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Astronomy (General/Chat)

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  • Astronomy Picture of the Day - The Nebulous Realm of WR 134

    05/22/2026 11:15:33 AM PDT · by MtnClimber · 5 replies
    NASA ^ | 22 May, 2026 | Image Credit & Copyright: Luigi Morrone and Telescope Live
    Explanation: This cosmic snapshot covers a field of view over twice as wide as the full Moon within the boundaries of the high-flying constellation Cygnus. Made using astronomical narrowband filters, the image highlights the bright edge of a ring-like nebula traced by the glow of ionized hydrogen and oxygen gas. Embedded in the region's expanse of interstellar clouds, the complex, glowing arcs are sections of shells of material swept up by the wind from Wolf-Rayet star WR 134, the brightest star near image center. Distance estimates put WR 134 about 6,000 light-years away, making this telescopic frame over 100 light-years...
  • It's OFFICIAL! We are now too stupid and need to be saved by AI!

    05/22/2026 10:39:05 AM PDT · by Merrick · 45 replies
    Self | 22 May 2026 | Merrick
    OK - I got one yanked a while back - still not perfectly clear on what things will get something you post pulled, but I think the last one had something to do with a title not matching source title?
  • Scientists Just Measured How Fast The Universe Is Expanding. The Answer Doesn’t Add Up.

    05/21/2026 7:57:11 PM PDT · by Red Badger · 58 replies
    Study Finds ^ | Apr 13, 2026 | Stefano Casertano (Space Telescope Science Institute)
    Credit: CTIO/NOIRLab/DOE/NSF/AURA/J. Pollard Image Processing: D. de Martin & M. Zamani (NSF NOIRLab) =============================================================================== In A Nutshell A 37-member international team produced the most precise direct measurement of the Hubble constant ever recorded, with just 1.1 percent uncertainty. By linking a dozen different cosmic distance measurement methods into a single “Distance Network,” they confirmed the universe is currently expanding at about 73.5 kilometers per second per 3.26 million light-years. That rate conflicts with what the Big Bang’s ancient afterglow predicts by more than seven times the margin of error, a gap that makes a simple measurement mistake increasingly implausible. Resolving...
  • Astronomy Picture of the Day - A Collision of Galaxy Clusters

    05/21/2026 11:33:02 AM PDT · by MtnClimber · 13 replies
    NASA ^ | 21 May, 2026 | Image Credit: X-ray: NASA/CXC/CfA/C. Watson et al.; Optical: PanSTARRS; Image Processing: NASA/CXC/S
    Explanation: This big beautiful spiral shines in X-ray light. It is about 20 times larger than our Galaxy. It belongs to Abell 2029, a galaxy cluster one billion light-years away. (To see only the galaxies, hover your cursor over the image, or follow this link.) Galaxy clusters are the largest structures in the universe that are supported by gravity. Abell 2029 is formed by thousands of galaxies, surrounded by a huge cloud of hot gas and the equivalent of hundreds of trillions times the mass of the Sun in dark matter. The spiral is made of gas, mostly hydrogen and...
  • Astronomy Picture of the Day - The Dark Wolf Nebula

    05/20/2026 12:55:07 PM PDT · by MtnClimber · 10 replies
    NASA ^ | 20 May, 2026 | Image Credit & Copyright: William Vrbasso Text: Keighley Rockcliffe (NASA GSFC, UMBC CSST, CRESST II
    Explanation: A dark wolf lies in gum. No, this isn’t a riddle! Today's image features the Dark Wolf Nebula (Sandqvist–Lindroos 17), a spooky dust cloud embedded within the Gum 55 (RCW 113) Nebula in the Scorpius constellation. While dust is a pest to us, it serves a vital role in creating the necessary conditions for stars to be born. The Dark Wolf absorbs the intense ultraviolet and visible light emitted by young stars in Gum 55 and re-emits it at longer, mainly infrared, wavelengths. This prevents the higher energy light from heating up the gas in the region. When a...
  • If The Sun Suddenly Vanished, It Would Take Earth 8 Minutes And 20 Seconds Before "Feeling" Any Change

    05/19/2026 12:44:11 PM PDT · by Red Badger · 72 replies
    IFL Science ^ | May 14, 2026 | Dr. Alfredo Carpineti
    You would have time to make peace with what has happened. A fully frozen Earth... that would be the result! Image Credit: Art Knights / Shutterstock.com It is Terrifying Affair Thursday, and we are imagining a scenario that could never happen, but is wonderfully fun to explore. And in case it becomes a ridiculous conspiracy theory like Earth losing gravity for 7 seconds, at least we are ahead of the curve in debunking it. The scenario for the day is what if the Sun somehow disappears? Magically vanishes from the center of the Solar System. What would happen next? Well,...
  • Astronomy Picture of the Day - NGC 2170: The Angel Nebula

    05/19/2026 11:52:49 AM PDT · by MtnClimber · 15 replies
    NASA ^ | 19 May, 2026 | Image Credit & Copyright: Jason Marriott
    Explanation: Is this a painting or a photograph? In this celestial abstract art composed with a cosmic brush, dusty nebula NGC 2170, also known as the Angel Nebula, shines just above the image center. Reflecting the light of nearby hot stars, NGC 2170 is joined by other bluish reflection nebulae, a red emission region, many dark absorption nebulae, and a backdrop of colorful stars. Like the common household items that abstract painters often choose for their subjects, the clouds of gas, dust, and hot stars featured here are also commonly found in a setting like this one -- a massive,...
  • Can we all get a refund? Now UN climate experts admit climate change won’t destroy Earth tomorrow (only 4.68 years left)

    05/19/2026 4:20:13 AM PDT · by Libloather · 26 replies
    NY Post ^ | 5/18/26 | Post Editorial Board
    Apocalyptic climate-change predictions were box-office gold for Hollywood but they did untold damage to the public psyche, economy and the average man’s pocketbook. Now the United Nations’ influential climate change committee has quietly discarded the dire temperature-rise scenarios used in two previous reports predicting horrific consequences of global warming if greenhouse emissions weren’t curbed. For years, lefty outfits — based on dubious climate science — screamed about the coming climate catastrophe: The New York Times warned that “Climate Change Is Harming The Planet Faster Than We Can Adapt,” “Climate Change Is Speeding Toward Catastrophe” and “A Hotter Future Is Certain.”...
  • Scientists opened a sealed envelope after 10 years and gravity still didn’t make sense

    05/18/2026 9:11:26 PM PDT · by Red Badger · 18 replies
    Science Daily ^ | May 18, 2026 | National Institute of Standards and Technology (NIST)
    For more than two centuries, scientists have tried to determine one of the most important numbers in physics: the universal gravitational constant, known as "big G." It defines the strength of gravity throughout the universe, influencing everything from falling objects on Earth to the motion of galaxies. Yet despite its importance, researchers still cannot agree on its exact value. That uncertainty weighed heavily on Stephan Schlamminger, a physicist at the National Institute of Standards and Technology (NIST), as he prepared to open a sealed envelope containing a crucial secret number. For nearly 10 years, Schlamminger had devoted much of his...
  • Astronomy Picture of the Day - Unraveling NGC 3169

    05/18/2026 12:32:11 PM PDT · by MtnClimber · 9 replies
    NASA ^ | 18 May, 2026 | Image Credit & Copyright: Simone Curzi and the ShaRA Team
    Explanation: Spiral galaxy NGC 3169 looks to be unraveling like a ball of cosmic yarn. It lies some 70 million light-years away, south of bright star Regulus toward the faint constellation Sextans. Wound up spiral arms are pulled out into sweeping tidal tails as NGC 3169 (left) and neighboring NGC 3166 interact gravitationally. Eventually the galaxies will merge into one, a common fate even for bright galaxies in the local universe. Drawn out stellar arcs and plumes are clear indications of the ongoing gravitational interactions across the deep and colorful galaxy group photo. The telescopic frame spans about 20 arc...
  • Astronomy Picture of the Day - NGC 1300: Barred Spiral Galaxy

    05/17/2026 12:37:08 PM PDT · by MtnClimber · 15 replies
    NASA ^ | 17 May, 2026 | Image Credit: NASA ESA, Hubble Heritage
    Explanation: Across the center of this spiral galaxy is a bar. And at the center of this bar is smaller spiral. And at the center of that spiral is a supermassive black hole. This all happens in the big, beautiful, barred spiral galaxy cataloged as NGC 1300, a galaxy that lies some 70 million light-years away toward the constellation of the river Eridanus. This Hubble Space Telescope composite view of the gorgeous island universe is one of the most detailed Hubble images ever made of a complete galaxy. NGC 1300 spans over 100,000 light-years and the Hubble image reveals striking...
  • Scientists Spot Asteroid 2026 JH2 Flying Closer Than the Moon Tomorrow

    05/17/2026 12:29:43 PM PDT · by Red Badger · 15 replies
    Rumble Via Liberty Daily ^ | May 17, 2026 | Staff
    Don't look up!...................... VIDEO AT LINK................
  • 4 alien species have been pulled from crashed UFOs, ex-government researcher claims

    05/17/2026 5:08:03 AM PDT · by Jonty30 · 4 replies
    https://nypost.com ^ | May 16, 2026 | Shane Galvin
    The US has recovered four distinct species of extraterrestrial life from crashed UFOs, a former CIA-funded government researcher sensationally claimed this week. Dr. Hal Puthoff, former Advanced Aerospace Weapon System Applications Program advisor and CIA-funded researcher, made the claim alongside “Age of Disclosure” director Dan Farrah on Steve Bartlett’s “The Diary of a CEO” podcast on Thursday. “People who have been involved in recoveries have said there are at least four types. Four separate types,” the 89-year-old said. “Now I have not had direct access to that but I believe the people who I talked to — four separate types...
  • Astronomy Picture of the Day - Aurora Slathers Up the Sky

    05/16/2026 12:41:22 PM PDT · by MtnClimber · 12 replies
    NASA ^ | 16 May, 2026 | Image Credit: Jack Fischer, Expedition 52, NASA
    Explanation: Like salsa verde on your favorite burrito, a green aurora slathers up the sky in this 2017 June 25 snapshot from the International Space Station. About 400 kilometers (250 miles) above Earth, the orbiting station is itself within the upper realm of the auroral displays. Aurorae have the signature colors of excited molecules and atoms at the low densities found at extreme altitudes. Emission from atomic oxygen dominates this view. The tantalizing glow is green at lower altitudes, but rarer reddish bands extend above the space station's horizon. The orbital scene was captured while passing over a point south...
  • Newly discovered, blue-whale-size asteroid will fly super close to Earth Monday — and you can watch it live

    05/16/2026 6:32:10 AM PDT · by BenLurkin · 56 replies
    Live Science ^ | 05/16/2026 | Harry Baker
    A hefty, never-before-seen asteroid is racing toward Earth at around 20,000 mph (32,000 km/h) and will zoom past our planet closer than some satellites on Monday (May 18), scientists say. You can watch the unusually close encounter for yourself, even if you don't have access to stargazing equipment. The asteroid, dubbed 2026 JH2, was discovered May 10 by astronomers at the Mount Lemmon Observatory near Tucson, Arizona, who also spotted the superbright Comet Lemmon last year. The space rock, which has since been verified by other observatories across the globe, likely circles the sun every 3.7 years on an elliptical...
  • Astronomy Picture of the Day - R3 PanSTARRS: An Orion Comet

    05/15/2026 1:24:29 PM PDT · by MtnClimber · 10 replies
    NASA ^ | 15 May,2026 | Image Credit & Copyright: Chester Hall-Fernandez
    Explanation: Comet R3 PanSTARRS might be best remembered as an Orion comet. A key reason is because Comet C/2025 R3 (PanSTARRS) was near its most spectacular -- in terms of tail visibility -- when passing in front of the iconic constellation. Although rare, other bright comets, too, have ventured across Orion, including Lovejoy in 2015, Hale-Bopp in 1997, and the Great Comet of 1264. Best visible in long duration exposures, the featured image was captured last week from the Craigieburn Mountain Range in New Zealand. Visible in the deep background image are the Orion Nebula, Barnard's Loop, and through R3's...
  • NASA’s Planet-Hunting TESS Reveals a Sky Filled With Thousands of Alien Worlds

    05/14/2026 4:47:49 PM PDT · by Red Badger · 17 replies
    Daily Galaxy ^ | May 14, 2026 | Lydia Amazouz
    NASA’s TESS mission has released its most complete cosmic mosaic yet, revealing thousands of confirmed and candidate exoplanets scattered across the night sky. © Credit: NASA NASA has unveiled the most complete panoramic view yet from its Transiting Exoplanet Survey Satellite (TESS), offering a breathtaking look at a sky crowded with thousands of potential alien worlds. The newly released all-sky mosaic combines years of observations into a single image that highlights nearly 6,000 confirmed and candidate exoplanets discovered across the galaxy. Beyond its visual impact, the map represents one of the most ambitious planet-hunting efforts ever conducted and marks another...
  • Astronomy Picture of the Day - Messier Catalog at Uniform Scale

    05/14/2026 1:07:02 PM PDT · by MtnClimber · 8 replies
    NASA ^ | 14 May, 2026 | Image Credit: Sylvain Villet Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)
    Explanation: What are some of the most interesting astronomical objects you can see in the night sky? Armed with a good pair of binoculars or a small telescope, if you live in the Northern Hemisphere, you can look for the very popular objects in the Messier Catalog. Most of them, but not all, are also visible from the southern half of the Earth. The featured image shows all 110 objects in the catalog at uniform scale -- the same magnification. Charles Messier created the catalog in the 18th century. He was interested in comets, and his catalog was a list...
  • Astronomy Picture of the Day - NGC 188: Old Cluster in the New General Catalog

    05/13/2026 12:02:30 PM PDT · by MtnClimber · 9 replies
    NASA ^ | 13 May, 2026 | Image Credit & Copyright: Neven Krcmarek
    Explanation: The New General Catalog of star clusters and nebulae really isn't so new. In fact, it was published in 1888 - an effort by J. L. E. Dreyer to consolidate the work of astronomers William, Caroline, and John Herschel along with others into a useful single, complete catalog of astronomical discoveries and measurements. Dreyer's work was largely successful and is still important today, as this famous catalog continues to lend its "NGC" to bright clusters, galaxies, and nebulae. Take for example the star cluster known as NGC 188 (item number 188 in the NGC compilation). It lies about 6,000...
  • Trump’s ‘Golden Dome’ Missile Defense Plan Could Cost $1.2 Trillion

    05/13/2026 6:19:31 AM PDT · by DUMBGRUNT · 36 replies
    NYT ^ | 12 May 2026 | John Ismay
    “Golden Dome” could cost taxpayers $1.2 trillion over 20 years, according to a government report issued on Tuesday. ...Even if the system is built, the report concluded, an adversary like Russia or China that has a large arsenal of nuclear weapons could overwhelm it and some missiles would hit their targets. The budget office report found that the “space-based interceptors” the president envisions — satellites armed with missiles orbiting the planet — would consume about 60 percent of the cost.