Since the article is low on details about Euclid [0]:
> The objective of the Euclid mission is to better understand dark energy and dark matter by accurately measuring the accelerating expansion of the universe.
> Euclid will [...] measure the redshift of galaxies out to a value of 2, which is equivalent to seeing back 10 billion years into the past.
> During its nominal mission, which will last at least six years, Euclid will observe about 15,000 deg2 (4.6 sr), about a third of the sky, focusing on the extragalactic sky (the sky facing away from the Milky Way).
> About 10 billion astronomical sources will be observed by Euclid, of which one billion will be used for weak lensing (to have their gravitational shear measured) with a precision 50 times more accurate than is possible today using ground-based telescopes.
> After Russia withdrew in 2022 from the Soyuz-planned launch of Euclid, the ESA reassigned it to a SpaceX Falcon 9 launch vehicle, which launched on 1 July 2023.
> In total, nine Science Data Centres spread over countries of the Euclid Consortium will process more than 170 petabytes of raw input images over at least 6 years
> The telecommunications system is capable of transferring 850 gigabits per day. It uses the Ka band and CCSDS File Delivery Protocol to send scientific data at a rate of 55 megabits per second during the allocated period of 4 hours per day to the 35 m dish Cebreros ground station in Spain, when the telescope is above the horizon. Euclid has an onboard storage capacity of at least 300 GB.
> The telecommunications system is capable of transferring 850 gigabits per day. It uses the Ka band and CCSDS File Delivery Protocol to send scientific data at a rate of 55 megabits per second during the allocated period of 4 hours per day to the 35 m dish Cebreros ground station in Spain, when the telescope is above the horizon.
To put this feat in perspective: it can be a pretty difficult job to install working WiFi in a warehouse a few hundred meters on a side. And the transfer rate at that distance is really mind boggling.
> The objective of the Euclid mission is to better understand dark energy and dark matter by accurately measuring the accelerating expansion of the universe.
> Euclid will [...] measure the redshift of galaxies out to a value of 2, which is equivalent to seeing back 10 billion years into the past.
> During its nominal mission, which will last at least six years, Euclid will observe about 15,000 deg2 (4.6 sr), about a third of the sky, focusing on the extragalactic sky (the sky facing away from the Milky Way).
> About 10 billion astronomical sources will be observed by Euclid, of which one billion will be used for weak lensing (to have their gravitational shear measured) with a precision 50 times more accurate than is possible today using ground-based telescopes.
> After Russia withdrew in 2022 from the Soyuz-planned launch of Euclid, the ESA reassigned it to a SpaceX Falcon 9 launch vehicle, which launched on 1 July 2023.
> In total, nine Science Data Centres spread over countries of the Euclid Consortium will process more than 170 petabytes of raw input images over at least 6 years
> The telecommunications system is capable of transferring 850 gigabits per day. It uses the Ka band and CCSDS File Delivery Protocol to send scientific data at a rate of 55 megabits per second during the allocated period of 4 hours per day to the 35 m dish Cebreros ground station in Spain, when the telescope is above the horizon. Euclid has an onboard storage capacity of at least 300 GB.
[0]: https://en.wikipedia.org/wiki/Euclid_%28spacecraft