The European Space Agency will livestream an hour of Martian imagery from its orbiter, allowing us to see Mars like never before.
The Mars Webcam was originally designed for one task: monitor the separation of the Beagle 2 lander from the Mars Express spacecraft. After it delivered its initial set of data, the Mars Webcwas turned off. Around four years later, however, the camera was turned back on initially for outreach activities, but later repurposed as a science instrument on its own.
This is quite typical for most spacecraft since most data collection tends to take place when they are not in direct contact with a ground station antenna on Earth. The spacecraft could either be on the other side of Mars or the Sun, or their antennas could be facing away from Earth, according to ESA.That’s why whenever we see an image of a celestial body, it doesn’t really reflect what it looks like at this very moment.
During Friday’s one-hour livestream, however, we’ll be treated to images taken from Mars’ orbit just 18 minutes before they appear on our screens. That’s how long it takes the signal to travel from Mars to Earth, in addition to an extra minute for the data to go through wires and servers on the ground. ESA added a disclaimer in their announcement that this has never been done before, therefore the timing may be a bit off,“This is an old camera, originally planned for engineering purposes, at a distance of almost three million kilometers from Earth—
this hasn’t been tried before and to be honest, we’re not 100% certain it’ll work,” James Godfrey, spacecraft operations manager at ESA’s mission control centre in Darmstadt, Germany, said in the statement. “But I’m pretty optimistic.”
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