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Elena Constancia Ogilvie.jpg

Space · Photo

Elena Constancia Ogilvie.jpg

Empleada del Observatorio Nacional Argentino (hoy OAC) entre 1906 y 1940, como medidora de placas y calculadora, de destacada actuación en la institución.

Wikimedia Commons · Public domain · ♥ 0

Cámaras expedición 1912.jpg

Space · Photo

Cámaras expedición 1912.jpg

Cámaras utilizada en la expedición 1912 en Cristina, Brasil por el Observatorio Nacional Argentino para realizar el primer intento confirmación de la desviación de la luz por la masa del Sol predicha por Einstein(Teoría de la Relatividad). Realizada por pedido expreso de Einstein (a través de Freundlich). No se pudo concretar por una intensa lluvia que azotó la zona. https://historiadelaastronomia.wordpress.com/documentos/primerintento/

Wikimedia Commons · Public domain · ♥ 0

Voyager Captures Sounds of Interstellar Space.webm

Space · Video

Voyager Captures Sounds of Interstellar Space.webm

NASA's Voyager 1 spacecraft captured these sounds of interstellar space. Voyager 1's plasma wave instrument detected the vibrations of dense interstellar plasma, or ionized gas, from October to November 2012 and April to May 2013. The graphic shows the frequency of the waves, which indicate the density of the plasma. Colors indicate the intensity of the waves, or how "loud" they are. Red indicates the loudest waves and blue indicates the weakest. The soundtrack reproduces the amplitude and frequency of the plasma waves as "heard" by Voyager 1. The waves detected by the instrument antennas can be simply amplified and played through a speaker. These frequencies are within the range heard by human ears. Scientists noticed that each occurrence involved a rising tone. The dashed line indicates that the rising tones follow the same slope. This means a continuously increasing density. When scientists extrapolated this line even further back in time (not shown), they deduced that Voyager 1 first encountered interstellar plasma in August 2012. The Voyager spacecraft were built and continue to be operated by NASA's Jet Propulsion Laboratory, in Pasadena, Calif. Caltech manages JPL for NASA. The Voyager missions are a part of NASA's Heliophysics System Observatory, sponsored by the Heliophysics Division of the Science Mission Directorate at NASA Headquarters in Washington. For more information about Voyager, visit: http://www.nasa.gov/voyager and http://voyager.jpl.nasa.gov . Credit: NASA/JPL-Caltech/University of Iowa

Wikimedia Commons · Public domain · ♥ 0

Journey to the Center of the Galaxy.webm

Space · Video

Journey to the Center of the Galaxy.webm

Video Credit: ESO/MPE/Nick Risinger (skysurvey.org)/VISTA/J. Emerson/Digitized Sky Survey 2 Details: http://www.eso.org/public/videos/eso1151d/ Details: https://apod.nasa.gov/apod/ap181229.html

Wikimedia Commons · CC BY 3.0 · ♥ 0