ESA’s Mars Express spacecraft is progressing further every day on its journey to the Red Planet. Everything is set for arrival at Mars on the night of 25 December 2003, after a journey of about 400 million kilometres. In the weeks since its launch, engineers have started to thoroughly test the spacecraft and its equipment.
This testing phase is standard for all spacecraft on the way to their destination. Known as commissioning, it began 3 weeks after the launch. During this time, ground controllers sent signals to each of the orbiters seven instruments to switch them on and verify their health status.
As well as commissioning the instruments, the ground controllers also tested each of the spacecraft’s subsystems. There was a thrilling moment when one of the on-board computer memory units, known as the Solid State Mass Memory (SSMM), seemed to not respond properly during the instruments check-out. Good progress has been made on this issue in the last few days: a test involving all instruments was completed successfully by recording and recovering the data through the SSMM.
Rudi Schmidt | alfa
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Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
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'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
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