of a binary star system whose other member is a Sun-sized star about as far from its companion black hole as Mars is from the Sun.
  • 180 Proof
    The Carl Sagan Observatory 2034?

  • Changeling
    What's been going on with JWST recently?
  • Wayfarer
    What's been going on with JWST recently?Changeling

    James Webb Telescope question costs Google $100 billion

    Google's hyped artificial intelligence (AI) chatbot, Bard, just attributed one discovery to Webb that was completely false. In a livestreamed event, blog post(opens in new tab) and tweet(opens in new tab) showing the test AI in a demo Tuesday, the chatbot was asked, "What new discoveries from the James Webb Space Telescope can I tell my nine-year-old about?"

    The query came back with two correct responses about "green pea" galaxies and 13-billion-year-old galaxies, but it also included one whopping error: that Webb took the very first pictures of exoplanets, or planets outside the solar system. The timing of that mistake was off by about two decades. ...

    The embarrassing error for Google caused the search giant's parent company, Alphabet Inc., to lose $100 billion in market value Wednesday, according to Reuters


    A COSMIC RAY struck the James Webb Space Telescope (JWST) and frazzled one of its instruments, according to NASA and the Canadian Space Agency (CSA).

    ...The Near Infrared Imager and Slitless Spectrograph (NIRISS), experienced a puzzling anomaly on January 15, when it suffered a communications delay within the instrument. This then caused NIRISS’ flight software to time out. After a thorough review, a reboot, and a test observation, teams from both space agencies are breathing a sigh of relief.
    JWST Instrument Shut Down by Radiation
  • jorndoe
    Cleaning pays:

    JWST is better than anyone expected — here’s why
    — Ethan Siegel · Big Think · Jan 23, 2023
  • magritte
    It's Hard to be Green
    A green pea galaxy imaged by the Sloan Digital Sky Survey is shown alongside an infrared picture of an early pea [04590] captured by NASA’s James Webb Space Telescope. [...] Compensating for the cluster’s gravitational lensing effect and the galaxy’s greater distance to us, 04590 is even more compact, comparable to the smallest nearby green peas.NASA

    Green pea galaxies are small green and round.
    But can our Milky Way be green?
  • magritte
    In other news, newly discovered asteroid 2023DW is on a collision course with Earth due to arrive on Feb 14, 2046.
    It is about 50 meters across, roughly similar to the Tunguska (1908) and the Barringer Meteor Crater impactors.

    However, people young enough to experience this in 2046 should not build up their expectations. NASA or some other agency will likely succeed in displacing the asteroid's orbit enough to delay or eliminate this event.
  • Christoffer
    Making my own development of the JWST raw Nircam data is a blast.

  • Wayfarer
    JWT spots dust storm on exoplanet.

    Researchers observing with NASA’s James Webb Space Telescope have pinpointed silicate cloud features in a distant planet’s atmosphere. The atmosphere is constantly rising, mixing, and moving during its 22-hour day, bringing hotter material up and pushing colder material down. The resulting brightness changes are so dramatic that it is the most variable planetary-mass object known to date. The team, led by Brittany Miles of the University of Arizona, also made extraordinarily clear detections of water, methane and carbon monoxide with Webb’s data, and found evidence of carbon dioxide. This is the largest number of molecules ever identified all at once on a planet outside our solar system.


    And another interesting astronomy story although not connected to JWT

    Organic molecules have been detected in samples collected by Japan's Hayabusa2 mission from the near-Earth asteroid Ryugu.


    As a longtime fan of the Panspermia thesis, can’t help but be interested.
  • ssu
    JWT spots dust storm on exoplanet.Wayfarer
    And just how few years ago exoplanets were a hypothesis? I guess some 30 years ago, but I'm not sure just when it was generally accepted that we had proof. Now we have evidence of dust strorm on exoplanets.
  • Wayfarer
    Since Hubble and now JWT, there are plenty of exoplanets whose existence can be inferred from the data. But they're all so distant that their existence has no real significance, other than as scientific data.
  • ssu
    But they're all so distant that their existence has no real significance, other than as scientific data.Wayfarer
    And earlier have had to be really big ones very close to a star or then have been in the perfect angle towards us (going in front of the star).
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