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Ecco la Terra vista da Saturno

Come scrisse Carl Sagan: "Quel puntino è noi". È finalmente arrivata la foto della Terra scattata dalla sonda Cassini (vedi annuncio).<p>Al momento …

L'alba della Terra e spade di luce galattiche

<b>Il risveglio della forza</b><br>ESA/Hubble & NASA, D. Padgett (GSFC), T. Megeath (Unuversity of Toledo), e B. Reipurth (University of Hawaii)<p>HH 24, una …

A Hubble View of All That Glitters This striking NASA/ESA Hubble Space Telescope image shows a glittering bauble named Messier 92. Located in the northern constellation of Hercules, this globular cluster — a ball of stars that orbits a galactic core like a satellite — was first discovered by astronomer Johann Elert Bode in 1777. Messier 92 is one of the brightest globular clusters in the Milky Way, and is visible to the naked eye under good observing conditions. It is very tightly packed with stars, containing some 330,000 stars in total. As is characteristic of globular clusters, the predominant elements within Messier 92 are hydrogen and helium, with only traces of others. It is actually what is known as an Oosterhoff type II (OoII) globular cluster, meaning that it belongs to a group of metal-poor clusters — to astronomers, metals are all elements heavier than hydrogen and helium. By exploring the composition of globulars like Messier 92, astronomers can figure out the age of these clusters. As well as being bright, Messier 92 is also old, being one of the oldest star clusters in the Milky Way, with an age almost the same as the age of the Universe. Credit: ESA/Hubble & NASA Acknowledgement: Gilles Chapdelaine #nasagoddard #space #Hubble

12.13.14 NOAA's GOES-East satellite captured this stunning view of the Americas on 12.13.14, December 13, 2014 at 17:45 UTC. The data from GOES-East was made into an image by the NASA/NOAA GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Md. GOES satellites provide the kind of continuous monitoring necessary for intensive data analysis. Geostationary describes an orbit in which a satellite is always in the same position with respect to the rotating Earth. This allows GOES to hover continuously over one position on Earth's surface, appearing stationary. As a result, GOES provide a constant vigil for the atmospheric "triggers" for severe weather conditions such as tornadoes, flash floods, hail storms and hurricanes. Credit: NOAA/NASA GOES Project #nasagoddard #earth #earthrightnow #space #121314