ESA will try to fetch data from China's Mars rover with a new method listening | Engadget
That means it can't hear the hail signal sent from the orbiter, which is typically what a rover waits for before it starts sending out data. During five tests, Zhurong will send a signal blindly into space, and the Mars Express will listen for that signal and any potential data. Specifically, China's selfie-taking Zhurong rover, which has been on the Red Planet since May, will try to shoot data over to the ESA's Mars Express Orbiter. "If [Mars Express] detects the magic signal, the radio will lock on to it and begin recording any data," ESA's Josh Tapley writes. As the ESA explains, Zhurong can't actually receive any communications from the Express Orbiter, due to a radio incompatibility. When the data arrive at ESOC, they will be forwarded on to the Zhurong team for processing and analysis." That'll be useful if China has any issues with its Tianwen-1 orbiter down the line, or if the US and other countries need help in turn.
Next month on Mars, the ESA and China's National Space Administration (CNSA) will try something that's never been attempted before in space: Sending data from a planet-based rover to an orbiter that … [+1449 chars]