Showing posts with label Space and Earth. Show all posts
Showing posts with label Space and Earth. Show all posts

Chandrayaan-1 Indian space journey

Chandrayaan-1 Indian space journey

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Today India is surging ahead to bolster its image as a powerhouse of advanced Space technology. It is all the more surprising that it was only in the late 1960s that India embarked on its Space Programme on a rather modest scale by establishing the Indian Space Research Organisation (ISRO). It was instrumental in staging the first of its low capability projects in the initial stages.

Earlier experiments and investments opened up opportunities for testing the Satellite Launch Vehicle (SLV-3), which proved successful. From then on India began to advance by leaps and bounds. It soon started testing a range of SLVs which followed the Augmented Satellite Launch Vehicle (ASLVs), the Polar Satellite Launch Vehicle (PSLV) and the more powerful Geosynchronous Satellite Launch Vehicle (GSLV). The modernisation of such duel use technologies enhanced Indian capabilities in space and profoundly influenced the South Asian strategic balance. From the 1980s, India jumped into Ballistic Missile superiority by developing its Integrated Guided Missile Programme (IGMDP), which followed the Satellite programme, anti-tank, surface to air, Prithvi and Agni Missiles.

The success of these developments allowed India to achieve rapid superiority in its advanced Satellite Programme. Building upon the success of the Aryabhatta, Bhaskara and Rohini satellites, India started to build high capability satellites, notably the Indian National Satellite (INSAT). The dual purpose INSAT system at present has ten satellites in operation: INSAT-2E, INSAT-3A, INSAT-3B, INSAT-3C, INSAT-3E, KALPANA-1, GSAT-2 and EDUSAT, INSAT-4A and INSAT-4B. The dual purpose GSLV launches INSAT satellites. The INSAT system is a joint venture by the Department of Space (DOS), Department of Telecommunications (DOT), India Meteorological Department (IMD), All India Radio (AIR) and Doordarshan, the public television broadcaster in India. It is undeniably one of the largest domestic communication satellite systems in the Asia Pacific Region.

The year 2007 has proved to be another significant milestone for the Indian Space Programme. It has brought a significant lead for India, which launched the PLSV-C7 and PSLV-C8 on 10 January and 23 April 2007 respectively. The PSLV-C7 established the Indian capability to launch satellites and bring them back to earth successfully. This venture introduced a new era in launch vehicle and satellite technology development which was an undoubted success and an essential step towards Indian manned space flight. It enhanced Indian capabilities to its global satellite launch business. India has joined the elite club of nations by deploying space exploration resources for commercial use. The PSLV-C8 carried an Italian satellite (AGILE) into a low earth orbit. The GSLV-F04 was launched successfully on 2 September 2007 carrying INSAT-4CR into the desired orbit. It is the largest satellite launched by an Indian launcher so far. The launch of GSLV Mk III is already scheduled for 2008-9. An Israeli military intelligence satellite, TechSAR, will be sent into orbit by an Indian rocket, the PSLV, in coming months: after this India could boost its intelligence gathering capability extensively. Above all, India is going to launch its first unmanned lunar mission Chandrayaan-I in April 2008, and Chandrayaan-II in 2011-12. In these developments India received help from the US, Russia, Israel and Europe.

Since the Indian Space Research Organisation (ISRO) started funding high-energy astronomy involving underground, balloon and rocket based observations in 1962, and the successful launch of the Indian X-ray Astronomy Experiment satellite in 1996, the space programme has evolved with two recent developments:

" The approved development of the multi-wave length astronomical satellite ASTROSAT and,

" Indias first unmanned spacecraft The Chandrayan-I, literally translated as first journey to the moon, which will be sent to the Moon in 2007.

The talk will discuss Indias high-energy astronomy experiments and space programme, including parallel developments in space technology and capabilities, satellites and launchers, and primarily drivers.

China to test space weapon

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China announced plans to launch the next manned space mission somewhere between September 25 and September 30, the Xinhua news agency reported at the end of last week. According to a spokesperson for the Chinese space agency, the crew is prepared for the mission, and one of the astronauts will even conduct a spacewalk.

Shenzhou-7 will be launched from the Jiuquan Satellite Launch Center in northwestern Gansu Province, and will be the first Chinese mission to perform a spacewalk. “All the major systems involved in the launching are now in the final preparation,” the spokesperson said.

“The main tests for the spacecraft, the Long-March II-F rocket, suits for the spacewalk and a satellite accompanying the fly have also been finished,” he also added, the Xinhua news agency informs.

The Shenzhou-7 spacecraft will have 3 people aboard, one of which will conduct the spacewalk. In addition to that, the Chinese space agency chose other three astronauts as substitutes.

The latest reports on the Chinese space mission seem to be more credible than previous ones. Shenzhou-7 was expected to be launched in October 2008, but new rumors revealed a new launch window, between September 17 and October 1.

Chinese sources see Yang Liwei as one of the possible candidates for the mission, although there is no official confirmation of that. In addition to that, it appears that China is sure of its success, or at least that is the first idea coming to one’s mind after listening to rumors that commemorative posts and stamps have already been printed.

China launched the first Shenzhou manned mission in October 2003, after several unmanned flights had been performed. Shenzhou-6 was China’s second manned flight, and was launched on October 2005.

Eclipse

Eclipse enthusiasts rejoice in August





The March 29, 2006 eclipse seen from Accra, Ghana.
Olivier Asselin / AP



In Friday, August 1 the sun will be partially eclipsed over an immense area that includes western and central Asia, parts of northern and central Europe, all of Greenland and even a small slice of northeastern North America.

A total solar eclipse — the first in nearly two and a half years — will be visible along a narrow track that will start over the Northwest Passage of Canada, gives a glancing blow to northern Greenland, then shifts southeast through Siberia and western Mongolia and before ending near the famed Silk Route of China.

The path of totality for this upcoming eclipse is never more than 157 miles (252 km) wide.

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