Big Data, But Not as we Know It
As astronomy equipment becomes ever more complex and harvests ever increasing amounts of information from our skies, companies are applying the theories of big data to try and answer one of humanity’s most profound questions – are we alone?
The amount of data collected is mind-boggling. Take the example of the Square Kilometre Array Project (SKA) – a $2 billion joint radio telescope development between Australia, South Africa and the UK. Upon the launch of Phase One in 2020 the project will collect a staggering 915 Petabytes of data per day (approximately 960 million Gigabytes) – that’s nearly 2 million years’ worth of playback on a standard MP3 Player. By the time the operation is fully functional in 2025 the SKA’s will produce ten times the global internet traffic of the entire of 2013.
(Image source: http://www.skatelescope.org )
While the search for alien life is not the project’s primary purpose, if life does exist the dishes have a good chance of finding it. The SKA’s telescopes will be so powerful and sensitive that the scientists involved predict that it will be capable of detecting an airport radar signal on an airport 100 light-years away.
Processing and Managing
Naturally, making sense of all this data requires some serious computing power, and the SKA central supercomputer doesn’t disappoint – possessing the processing power of 100 million high-spec PCs and able to perform an ExaFLOP (1018 million trillion) of operations per second.
Storing and archiving this data also requires some creative solutions. NASA’s Jet Propulsion Laboratory (JPL) is already working on developing open-source software that uses innovative cloud computing techniques to organise, manage and catalogue the huge amounts of daily data.
All this alien chasing also has real-world benefits. Today’s computers are still limited to PetaFLOPs which means the SKA’s computational technology will be applicable to large-scale computing everywhere, and the JPL team hope the complex data management tools they develop will help businesses archive and access their data with more ease.
Back on Earth
The vast amount of data collected has offered exciting opportunities to companies back on earth. A good example is Skytree, a 20-employee start-up in San Jose specialising in developing machine learning through the use of big data. The company has recently partnered with the SETI Institute and hopes to use complex algorithms to sift through the massive volumes of data to find patterns, relationships, anomalies and outliers. The techniques allow the Institute to look for signs of extra-terrestrial life in data that was previously discarded due to its size – indeed it’s possible that evidence of an extra-terrestrial life is already hiding in their archives.
It’s not just tech companies and scientific researchers who have access to the big data that’s been collected. SETI Live allows enthusiasts to use their own PCs to access live radio frequency signals SETI Institute’s Allen Telescope Array (ATA) – giving them the tools to identify and report any suspicious patterns that could be indicative of alien life.
Whether or not we will ever find extra-terrestrial is naturally debatable, but one thing is certain – if we do detect that life exists then big data will have played a massive part in the discovery.
What do you think? Is this a useful deployment of big data, or could the money and manpower be better spent elsewhere? Let us know in the comments below.
By Daniel Price
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