Wednesday, 3 December 2008

CHANDRAYAAN-1: India's first mission to Moon



"THE MOON"with the history of the early solar system etched on it beckons mankind from time immemorial to admire its marvels and discover its secrets. Understanding the moon provides a pathway to unravel the early evolution of the solar system and that of the planet earth.

Through the ages, the Moon, our closest celestial body has aroused curiosity in our mind much more than any other objects in the sky. This led to scientific study of the Moon, driven by human desire and quest for knowledge. This is also reflected in the ancient verse.
Exploration of the moon got a boost with the advent of the space age and the decades of sixties and seventies saw a myriad of successful unmanned and manned missions to moon. This was followed by a hiatus of about one and a half-decade. During this period we refined our knowledge about the origin and evolution of the moon and its place as a link to understand the early history of the Solar System and of the earth.
However, new questions about lunar evolution also emerged and new possibilities of using the moon as a platform for further exploration of the solar system and beyond were formulated. Moon again became the prime target for exploration and a new renaissance of rejuvenated interest dawned. All the major space faring nations of the world started planning missions to explore the moon and also to utilize moon as a potential base for space exploration.
The idea of undertaking an Indian scientific mission to Moon was initially mooted in a meeting of the Indian Academy of Sciences in 1999 that was followed up by discussions in the Astronautical Society of India in 2000. Based on the recommendations made by the learned members of these forums, a National Lunar Mission Task Force was constituted by the Indian Space Research Organisation (ISRO). Leading Indian scientists and technologists participated in the deliberations of the Task Force that provided an assessment on the feasibility of an Indian Mission to the Moon as well as dwelt on the focus of such a mission and its possible configuration.
The task force recommended that given the technical expertise of ISRO it will be extreme worthwhile to plan an Indian Mission to the Moon. It also provided specific inputs such as the primary scientific objectives of such a mission, plausible instruments to meet these objectives, launch and spacecraft technologies that need to be developed and suggested the need for setting up of a Deep Space Network (DSN) station in India for communication with the lunar orbiting spacecraft. The team also provided a provisional budgetary estimate.
The Study Report of the Task Team was discussed in April 2003 by a peer group of about 100 eminent Indian scientists representing various fields of planetary & space sciences, earth sciences, physics, chemistry, astronomy, astrophysics and engineering and communication sciences. After detailed discussions, it was unanimously recommended that India should undertake the Mission to Moon, particularly in view of the renowned international interest on moon with several exciting missions planned for the new millennium. In addition, such a mission will provide the needed thrust to basic science and engineering research in the country including new challenges to ISRO to go beyond the Geostationary orbit. Further, such a project will also help bringing in young talents to the arena of fundamental research. The Academia, in particular, the university scientists would also find participation in such a project intellectually rewarding.
Subsequently, Government of India approved ISRO's proposal for the first Indian Moon Mission, called Chandrayaan-1 in November 2003.

STS-119 Dream Come True Mission



STS-119, Discovery: Final Space Shuttle ISS Solar Array Delivery Mission - Update.
October 30th, 2008


Attired in training versions of their shuttle launch and entry suits, these seven astronauts take a break from training to pose for the STS-119 crew portrait. From the right (front row) are NASA astronauts Lee Archambault, commander, and Tony Antonelli, pilot. From the left (back row) are NASA astronauts Joseph Acaba, John Phillips, Steve Swanson, Richard Arnold and Japan Aerospace Exploration Agency astronaut Koichi Wakata, all mission specialists. Wakata is scheduled to join Expedition 18 as flight engineer after launching to the International Space Station on STS-119. Credit: NASA


09/26/08: Space shuttle main engine No. 3 (bottom left) is ready to be installed in space shuttle Discovery in Orbiter Processing Facility bay 3 at NASA’s Kennedy Space Center in Florida. Each engine is 14 feet long, weighs about 6,700 pounds, and is 7.5 feet in diameter at the end of the nozzle. Discovery is being processed for its next mission, STS-119, targeted for launch on Feb. 12, 2009. Discovery and its crew will deliver integrated truss structure 6 (S6) and solar arrays to the International Space Station. Photo credit: NASA/Dimitri Gerondidakis


09/26/08: In Orbiter Processing Facility bay 3 at NASA’s Kennedy Space Center in Florida, space shuttle main engine No. 3 has been installed in space shuttle Discovery. Each engine is 14 feet long, weighs about 6,700 pounds, and is 7.5 feet in diameter at the end of the nozzle. Discovery is being processed for its next mission, STS-119, targeted for launch on Feb. 12, 2009. Discovery and its crew will deliver integrated truss structure 6 (S6) and solar arrays to the International Space Station. Photo credit: NASA/Dimitri Gerondidakis


09/25/08: In Orbiter Processing Facility bay 3 at NASA’s Kennedy Space Center in Florida, a Hyster forklift (upper left) is used to raise space shuttle main engine No. 1 for installation in space shuttle Discovery. Each engine is 14 feet long, weighs about 6,700 pounds, and is 7.5 feet in diameter at the end of the nozzle. Discovery is being processed for its next mission, STS-119, targeted for launch on Feb. 12, 2009. Discovery and its crew will deliver integrated truss structure 6 (S6) and solar arrays to the International Space Station. Photo credit: NASA/Dimitri Gerondidakis


05/20/08: Astronauts Joseph M. Acaba and Steven R. Swanson (almost totally obscured), both STS-119 mission specialists, are about to be submerged in the waters of the Neutral Buoyancy Laboratory (NBL) near NASA’s Johnson Space Center. Acaba and Swanson are attired in training versions of their Extravehicular Mobility Unit (EMU) spacesuits. Divers are in the water to assist the crewmembers in their rehearsal, intended to help prepare them for work on the exterior of the International Space Station. Credit: NASA

- courtesy of NASA