Monday, March 29, 2010
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Sunday, March 28, 2010
Wednesday, March 24, 2010
A Burst of Spring
Spring has sprung on Mars, bringing with it the disappearance of carbon dioxide ice (dry ice) that covers the north polar sand dunes. In spring, the sublimation of the ice (going directly from ice to gas) causes a host of uniquely Martian phenomena. In this image streaks of dark basaltic sand have been carried from below the ice layer to form fan-shaped deposits on top of the seasonal ice. The similarity in the directions of the fans suggests that they formed at the same time, when the wind direction and speed was the same. They often form along the boundary between the dune and the surface below.
Image Credit: NASA/JPL-Caltech/University of Arizona
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Tuesday, March 23, 2010
The mobile leak detector was placed inside a small aircraft and flown over the Turrialba volcano to gauge the air around the volcano. In this photo, the sampling device is attached to the wing strut and positioned so it doesn't pick up exhaust gases. Photo courtesy of Tim Griffin› View Hi-Res Image
Tim Griffin works with the mobile leak detector in the back seat of a Costa Rican airplane before a sampling fllight. The shuttle leak detection system used at the launch pads is the size of three refrigerators, but Griffin's team reduced it in size and added automation so it could be mobile.Photo courtesy of Tim Griffin. › View Hi-Res Image
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NASA's Operation IceBridge mission will make science flights from Kangerlussuaq and Thule, Greenland, in spring 2010 to survey the area's ice sheet, outlet glaciers and sea ice. Credit: NASA
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Monday, March 22, 2010
Russian cosmonaut Oleg Kotov (center), Expedition 22 flight engineer and Expedition 23 commander; NASA astronaut T.J. Creamer (left) and Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi, both Expedition 22/23 flight engineers, pose for a photo in the International Space Station's Kibo laboratory. Credit: NASAUpon completion of assembly later this year, the station’s crew and its U.S., European, Japanese and Russian laboratory facilities will expand the pace of space-based research to unprecedented levels. Nearly 150 experiments are currently under way on the station, and more than 400 experiments have been conducted since research began nine years ago. These experiments already are leading to advances in the fight against food poisoning, new methods for delivering medicine to cancer cells and the development of more capable engines and materials for use on Earth and in space. The international partner agencies provide crew members, control centers and support teams that train and provide uninterrupted support for systems operations and coordinate the on-orbit research. The station has a mass of almost 800,000 pounds and a habitable volume of more than 12,000 cubic feet – approximately the size of a five-bedroom home, and uses state-of-the-art systems to generate solar electricity, recycle nearly 85 percent of its water and generate much of its own oxygen supply. Nearly 190 humans have visited the space station, which is now supporting its 23rd resident crew. Boeing, prime contractor, responsible for design, development, construction and integration of the ISS, recently handed over the “keys” to the station’s U.S. On-Orbit Segment to NASA at the conclusion of an Acceptance Review Board that verified the delivery, assembly, integration and activation of all hardware and software required by contract.
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Sunday, March 21, 2010
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Thursday, March 18, 2010
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This image of Mars' moon Phobos was taken by the High Resolution Stereo Camera (HRSC) on Mars Express. The HRSC camera is operated by the German Aerospace...
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Wednesday, March 17, 2010
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This image of the open star cluster NGC 7380, also known as the Wizard Nebula, is a mosaic of images from the WISE mission spanning an area on the sky...
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Tuesday, March 16, 2010
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Image above: Expedition 22 Flight Engineer Soichi Noguchi performs maintenance on the cooling loops in the U.S. spacesuits housed in the International Space Station’s Quest airlock. Credit: NASA TV
Soaring high over the Earth in the International Space Station, the astronauts and cosmonauts of the Expedition 22 crew began a new week Monday, the final week in space for two of their number. Commander Jeff Williams and Flight Engineer Maxim Suraev will depart the station Thursday aboard the Soyuz TMA-16 spacecraft. They will undock from the orbiting complex and take a three-and-a-half-hour ride that will culminate in a parachute-assisted landing on the steppe of Kazakhstan early that morning. Williams and Suraev began their final week in orbit by testing the Soyuz spacecraft’s motion control system and recharging the satellite telephone they will carry with them in the unlikely event that they land off course in the barren landing region and need to contact search and recovery forces. They also spent three hours going over procedures for their homeward flight with specialists on the ground. As members of the Expedition 21 and 22 crews, Williams and Suraev will have spent 169 days in space. Including his time on the Expedition 13 and STS-101 crews, this will give Williams a total of 362 days in space, placing him fourth on the all-time U.S. list of space travelers behind Peggy Whitson with 377 days, Mike Foale with 374 and Mike Fincke with 366. Williams will be 26th on the all-time endurance list for all space travelers. Expedition 22 Flight Engineers Soichi Noguchi, T.J. Creamer and Oleg Kotov will continue their stay on the station becoming the new Expedition 23 crew. Kotov will become the new station commander when the departing Williams enters the Soyuz vehicle and closes the hatch. On April 4, Expedition 23 will expand to a six-member crew. Arriving in the Soyuz TMA-18 spacecraft will be new station crew members Alexander Skvortsov, Tracy Caldwell Dyson and Mikhail Kornienko. On April 7, space shuttle Discovery is scheduled to arrive for a thirteen day mission to supply the station with new science racks and ammonia tanks. STS-131 will feature three spacewalks and the delivery of the Leonardo Multi-Purpose Logistics Module. In preparation for the joint spacewalks to be performed during STS-131, Creamer and Noguchi packed up equipment for Discovery to return to Earth and Noguchi performed maintenance on the cooling loops in the U.S. spacesuits housed in the station’s Quest airlock. Controllers on the ground operated Canadarm2, the station’s robotic arm, to remove the Special Purpose Dextrous Manipulator, known as Dextre, from the Mobile Base System (MBS) on the complex’s truss structure. Tuesday they will move it to the outside of the Destiny laboratory in order to make the MBS available for use during STS-131.
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ABOUT AMATEUR RADIO
AMATEUR RADIO OPERATOR'S CERTIFICATE
Regulation 15(2) of the regulation denotes that a person who contravenes this regulation commits an offence and shall, on conviction, be liable to a fine not exceeding three hundred thousand ringgit (RM 300,000.00) or to imprisonment for a term of not exceeding three years or to both.
To eliminate the potential of interferences, the following procedures must be followed strictly:-
a) Ensure that suffient equipment, tools and test gear is available and can used to monitor and verify that your transmission does not cause any interference to other radio services.
b) You must responsible if your amateur radio is found to be the caused of interference. Immediate remedy action must be taken to rectify the problems in case of interference.
c) Ensure that the transmission do not exceed the level of over deviation.
d) Ensure that the radiated energy is always within the narrowest posible frequency bands for any class of emission in use.
e) The radiation of harmonics and spurious emissions should be suppressed to minimize interference.