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| Ultimi commenti - Venus |
Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/19/22 at 19:19Paolo C. Fienga: ...Anche 2000...
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Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/17/22 at 08:07Anakin: credo che abbiamo raggiunto uno dei punti peggiori...
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Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/16/22 at 09:29Paolo C. Fienga: ...Amici, a meno che non "atterrino" gli...
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Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/12/22 at 17:40walthari: si ma che si spicciassero...
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Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/12/22 at 15:14Anakin: Minchia, Max, anzi, come diciamo noi "ma li m...
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Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/11/22 at 10:49Ufologo: .... Eggggi! :-)
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Z-Venus~1.jpgIs there Life on Venus?113 visitePotential signs of life on Venus are fading as astronomers downgrade their original claims.
"The announcement in September 2020 took the World by storm: Researchers using two radio telescopes found signs that the clouds of Venus were harboring phosphine, a toxic compound that on Earth is only made in significant quantities by microbes and chemists. The unexpectedly high levels detected on Venus could point to a floating microbial biosphere, the researchers suggested in a paper published in Nature Astronomy. But almost immediately, other astronomers began to criticize the results, with four independent studies pointing out questionable methods or failing to reproduce the results.
Now, after reanalyzing their data, the original proponents are downgrading their claims. Even the most favorable interpretation of their data now suggests phosphine levels are at least seven times lower than first reported, making it a much more tentative finding, the authors reported in a preprint posted on 17 November to arXiv. But the team still believes the gas is there, with the possibility that local pockets rise to higher levels, said Jane Greaves, an astronomer at Cardiff University who led the work, in a talk today to NASA’s Venus Exploration Analysis Group (VEXAG). “We have again a phosphine line.”
Lets hope more research and study provide the necessary data to prove one way or another!".MareKromium05/11/22 at 06:55Anakin: E dopo che hanno dimostrato che ci sono "micr...
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Venusian_Surface-Venera_13-04.jpgVenus from Venera 13 - March, 1, 1982 - color detail428 visiteAncora un'area vulcanica, dunque, dal colore giallastro.
Un probabile segnale della presenza di zolfo? Può darsi, ma può anche darsi che si tratti di un effetto di illuminazione causato dalla presenza, nei pressi della Sonda, di un'intensa sorgente luminosa di color giallo e rosso.
Come un camino vulcanico attivo, ad esempio, o un lago di lava. Entrambe le ipotesi, in difetto di elementi decisivi, sono valide ed accettabili.01/22/21 at 11:40MareKromium: Concordo al 100% Walt.
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Venusian_Surface-Venera_13-04.jpgVenus from Venera 13 - March, 1, 1982 - color detail428 visiteAncora un'area vulcanica, dunque, dal colore giallastro.
Un probabile segnale della presenza di zolfo? Può darsi, ma può anche darsi che si tratti di un effetto di illuminazione causato dalla presenza, nei pressi della Sonda, di un'intensa sorgente luminosa di color giallo e rosso.
Come un camino vulcanico attivo, ad esempio, o un lago di lava. Entrambe le ipotesi, in difetto di elementi decisivi, sono valide ed accettabili.01/21/21 at 19:38walthari: occorre che Venere venga ulteriormente studiata pe...
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Venusian_Surface-Venera_13-04.jpgVenus from Venera 13 - March, 1, 1982 - color detail428 visiteAncora un'area vulcanica, dunque, dal colore giallastro.
Un probabile segnale della presenza di zolfo? Può darsi, ma può anche darsi che si tratti di un effetto di illuminazione causato dalla presenza, nei pressi della Sonda, di un'intensa sorgente luminosa di color giallo e rosso.
Come un camino vulcanico attivo, ad esempio, o un lago di lava. Entrambe le ipotesi, in difetto di elementi decisivi, sono valide ed accettabili.01/21/21 at 18:33MareKromium: Venere, per quanto si sa e ne so, ha un Nucleo att...
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Venusian_Surface-Venera_13-04.jpgVenus from Venera 13 - March, 1, 1982 - color detail428 visiteAncora un'area vulcanica, dunque, dal colore giallastro.
Un probabile segnale della presenza di zolfo? Può darsi, ma può anche darsi che si tratti di un effetto di illuminazione causato dalla presenza, nei pressi della Sonda, di un'intensa sorgente luminosa di color giallo e rosso.
Come un camino vulcanico attivo, ad esempio, o un lago di lava. Entrambe le ipotesi, in difetto di elementi decisivi, sono valide ed accettabili.01/21/21 at 16:11walthari: basterebbe un nucleo attivo e una sorta di tettoni...
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Venusian_Surface-Venera_13-09a.jpgVenus, from Venera 13 (Natural Colors; credits: Ted Stryk)55 visiteTed Stryk comments:"...Here is a composite of Venera 13 images, looking towards a ridge on the horizon...I have watched with great excitement how the Mars Exploration Rovers have explored the Red Planet.
However, Venus, while it has had more successful landers on its Surface, was the subject of much less capable Spacecraft. There are four color image sets of the Surface, all with blank or nearly blank blue channels. Venera 13 sent back one full pan in color, which is the best set we have, and another partial one (complete in black and white) that hs much poorer color data..."
Nota Lunexit: non lo diciamo (rectius: scriviamo) certo per polemizzare con Mr Ted Stryk, nè per "esaltare" le imprese dell'Agenzia Spaziale Sovietica, ma il paragone fra le capacità dei Lander della Classe "VENERA" che raggiunsero con successo la Superficie di Venere ed i MER Spirit ed Opportunity (nonchè i Lander Viking 1, 2, Pathfinder e Phoenix) che hanno felicemente raggiunto la Superficie del Pianeta Rosso e che Ted stesso opera per giungere alla conclusione che i Venera Lander erano "...much less capable spacecraft..." non sta nè in Cielo, nè...su Marte o Venere!
Tralasciamo in questa sede il gap di evoluzione tecnica che separa le Sonde VENERA (fine Anni '70, primi Anni '80) da quelle NASA e focalizziamoci sulle condizioni della Superficie di Venere rispetto a quelle della Superficie Marziana: avete un'idea - anche vaga - della diversità di ambienti?
Temperatura media al suolo su Venere: tra i 465 ed i 485° Celsius; pressione: 92/94 Bar (e cioè oltre 9 volte la pressione terrestre al livello del mare); il tutto condito da vulcanismo attivo e frequenti piogge a base di Acido Solforico.
Come si fa, viste le summenzionate premesse, a dire che le Sonde Sovietiche erano "più scadenti"??? Insomma: di paragoni se ne possono sempre fare, certo, ma devono essere "sensati" e fondati su oggetti e situazioni congruibili, altrimenti...sono solo chiacchiere in libertà.MareKromium01/20/21 at 10:32MareKromium: Penso di si Anakin. Ma che spettacolo sarebbe!... ...
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