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Showing posts from March, 2016

EXOMARS, Trace Gas Orbiter & Schiaparelli

The objectives of ExoMars mission is to look for life beyond earth (exo-biology) and it is performed by sending an orbiter (Trace Gas Orbiter, TGO) and Lander (Schiaparelli) which is already on its way to the Red planet and preparing for a rover in the next available celestial window in 2018. It is a joint venture between ESA and Russian space agency Roscosmos. Instead of giving a routine information on this mission, I try to bring out the niche technologies utilized by the participating European countries in TGO, which are at the forefront of Planetary Exploration. Special emphasis is made to bring out those attractive aspects of the "suite of instruments" which are employed to hunt down the elusive secrets (methane) on Mars.

Trace Gas Orbiter, as the name suggests is geared to look for trace gases, these are defined as the species which fall in "less than 1% composition" of a planet. Since the signature of life could be buried with methane, a trace gas, concentra…

India need Nano satellites; Future of Space Sciences

Sputnik 1 was the first human endeavour to leave mother earth (October, 1957) to be able to wander into Space. Though it was a small satellite ( ~ 83 kg), the later attempts by humans to explore space (Low Earth Orbit, LEO) were becoming increasingly bulky. The exploitation of geo-synchronous orbit (36,000 km) for beaming telecommunication and other signals could only add more burden on building huge work horses (Envisat ~ 8,000 kg). The present discussion is limited to Nano-Satellites, which fall in the 1-10 kg weight category; while Micro- satellites are in 100-10 kg and Pico satellites under 1-kg.

As the miniaturisation in electronic components (MEMS) started, so was the aerospace industry turning to COTS (Commercial, Off-the-Shelf) based small satellites. The idea was to try out newer technology riding on tiny satellites (Micro / Nano) even if the sub-components are not of very expensive MIL (military) grade, meaning radiation hardened class.  In came a "golden standard"…