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Saturday 20 September 2014

satellite of nasa

satellite of nasa

X-ray observations figure prominently in revealing the motion of the expanding debris, its chemical content, and its interaction with the interstellar environment, but supernova remnants fade out in X-ray light after 10,000 years.

Today’s system will become totally inadequate if, for example, commercial spaceflight becomes popular and affordable in the next 10 to 15 years. It won’t be just rich space tourists wanting to tweet from space — the craft themselves and all their support crews will need high-speed Internet to monitor things from the ground. The same goes for new satellites, new space stations and so on.

One thing NASA is looking into is the possibility of communicating using lasers instead of microwaves. This optical data link would be faster and more efficient by far. It might even open up the possibility of having a fast, reliable data connection with the moon — although Liebrecht and Schier said Mars and other planets are out of the question, at least for now.

Earth’s boundary layer extends upward from the land or ocean surface to roughly 2 kilometers (1 mile) in altitude, and it is the part of the atmosphere where interactions with the planet surface have the strongest effects. Patrick Minnis of NASA’s Langley Research Center explains that the clouds in this image likely formed underneath a strong inversion, in which air above the boundary layer was sinking. “The clouds in the northwest are below one kilometer in altitude,” Minnis noted, “while the remaining clouds, which are thicker and more developed, are between one and two kilometers.”

A recent major milestone to develop the next-generation of polar-orbiting satellites was reached when operational control of America’s newest environmental satellite was transitioned to the National Oceanic and Atmospheric Administration (NOAA).

Interoperability is also important. We all share one Internet here on Earth, based on HTTP and TCP/IP, so why not have similar standards in space? To this end, NASA is in constant communication with the Japanese, Russian and European space agencies, as well as research facilities and companies such as SpaceX, to collaborate and make plans for the next 20 years.

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