Black Hole

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The “Exposed Cranium” Nebula (officially designated PMR 1) has been unveiled in breathtaking, mind-bending detail by NASA's James Webb Space Telescope, thanks to its powerful NIRCam (Near-Infrared Camera) and MIRI (Mid-Infrared Instrument).This eerie planetary nebula, located about 5,000 light-years away in the constellation Vela, looks uncannily like a glowing brain nestled inside a translucent skull—complete with a dramatic dark central lane splitting it into two hemispheres, mimicking the brain's longitudinal fissure.The nebula forms as a dying star reaches the end of its life cycle. Having exhausted its nuclear fuel, the aging star violently sheds its outer layers, hurling expanding shells of gas and dust into space. Intense ultraviolet radiation from the exposed, scorching-hot stellar core lights up these ejected materials, causing them to fluoresce in vivid colors and intricate patterns.Webb's infrared vision pierces through the cosmic veil, revealing layered structures: a ghostly outer bubble (mostly hydrogen from the initial ejection) forms the "skull," while denser, more complex inner clouds—rich in heavier elements—create the textured "brain" appearance. The mysterious dark channel may result from powerful jets blasting material outward from the central star.First glimpsed over a decade ago by the Spitzer Space Telescope, this little-studied object now bursts with unprecedented clarity in Webb's images, showcasing the beautiful yet fleeting final act of a star like our Sun (though this one may be more massive, with an uncertain fate: white dwarf or supernova?).A truly cosmic case of nature imitating anatomy—proof that the universe has a wicked sense of humor.

Ethereal Beauty: HDW 3 - A huge , timeworn planetary nebula whose intricate, braided shape arises from its passage through interstellar gas. Credit: T.A. Rector (University of Alaska Anchorage) / H. Schweiker (WIYN and NOIRLab/NSF/AURA)

The Ring Nebula (Messier 57) lies about 2,300 light-years away in the constellation Lyra. It formed when a star similar in mass to the Sun reached the final stage of its life and shed its outer atmosphere into space. As the central star collapsed into a white dwarf, intense ultraviolet radiation illuminated the expanding shell of gas. This glowing gas forms the nebula’s distinctive ring-like appearance when viewed from Earth. The nebula is actually a three-dimensional cloud of expanding gas, but from our viewing angle it appears as a bright ring surrounding the hot central star. The colorful glow comes from ionized elements such as oxygen, hydrogen, and nitrogen. Planetary nebulae like the Ring Nebula show what may eventually happen to stars similar to our Sun billions of years in the future. Sources Hubble Space Telescope Ring Nebula Imaging Program (NASA/ESA), James Webb Space Telescope Ring Nebula Observations 2023, Space Telescope Science Institute Planetary Nebula ...

Mars from Hope Mars Mission | A view of Mars made from images captured with the EXI camera aboard the UAE's | Hope Mars Mission orbiter on November 22, 2021 from a distance of 20,118 km. Credit: UAE, Hope mission.

The amazing view of dusty spiral galaxy "NGC1566" .!

The SpaceX Falcon 9 rocket lifts off from Cape Canaveral in Florida carrying four Crew-12 members to the International Space Station. NASA astronauts Jessica Meir and Jack Hathaway, ESA (European Space Agency) astronaut Sophie Adenot, and Roscosmos Andrey Fedyaev are scheduled to dock to the orbital outpost at 3:15 p.m. EST on Saturday Feb. 14 to begin a long-duration space research mission.

The galaxy NGC 2841 has a relatively low star formation rate compared to other spirals. It was one of several nearby galaxies chosen for a study into star formation one of the most important processes in shaping the Universe. This image shows lots of hot young stars in the disc of NGC 2841, but there are just a few sites of current star formation where hydrogen gas is collapsing into new stars. It is likely that these fiery youngsters destroyed the star-forming regions in which they were formed. Credit: Hubble Space Telescope.

The well-lit nighttime cityscape of India pictured from the International Space Station as it soared over the Arabian Sea and across the Himalayas...

The Hubble Space Telescope has given us a stunning close-up of the Small Magellanic Cloud—a neighboring dwarf galaxy roughly 200,000 light-years away.Using its Wide Field Camera 3, astronomers captured this vibrant scene through four specialized filters, each tuned to specific wavelengths of light. The result? A breathtaking, multicolored tapestry where wispy dust clouds glide dramatically across a dazzling sea of stars.The striking red glows come from massive supergiant stars and glowing emission nebulae, where intense stellar radiation lights up the surrounding gas.This zoomed-in view reveals intricate details invisible to the naked eye, showcasing the dynamic beauty of one of the Milky Way's closest galactic companions.Credit: NASA’s Hubble Space Telescope (ESA/Hubble & NASA, C. Murray)Here are some representative images of Hubble views of the Small Magellanic Cloud and similar regions, featuring colorful dust lanes and starry fields:

NASA has spotlighted a truly bizarre world: GJ 367 b (also known as Tahay), an ultra-dense exoplanet that stands out as one of the most iron-rich planets ever discovered.This sub-Earth-sized world orbits a dim red dwarf star just 31 light-years away in the constellation Vela—practically next door in galactic terms.Discovered in 2021 by NASA's Transiting Exoplanet Survey Satellite (TESS), GJ 367 b whips around its star in an astonishing 7.7 hours (about 0.32 days), making it one of the shortest-period planets known.What sets it apart? Its extreme density.Refined measurements show:Radius ≈ 0.70 × Earth's (roughly Mars-sized) Mass ≈ 0.63 × Earth's Bulk density ≈ 10.2 g/cm³ — roughly twice Earth's density and very close to pure iron (~7.87 g/cm³, but models account for compression and composition) Interior models suggest the planet is dominated by an iron-nickel core making up ~86–91% of its mass (or radius fraction), with only a thin silicate mantle remaining—if any.This makes GJ 367 b a prime candidate for an "exposed planetary core" or "super-Mercury": likely the stripped-down metallic heart of a once-larger planet whose outer rocky layers were blasted away by intense stellar radiation from its close orbit, or removed through giant impacts.Surface temperatures soar to ~1,500–1,700 K on the dayside—hot enough to potentially melt iron—leaving no atmosphere and a barren, blazing landscape.Two additional low-mass sibling planets were later found in the system (at ~11.5 and 34-day orbits), but GJ 367 b remains the standout oddity.This extreme world offers a rare window into how planets can evolve—or be destroyed—when born too close to their stars.Here are some artistic impressions of GJ 367 b, showing its scorching, iron-dominated surface orbiting ... For comparison, here's Mercury—our solar system's closest analog with its massive iron core: Credit: NASA / TESS, various research teams (Lam et al. 2021, Goffo et al. 2023), and artist concepts from scientific visualizations.

Retour réussi après une mission intense ! Après 7 heures et 2 minutes dans le vide spatial, Jessica Meir (@Astro_Jessica) et Chris Williams (@Astro_ChrisW) sont de retour à bord de la station ! Une sortie extravéhiculaire parfaitement menée, marquée par un travail impressionnant dans l’espace. Une belle démonstration de travail d’équipe...

This stunning view of the Cat's Paw Nebula (NGC 6334) spans about 91 light-years across — a ferocious stellar nursery clawing its way through space! This fresh multiwavelength masterpiece combines X-ray data from NASA's Chandra X-ray Observatory (highlighting hot, high-energy spots like young stars and outflows in pink/purple) with deep infrared imaging from the James Webb Space Telescope (revealing warm dust, hidden star-forming regions, and glowing gas in rich reds and oranges).The result? A "paws-itively" explosive glimpse into one of the Milky Way's most active star-birth factories, located roughly 4,000 light-years away in the constellation Scorpius. Massive young stars are blasting away at surrounding gas and dust, sculpting cosmic caverns, igniting new generations of stars, and lighting up the nebula like a fireworks show in infrared.It's telescope teamwork at its finest: Chandra spots the energetic action, while JWST peers through the dust to uncover the hidden drama. Pure cosmic catnip! (Image credit: NASA/CXC & NASA/ESA/CSA/STScI; Chandra X-ray data in pink overlaid on JWST

2001: A Space Odyssey (1968) Director: Stanley Kubrick By retro rockets

Messier 58 … Fresh off Hubble's stunning new multi-wavelength portrait for the 2026 Messier Marathon, let's flip the script and revisit this barred spiral beauty through the eyes of NASA's retired Spitzer Space Telescope — back in 2006!In this classic infrared glow-up (from the Spitzer Infrared Nearby Galaxy Survey, or SINGS legacy project), Spitzer pierces the dust that visible light struggles with. The reddish-orange hues highlight warm dust lanes — the hidden nurseries where new stars are actively forming. Meanwhile, the cooler blue tones trace the light from older, more mature stellar populations lighting up the galactic disk and arms.It's telescope teamwork at its finest: Hubble reveals the sharp details of star clusters, gas clouds, and that dramatic central bar in visible + UV + IR light, while Spitzer's infrared view unmasks the dusty "star factories" Hubble can only hint at. Together, they paint a fuller, more dynamic picture of how M58 — this 62-million-light-year distant Virgo Cluster resident — is still evolving, birthing stars, and interacting with its crowded cosmic neighborhood.Multwavelength magic turns one galaxy into a whole story! (Image credits: Spitzer infrared view courtesy of NASA/JPL-Caltech via SINGS Legacy Project; Hubble 2026 image: NASA, ESA, D. Thilker (Johns Hopkins University); Processing: Gladys Kober (NASA/Catholic University of America)

This annual stargazing event encourages astronomers to target cosmic objects from the Messier catalog, compiled by French astronomer Charles Messier in the 1700s. M10 is a globular cluster, which is a roughly spherical grouping of stars held together by their mutual gravity. Image credit: NASA, ESA, G. Piotto (Universita degli Studi di Padova); Image Processing: Gladys Kober (NASA/Catholic University of America)

Messier 58 (M58) — one of the very first galaxies ever recognized as a stunning spiral back in 1779 by French comet-hunter Charles Messier himself!This barred spiral beauty sits in the crowded Virgo Cluster, a whopping 62 million light-years away — making it the farthest object in Messier's famous catalog. (Talk about reaching the edge of his 18th-century list!)Hubble's brand-new view combines infrared, visible, and ultraviolet light to peel back the layers: glowing pink and blue star-forming nurseries burst to life in the arms, while lanes of dark dust wind dramatically through the structure. That central bar and ultra-compact nuclear ring? Hotbeds of intense star birth, powered by a supermassive black hole clocking in at ~70 million solar masses. Yet the outer arms look surprisingly quiet — low on hydrogen, possibly thanks to gravitational tugs from neighboring galaxies stripping away fuel.It's a perfect snapshot of a galaxy in transition: majestic spirals still churning out stars, but showing signs of cosmic evolution in the Virgo crowd.Welcome to Hubble's Messier Marathon: 2026 Edition! From March 14–21, we're dropping fresh Hubble portraits of these classic deep-sky gems — no telescope required, just pure awe from orbit. (Image credit: NASA, ESA, D. Thilker (The Johns Hopkins University); Image Processing: Gladys Kober (NASA/Catholic University of America))

Einstein at a luncheon at the Hotel Ambassador, circa 1935.

The statement that "The James Webb Space Telescope confirms that there is something seriously wrong with our understanding of the universe, and reveals that there is an unknown physics" is a dramatic but reasonably accurate summary of ongoing scientific debates sparked by JWST data—particularly around the Hubble tension (also called the Hubble crisis).This refers to a persistent mismatch in measurements of the universe's current expansion rate (the Hubble constant):Observations of the nearby universe (using "standard candles" like Type Ia supernovae and Cepheid variable stars) via telescopes like Hubble and now confirmed by JWST yield a higher value: roughly 73 km/s/Mpc. Predictions from the early universe (via the cosmic microwave background and the standard ΛCDM model of cosmology) give a lower value: around 68 km/s/Mpc. JWST's key role? Multiple independent studies (including major ones in 2023–2025, with the largest JWST survey of expansion published in late 2024) have cross-checked Hubble's local measurements and ruled out significant observational errors or instrument biases. As Nobel laureate Adam Riess (lead on several of these) has stated: with errors minimized and two flagship telescopes agreeing, the discrepancy points to something missing or incorrect in our current physics models—potentially new physics like evolving dark energy, early dark energy, modified gravity, exotic dark matter behaviors, or unknown early-universe components.This isn't a total breakdown of cosmology (the standard model still explains vast swaths of data brilliantly), but it's a serious crack: the tension has grown to high statistical significance (some reports push toward 5-sigma in recent analyses), forcing physicists to consider revisions. Other JWST surprises—like unexpectedly massive/bright early galaxies, chaotic young galaxies, or odd compact objects—have added fuel, though many of those initial "galaxy crises" have since been refined or explained within models (e.g., via better mass estimates or dust effects).In short: JWST hasn't "broken" physics outright, but it has confirmed a real puzzle that strongly suggests our understanding is incomplete, and unknown physics is likely at play to reconcile the expansion mismatch.It's one of the most exciting (and frustrating) times in cosmology—science at its best when reality refuses to fit the textbook!

April 1972. Ever wonder why Apollo astronauts moved like tipsy penguins across the lunar surface? Blame the spacesuit: pressurized to just 3.7 psi of pure oxygen — stiff as a balloon animal on steroids. Bending knees? Forget about normal strides. The rigid joints forced a short, stiff-legged waddle to keep balance in 1/6th gravity. John Young and Charlie Duke (Apollo 16) nicknamed it the "Moon shuffle." NASA called it "adaptive locomotion." We just call it comedy gold. 238,900 miles from home... and they're out here doing the penguin strut like it's no big deal. Absolute legends.

Prepare to have your mind blown by one of the James Webb Space Telescope's most eerily captivating images yet: the Exposed Cranium Nebula (officially PMR 1)! This cosmic wonder, a planetary nebula formed in the death throes of a massive star, looks shockingly like a glowing brain nestled inside a translucent skull. Located about 5,000 light-years away in the constellation Vela, it spans roughly 3.2 light-years—about the size of our entire Solar System out to the Oort Cloud. Billowing clouds of gas and dust create those uncanny, brain-like folds and filaments, split by a striking dark central lane (think cerebral hemispheres). This shadowy divide likely comes from powerful outflows or jets blasting material from the dying star at its core—ejecting the more complex inner gases while the outer "skull" shell glows with simpler hydrogen. By piercing through the dust in infrared light, JWST delivers an unprecedented, mind-bending view of this fleeting, violent stage of stellar evolution—where a star sheds its layers and recycles rich material back into the cosmos for future generations of stars and planets. Truly galaxy-brain stuff! Credit: NASA, ESA, CSA, STScI Image Processing: Joseph DePasquale (STScI)