Pesquisando por: "GENETICS, DNA" - Fotoarena - Agência de fotojornalismo

20230614_zia_c218_045 June 14, 2023, United States: This image shows: During a 2005 flyby, NASAâ??s Cassini spacecraft took high-resolution images of Enceladus that were combined into this mosaic, which shows the long fissures at the moonâ??s south pole that allow water from the subsurface ocean to escape into space...Phosphorus, the least abundant of the essential elements necessary for biological processes has been detected on Saturnâ??s moon, Enceladus. The element is a building block for DNA, which forms chromosomes and carries genetic information, and is present in the bones of mammals, cell membranes, and ocean-dwelling plankton. Phosphorus is also a fundamental part of energy-carrying molecules present in all life on Earth. Life wouldnâ??t be possible without it..â??We previously found that Enceladusâ?? ocean is rich in a variety of organic compounds,â? said Frank Postberg, a planetary scientist at Freie Universität Berlin, Germany, who led the new study, published on Wednesday, 14 June 2023, in the journal Nature. â??But now, this new result reveals the clear chemical signature of substantial amounts of phosphorus salts inside icy particles ejected into space by the small moonâ??s plume. Itâ??s the first time this essential element has been discovered in an ocean beyond Earth.â?.Previous analysis of Enceladusâ?? ice grains revealed concentrations of sodium, potassium, chlorine, and carbonate-containing compounds, and computer modeling suggested the subsurface ocean is of moderate alkalinity â?? all factors that favor habitable conditions..For this latest study, the authors accessed the data through NASAâ??s Planetary Data System, a long-term archive of digital data products returned from the agencyâ??s planetary missions. The archive is actively managed by planetary scientists to help ensure its usefulness and usability by the worldwide planetary science community..The authors focused on data col (Credit

20230614_zia_c218_044 June 14, 2023, United States: This image shows: The icy crust at the south pole of Enceladus exhibits large fissures that allow water from the subsurface ocean to spray into space as geysers, forming a plume of icy particles. NASAâ??s Cassini spacecraft, which captured this imagery in 2009, sampled those particles to reveal the chemicals contained in the ocean...Phosphorus, the least abundant of the essential elements necessary for biological processes has been detected on Saturnâ??s moon, Enceladus. The element is a building block for DNA, which forms chromosomes and carries genetic information, and is present in the bones of mammals, cell membranes, and ocean-dwelling plankton. Phosphorus is also a fundamental part of energy-carrying molecules present in all life on Earth. Life wouldnâ??t be possible without it..â??We previously found that Enceladusâ?? ocean is rich in a variety of organic compounds,â? said Frank Postberg, a planetary scientist at Freie Universität Berlin, Germany, who led the new study, published on Wednesday, 14 June 2023, in the journal Nature. â??But now, this new result reveals the clear chemical signature of substantial amounts of phosphorus salts inside icy particles ejected into space by the small moonâ??s plume. Itâ??s the first time this essential element has been discovered in an ocean beyond Earth.â?.Previous analysis of Enceladusâ?? ice grains revealed concentrations of sodium, potassium, chlorine, and carbonate-containing compounds, and computer modeling suggested the subsurface ocean is of moderate alkalinity â?? all factors that favor habitable conditions..For this latest study, the authors accessed the data through NASAâ??s Planetary Data System, a long-term archive of digital data products returned from the agencyâ??s planetary missions. The archive is actively managed by planetary scientists to help ensure its usefulness and usability by the wor (Credit Image