| Piú votate - The Universe Inside |
Lonelyness.jpgRiver of Oblivion (by Roberto Tremolada)135 visite"...Omnia fert Aetas: animum quoque..."
(Virgilio)
"...Il Tempo porta via ogni cosa, inclusa la Memoria..." (trad. libera)MareKromium
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Peace.jpgPeaceful Kingdom... (by Roberto Tremolada)72 visitenessun commentoMareKromium
(13 voti)
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The-Red-Moon.jpgEclipsed Moonlight (by Jerry Lodriguss)75 visiteCaption NASA:"Moon watchers blessed with clear skies over the Americas, Europe, Africa and Western Asia enjoyed a total lunar eclipse.
Catching eclipsed moonlight, astroimager Jerry Lodriguss offers this view of the inspiring celestial event with the shadowed Moon accompanied by wandering planet Saturn at the left, and bright Regulus, alpha star of the constellation Leo, above.
The engaging composite picture was made by combining a filtered, telephoto image of the Moon and surrounding starfield with a telescopic exposure. The combination dramatizes the reddened moonlight while clearly showing the variation of brightness and color in Earth's not-so-dark shadow across the lunar surface".MareKromium
(13 voti)
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CometHolmes-UZ~0.gifForest and Sky84 visitenessun commentoMareKromium
(13 voti)
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CosmicRays.jpgCosmic Rays85 visiteWhere do Cosmic Rays come from? A major step toward answering this century old question may have just come in from the Auger Observatory Project, the world's premier Cosmic Ray Observatory. That high energy fundamental particles are barreling through the Universe has been known for about a century.
Because ultra high energy cosmic rays are so rare and because their extrapolated directions are so imprecise, no progenitor objects have ever been unambiguously implied. New results from Auger, however, indicate that 12 of 15 ultra high energy cosmic rays have sky directions statistically consistent with the positions of nearby active galactic nuclei. These galactic centers are already known to emit great amounts of light and are likely powered by large Black Holes. The Auger results also indicate that the highest energy cosmic rays are protons, since the electric charge of higher energy nuclei would force the Milky Way Galaxy's magnetic field to deflect and effectively erase progenitor source direction. MareKromium
(13 voti)
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PIA09956.jpgCosmic "Merger"75 visiteThis artist's concept shows what the night sky might look like from a hypothetical planet around a star tossed out of an ongoing four-way collision between big galaxies (yellow blobs). NASA's SST spotted this "quadruple merger" of galaxies within a larger cluster of galaxies located nearly 5 BLY away.
Though the galaxies appear intact, gravitational disturbances have caused them to stretch and twist, flinging billions of stars into space -- nearly three times as many stars as are in our Milky Way galaxy. The tossed stars are visible in the large plume emanating from the central, largest galaxy. If any of these stars have planets, their night skies would be filled with the monstrous merger, along with other galaxies in the cluster (smaller, bluish blobs).
This cosmic smash-up is the largest known merger between galaxies of a similar size. While three of the galaxies are about the size of our Milky Way galaxy, the fourth (center of image) is three times as big.
All four of the galaxies, as well as most other galaxies in the huge cluster, are blob-shaped ellipticals instead of spirals like the Milky Way.
Ultimately, in about one hundred million years or so, the four galaxies will unite into one. About half of the stars kicked out during the merger will fall back and join the new galaxy, making it one of the biggest galaxies in the universe.MareKromium
(13 voti)
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Moon_Planets.jpgPlanets...74 visitenessun commentoMareKromium
(13 voti)
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Eternity.jpgBeyond...74 visite"...A well-written Life is almost as rare as a well-spent one..."
Thomas Carlyle (1795 - 1881) - "Critical and Miscellaneous Essays" (1838) MareKromium
(13 voti)
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Rising_Moon.jpgRising Moon84 visiteCaption NASA:"What's happening to the Moon? Drifting around the Earth in 2006 July, astronauts from the International Space Station (ISS) captured a crescent Moon floating far beyond the horizon. The captured above image is interesting because part of the Moon appears blue, and because part of the moon appears missing.
Both effects are created by the Earth's atmosphere. Air molecules more efficiently scatter increasingly blue light, making the clear day sky blue for ground observers, and the horizon blue for astronauts.
Besides reflecting sunlight, these atmospheric molecules also deflect moonlight, making the lower part of the Moon appear to fade away. As one looks higher in the photograph, the increasingly thin atmosphere appears to fade to black".
(13 voti)
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Morning.jpgThe Pink-fingered Dawn...83 visiteMareKromium
(13 voti)
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Starfield.jpgStarfield...71 visitenessun commento
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