Comments by "Peter Lund" (@peterfireflylund) on "South China Morning Post" channel.

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  3. The whole world did -- and then forgot it again because it happened so long ago and it really isn't anything special anymore. The US has had massive radio antennas like this for 50+ years. The same with the Soviet Union (then)/Russia (now). The same with ESA. There are even commercial networks like this you can buy time on. Which brings me to the next point: China needs more than just a bunch of these antennas in Northern China. The problem is that the Earth rotates... So they really need at least three groups of big antennas spread around the globe. The US has that. Russia has that. ESA has that. Several commercial companies have that. They were used for the Apollo missions, for the Soviet robotic missions to the moon, for the missions to Mars and Venus, for the Voyager probes, for New Horizons (the probe that flew by Pluto in 2015), for the many asteroid and comet missions from the US, Europe, and Japan, etc, etc... NASA/ESA/ROSCOSMOS (Russia/ISRO (India) currently have active observation satellites in orbit around Mars -- how do you think they communicate with them? So: they aren't really anything special. Everybody else already have them. China doesn't have enough to be self-reliant. China could just have bought antenna time commercially or they could ask NASA/ESA/Russia nicely about borrowing their antennas -- which they will have to do anyway. Full networks (NASA/ESA/Russia): https://en.wikipedia.org/wiki/NASA_Deep_Space_Network https://en.wikipedia.org/wiki/ESTRACK https://en.wikipedia.org/wiki/Soviet_Deep_Space_Network Small networks, basically a single station each + borrowed/rented stations (India, Japan, China): https://en.wikipedia.org/wiki/Indian_Deep_Space_Network https://en.wikipedia.org/wiki/ISRO_Telemetry,_Tracking_and_Command_Network https://en.wikipedia.org/wiki/Usuda_Deep_Space_Center https://en.wikipedia.org/wiki/Chinese_Deep_Space_Network Satellites around Mars: https://en.wikipedia.org/wiki/List_of_Mars_orbiters
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