Avanzados materiales textiles podrían ser la clave para hacer las misiones humanas a Marte una realidad. Los exploradores humanos en Marte podrían jugar un rol importante en la búsqueda de signos de vida pasada o presente en el Planeta Rojo.
¿Qué haría falta para hacer realidad una misión tripulada a Marte? Un equipo de estudiantes de Ingeniería aeroespacial y textil de la Universidad de Carolina del Norte cree que parte de la solución pudiera estar en avanzados materiales textiles. Los estudiantes unieron fuerzas para hacer frente a los desafíos contra los que la industria aeroespacial ha venido luchando por décadas.
Phytoplankton are the foundation of the oceanic food chain.
Phytoplankton are photosynthesizing microscopic organisms that inhabit the upper sunlit layer of almost all oceans and bodies of fresh water. They are agents for “primary production,” the creation of organic compounds from carbon dioxide dissolved in the water, a process that sustains the aquatic food web.
Phytoplankton account for half of all photosynthetic activity on Earth. Thus phytoplankton are responsible for much of the oxygen present in the Earth’s atmosphere – half of the total amount produced by all plant life.
Apollo 17 Mission (1972)
In this historical photo from the U.S. space agency, Cosmonaut Aleksey A. Leonov (left) and astronaut Thomas P. Stafford take part in Apollo-Soyuz Test Project (ASTP) joint crew training at the Cosmonaut Training Center (Star City) near Moscow. They are inside a Soviet Soyuz orbital module trainer on April 25, 1975.
The two men were the commanders of their respective ASTP prime crews. ASTP was a cooperative space mission between the United States and the USSR. The goals of ASTP were to test the ability of American and Soviet spacecraft to rendezvous and dock in space and to open the doors to possible international rescue missions and future collaboration on manned spaceflights.
The Soyuz and Apollo crafts launched from Baikonur and the Kennedy Space Center respectively, on July 15, 1975. The two spacecraft successfully completed the rendezvous and docking on July 17th. While the Soyuz craft returned to Earth on July 21st, the Apollo craft stayed in space another 3 days, landing on July 24th in the Pacific Ocean. ASTP was a success, as not only did crews accomplish the rendezvous and docking, but they also performed in-flight intervehicular crew transfers and various scientific experiments.
ASTP proved to be significant step toward improving international cooperation in space during the Cold War.
STS-49 INTELSAT VI-R WETF exercise with astronauts Musgrave, Clifford, Voss by NASA on The Commons on Flickr.
Historical accounts from the largest electromagnetic storm ever recorded
It was September 1, 1859, and boy were people confused. The global telegraph system failed, telegraph paper spontaneously lit on fire, and the sky was filled with brilliant colors and patterns. The New York Times described it thusly: “alternating great pillars, rolling cumuli shooting streamers, curdled and wisped and fleecy waves—rapidly changing its hue from red to orange, orange to yellow, and yellow to white, and back in the same order to brilliant red.”
In the months shortly after the incident, newspapers and scientific journals found other possible causes. Scientific American postulated falling debris from active volcanoes, the San Francisco Heraldtheorized about “nebulous matter” from “planetary spaces,” and Harper’s Weekly settled on reflections from distant icebergs.
Ars Technica has collected historical documents recording the contemporary responses, including the above painting by Frederic Edwin Church, possibly a portrayal of the aurora. Click through to check it out.
Otra gran frase!
The Cycle of Stars — The End
(Source: ikenbot, via anglicalia)