ROSETA PROBE :CLOSE ENCOUNTERS
Emulating and overcoming long voyages of interplanetary Russian and American probes (Vega, Galileo, Voyager), the european agency ESA today proudly displays its flag technological tool space : the Rosetta probe, launched in 2004, from French Guyana. The probe, a real bird steering wheel (2 solar panels extended, 32 m long each), has several purposes. The first has already been drawn (orbit Earth and Mars, to be propelled). The second: filming and photographing very near 2 asteroids (Steins and Lutetia). Last week, the Roseta’scanner, took very close photos of asteroid Steins, located in the first asteroid belt (Mars-Jupiter). After that, it will fly to the periphery of our solar system -where the 2014- after 3 years of persecution of the comet 67P Churyumov-Gerasimenko, will attempt to pose on it a spaceship (Phylae) on its surface and then hill continue its journey towards the sun, where will attempt to study the remnants of the early stages of the formation of our solar system.
These days, however, the subject are asteroids, estimated at 3 million and more distributed in our solar system in 2 belts: one internal (Mars/Jupiter) and another outside, beyond Neptune (Kuiper belt). The asteroid that cause most concern are the giants (200 km or more), of which at least 2, would have caused major extinctions on our planet. The mid-sized and small, are mostly destroyed in the atmosphere. The possibility that a giant asteroid could destroy our planet, has prometed to a significant number of scientists the need to destroy them with nuclear missiles. One debatable option, because such action would end by pouring thousands of radioactive fragments on our planet, causing pollution. Really, the possibility of destroying our planet by an asteroid giant, is quite remote. Just look at the past history of all the planets in our solar system. The worst thing that could happen is the detachment of a cap of the planet that could end up doing as an added satellite or perhaps modify its planetary axis of rotation (like Uranus). The most logical option to be taken on giant asteroid is deviating its trajectory, while as already demonstrated, because it's easy to land over and manipulate them. But all is not danger, as some asteroids may retransmit interplanetary information, carrying telescopes, serve as lighthouses, space bus, transporting material, be areas of temporary shelter or fertile ground to sow organic material.
These days, however, the subject are asteroids, estimated at 3 million and more distributed in our solar system in 2 belts: one internal (Mars/Jupiter) and another outside, beyond Neptune (Kuiper belt). The asteroid that cause most concern are the giants (200 km or more), of which at least 2, would have caused major extinctions on our planet. The mid-sized and small, are mostly destroyed in the atmosphere. The possibility that a giant asteroid could destroy our planet, has prometed to a significant number of scientists the need to destroy them with nuclear missiles. One debatable option, because such action would end by pouring thousands of radioactive fragments on our planet, causing pollution. Really, the possibility of destroying our planet by an asteroid giant, is quite remote. Just look at the past history of all the planets in our solar system. The worst thing that could happen is the detachment of a cap of the planet that could end up doing as an added satellite or perhaps modify its planetary axis of rotation (like Uranus). The most logical option to be taken on giant asteroid is deviating its trajectory, while as already demonstrated, because it's easy to land over and manipulate them. But all is not danger, as some asteroids may retransmit interplanetary information, carrying telescopes, serve as lighthouses, space bus, transporting material, be areas of temporary shelter or fertile ground to sow organic material.
SONDA ROSETA: ENCUENTROS CERCANOS.
Emulando y superando las largas travesias interplanetarias de las sondas rusas y americanas (Vega, Galileo, Voyager), la ESA europea exhibe hoy con orgullo su instrumento tecnológico bandera en el área espacial : la sonda Roseta lanzada el 2004, desde la Guyana francesa. La sonda, una verdadera ave volante (2 paneles solares extendidos, de 32 m de largo cada uno), tiene varios propósitos . El primero, ya ha sido sorteado (orbitar la Tierra y Marte, para impulsarse). La segunda : filmar y fotografiar de cerca 2 asteroides (Steins y Lutetia). La semana pasada el scanner de Roseta, tomó fotos muy cercanas del asteroide Steins, ubicado en el maremágnum del primer cinturón de asteroides (Marte-Júpiter). Tras ello, enrumbará a la periferia del sistema solar donde -el 2014- trás 3 años de persecución del cometa 67P Churyumov-Gerasimenko, intentará posar una nave (Phylae), en su superficie para luego continuar su viaje en dirección al sol, donde estudiará los remanentes de las fases tempranas de la formación de nuestro sistema solar.
En estos días, no obstante, el tema son los asteroides, calculados en 3 y más millones, distribuidos en nuestro sistema solar en 2 cinturones : uno interno (Marte/Júpiter) y otro externo, mas allá de Neptuno (C. de Kuiper). Los asteroides que más preocupan son los gigantes (200 km o más), de los que por lo menos 2, habrían ocasionado grandes extinciones en nuestro planeta. Los de tamaño mediano y pequeño, son mayormente destruidos en la atmósfera. La posibilidad de que un asteroide gigante, pueda destruir nuestro planeta, ha condicionado que un número importante de científicos sienta la necesidad de destruirlos con misiles atómicos. Una opción debatible, porque tal acción terminaría vertiendo miles de fragmentos radioactivos sobre nuestro planeta, contaminándolo. En última instancia, la posibilidad de destrucción de nuestro planeta por un asteroide gigante, es bastante alejada. Basta mirar la historia pasada de todos los planetas de nuestro sistema solar. Lo peor que podría suceder es el desprendimiento de un casquete planetario el mismo que, podría terminar haciendo las veces de satélite añadido o tal vez modificar su eje de rotación planetario (como Urano). La opción mas lógica a adoptar frente a asteroides gigantes es desviarlos de sus trayectorias, en tanto como ya se ha demostrado, es fácil posarse sobre ellos y manipularlos. Empero, todo no es peligro, ya que algunos asteroides podrian retrasmitir información interplanetaria, portar telescopios, hacer las veces de faros o, de buses espaciales, transportando material, ser áreas de refugio temporal o fértil terreno para sembrar material orgánico.
Labels: asteroids, Roseta probe
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