James Webb telescope captures the universe with just a 68GB SSD

James Webb telescope captures the universe with just a 68GB SSD

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If you tell someone to buy a SSD of 64GB for the PC these days, they will directly take you for crazy, since today there is little space for all the uses that can be given to both a PC and a smartphone. Well, it seems that the most advanced space telescope in the world, james webbdoes its job with an SSD of only 68GB capacity. This telescope has been the last feat of the POT and has shown us the best and most complex images of the universe, thus surpassing the Hubble telescope.

Less than a week ago, NASA and the President of the United States, Joe Biden, showed the first image captured by the James Webb telescope. This was totally done viral, since it showed us a part of the universe as we had never seen it. In fact, they even looked undiscovered galaxies. All this thanks to the camera NIRCam near infrared and gravitational lens that allowed to show a zone of the universe much more distant. However, what we did not know is that to store and transmit these images it uses of an SSD.

NASA chose a 68 GB “special SSD” as the best option

We are talking about a special telescope that has cost $10 billion and they only put a 68 GB storage unit. It sounds crazy, but NASA decided that an SSD was the best option for the James Webb, although this is not like the consumer ones. First of all, this telescope is located at a distance of a million kilometers from Earthvery much further away that telescopes like the Hubble.

This area is constantly bombarded with radiation at levels that another SSD could not have endured and, in addition, it is capable of operating at a temperature of -370°Fnamely, -223°C. Just think about the process certification that said SSD must have passed, already makes us see the degree of pampering that James Webb receives. Even so, do not expect very fast speeds, since both due to the distance and the conditions where it is located, it is already an achievement that works.

That said, it is capable of transmitting the data to Earth at a speed of 28Mbps through a connection in Ka band at 25.9 GHz which works through Deep Space Network.

The choice of 68 GB for the James Webb was calculated

James Webb Universe Telescope SSD Data Transfer

As we can imagine, with a capacity that is even less than the storage of many current smartphones, the James Webb’s SSD can easily fill up. However, everything is calculated, since in one day, the James Webb telescope collects 57 GB of data (compared to 1 or 2 GB collected by Hubble) Y transfers them to the earth. This occurs in two intervals of time of 4 hours each, where they are transferred 28.6GB of data every time.

In total, the time it takes to transfer the 57 GB of data is approximately 4.5 hours. Therefore, we can conclude that the James Webb’s SSD is sufficient, since the data is transferred and the storage is constantly being emptied. Having said that, the images we saw were not “saved” in the telescope itself, but transferred a few hours later.

Now we all know that SSDs suffer from degradation over time and this record, despite being different, is not exempt from this condition. With a useful life of the James Webb Telescope 10 yearsyour SSD during these, seeing its capacity shrink to just 60GB in the end. Now, we must add that a 3% of the capacity of this It reserves for storage of engineering data and telemetry. Therefore, this is the reason for its 68 GB, which are 11GB more of what you need, to be able to get away with a small margin of free space.

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